Research and analysis

Building Safety Remediation: monthly data release - November 2025 (Accessible Version)

Published 19 December 2025

Applies to England

Date of next publication: 9.30am on 29 January 2026

All figures in this release can also be found in an interactive dashboard.

Headlines

Overall remediation

As at the end of November 2025, there are 5,613 residential buildings 11 metres and over in height identified with unsafe cladding whose remediation progression is being reported on in this release, an increase of 43 since the end of October 2025. This is an estimated 65-98% of all buildings 11 metres and over in height expected to be remediated as part of MHCLG’s remediation programmes.

Since the department first began reporting on all five remediation programmes in October 2023, 1,816 more buildings with unsafe cladding are being reported on in this release.

Overall, 2,741 buildings (49%) have either started or completed remediation works. Of these, 1,938 buildings (35%) have completed remediation works.

Figure 1: 5,613 11m+ buildings have been identified with unsafe cladding, and there are an estimated 100-3,000 11m+ buildings expected to be remediated as part of MHCLG’s remediation programmes yet to identify.

Figure 2: Of the 5,613 buildings identified with unsafe cladding, 2,741 (49%) have started or completed remediation works, of which 1,938 (35%) have completed remediation works. This includes remediation progress on high rise (18m+) and mid-rise (11-18m) buildings in height.

Note: The total number of buildings identified with unsafe cladding, reported in the Overall Remediation section of the data release, does not sum to the total number of buildings in each remediation programme, reported in each respective section of the data release. This is due to some buildings appearing in more than one remediation programme.

ACM remediation – monthly update (as at end November 2025) since previous publication.

As at 30 November 2025 of the 513 high-rise (18 metres and over in height) residential and publicly owned buildings with ACM cladding systems, unlikely to meet Building Regulations, 498 (97%) have either started or completed remediation works, no change since the end of October.

Of these, 467 buildings (91%) have completed ACM remediation, including those awaiting building control sign-off, no change since the end of October.

There are 15 buildings yet to start ACM remediation (3% of all buildings), no change since the end of October. One building is vacant so does not pose a risk to resident safety, eight occupied buildings have forecast start dates, one building has had local authority enforcement action taken against it and the remaining five buildings have come into scope in 2025.

Building Safety Fund (BSF) – monthly update (as at end November 2025) since previous publication.

As at 30 November 2025, of the 705 high-rise (18 metres and over in height) residential buildings proceeding with an application for funding through the Building Safety Fund, 102 buildings (14%) have started remediation works and 448 buildings (64%) have completed remediation on unsafe non-ACM cladding, including those awaiting building control sign-off.

Overall, 550 high-rise buildings (78%) in the BSF have either started or completed remediation works on non-ACM cladding, a decrease of one since the end of October. Further detail is available in the Building Safety Fund section of the data release. Of these 550 buildings, 448 buildings (64% of buildings) have completed remediation works, an increase of four since the end of October.

Cladding Safety Scheme (CSS) – monthly update (as at end November 2025) since previous publication.

As at 30 November 2025, 935 buildings 11 metres and over in height have been assessed as eligible for the Cladding Safety Scheme (including 228 buildings that have transferred from the BSF), an increase of 23 since the end of October. Of these, 190 buildings (20%) have either started or completed remediation works, an increase of 10 since the end of October. Of these, 65 buildings (7%) have completed remediation works, including those awaiting building control sign-off, an increase of five since the end of October.

The CSS continues to investigate and pull in potentially eligible buildings. There are a further 2,887 buildings 11 metres and over in height in the pre-eligible stages of the Cladding Safety Scheme, which launched fully in July 2023. Of these, 1,433 buildings are progressing through eligibility checks, and 1,454 buildings are in the pre-application stage.

Developer remediation – data reported by developers as at 31 October 2025. Data received from other programmes relating to developer-led remediation is as at 30 November 2025.

As at 30 November 2025, 2,497 buildings 11 metres and over in height have been identified as having life-critical fire safety defects (including cladding and non-cladding defects) which developers have committed to remediate or pay to remediate (where the cladding remediation works are being carried out in a government funded remediation programme), an increase of 119 since reported in the October data release.

Of these, developers reported that 1,085 (43%) have either started or completed remediation works, an increase of 51 since reported in the October data release. Of these, 516 (21% of buildings) are reported to have completed remediation works, a decrease of 21 since reported in the October data release. Further detail is available in the developer-led remediation section of the data release.

When excluding buildings reported with only non-cladding defects, there are 1,805 buildings which developers have reported as having unsafe cladding, an increase of 41 since reported in the October data release. Of which 893 (49%) are reported to have started or completed remediation, an increase of 29 since reported in the October data release, including 441 (24% of buildings) which are reported to have completed remediation, a decrease of 22 since reported in the October data release. Further detail is available in the developer-led remediation section of the data release.

Social housing sector – quarterly data reported by Registered Providers of social housing is at 30 June 2025. More recent data reported by Registered Providers will be published in January 2026 at the earliest. Further detail is available in the social housing section of the data release. Where data from other government programmes has been used to supplement this, the data is as at 30 November 2025.

As at 30 November 2025, 2,959 11 metres and over in height have been identified as having life-critical fire safety cladding defects. This is an increase of one since reported in the October data release. The 2,959 buildings have been identified using survey data submitted by Registered Providers of social housing and data on buildings the government in monitoring under other government programmes (ACM programme, BSF, CSS, and Developer Remediation contract).

Of these, 1,383 (47%) are reported to have started or completed remediation works - no change since reported in the October data release. Of these, 1,099 (37% of buildings) have completed remediation - no change since the October data release.

Enforcement – monthly update (as at 21 November 2025) since previous publication

As at 21 November 2025, local authority enforcement action has been, or is being, taken under the Housing Act 2004 against 738 buildings over 11m with suspected unsafe cladding, an increase of eight since the end of October.

Introduction

This Data Release provides data on:

• The estimated number of residential buildings 11 metres and over in height in England that have or had unsafe cladding requiring remediation and the estimated cost to remediate them.
• Remediation progress across MHCLG’s Building Safety Remediation portfolio, covering buildings in the ACM programme, Building Safety Fund, Cladding Safety Scheme, developer remediation contract and reported by registered providers of social housing.
• Progress with remediation of high-rise (18 metres and over in height) residential buildings (including student accommodation and hotels) and publicly owned buildings with ACM cladding systems unlikely to meet Building Regulations in the ACM programme.
• Progress with the applications for and remediation of medium-rise (11 – 18 metres in height) residential buildings in England, and Northern Ireland, and high-rise residential buildings outside of London with non-ACM cladding systems in the Cladding Safety Scheme.
• Progress of remediation of residential buildings 11 metres and over in height with life-critical fire safety risks under the developer remediation contract.
• Progress of remediation of residential buildings 11 metres and over in height with unsafe cladding reported by registered providers of social housing.
• Enforcement action taken by local authorities against high-rise residential buildings with unsafe cladding under the Housing Act 2004.
• In additional management information tables only, the progress of the Waking Watch Relief Fund and Waking Watch Replacement Fund. From June 2025 this includes data on the Waking Watch Replacement Fund 2023.

The data in Figures 1 and 2 and the overall remediation progress section of the data release, shows the combined remediation progress across MHCLG’s Building Safety Remediation portfolio, covering buildings and accounting for crossover in the ACM programme, Building Safety Fund, Cladding Safety Scheme, developer remediation contract and reported by registered providers of social housing.

The figures in this publication are correct as at the specified dates. Remediation progress on the ACM programme, BSF and CSS will be updated monthly, and remediation progress on the developer remediation contract will be updated quarterly. Data reported by Registered Providers is as at 30 June 2025, and will be updated in January 2026 at the earliest following a change in the data collection process, and will be updated monthly thereafter.

From June 2025 the Building Safety Remediation data release includes estimates on the number of residential buildings 11 metres and over in height in England with unsafe cladding requiring remediation. These estimates are not expected to change frequently.

From November 2025 the Building Safety Remediation data release includes estimates on the cost of external wall system remediation of residential buildings 11 metres and over in height in England. These estimates are not expected to change frequently.

Enquiries

Contact: BuildingSafetyData2@communities.gov.uk

Media enquiries: 0303 444 1209 NewsDesk@communities.gov.uk

User engagement

We are committed to improving and broadening this data release further in the months ahead and would welcome feedback both on the revised content of this data release and what could be further done in the future. Please contact BuildingSafetyData2@communities.gov.uk

Dates of future publications

The publication dates for the next three months are:

• 29th January 2026
• February 2026
• March 2026

Building safety overview

This data release publishes data across all government remediation activities to give an overview of the status of progress to remediate unsafe cladding on residential buildings over 11m in England. This includes:

• Estimates of the number of buildings that have or had unsafe cladding to be remediated in a government remediation programme.
• Estimates of the total cost to remediate buildings that have or had unsafe cladding by funding source.
• Data relating to the Aluminium Composite Material (ACM) cladding programme – those highest risk buildings that are high-rise buildings with unsafe, ‘Grenfell-style’ ACM cladding.
• Data relating to the Building Safety Fund, which funds the remediation of eligible high-rise residential buildings with other forms of unsafe cladding.
• Data relating to the Cladding Safety Scheme, which funds the remediation of residential buildings over 11m in height with unsafe cladding.
• Data relating to developer-led remediation, which reports on those buildings that developers have agreed to remediate.
• Data on residential buildings over 11m in height that are the responsibility of registered social housing providers.

Estimated number of buildings with unsafe cladding

Key statistics:

MHCLG’s best estimates, as of January 2025, are that there are between 5,900 and 9,000 residential buildings, containing dwellings, 11 metres and over in height that have or had unsafe cladding requiring work in England. This equates to an estimated 12-13% of the residential building stock, containing dwellings, over 11 metres in England.

Of these:

• An estimated 2,900 - 5,800 buildings are 11-18m (7-10% of the estimated 39,000 - 59,000 11-18m buildings).
• An estimated 2,900 - 3,200 buildings are 18m+ (24-27% of the estimated 12,000 18m+ stock).

Of the 11-18m buildings requiring work:

• 78% are 11-<14m buildings (7-8% of the estimated 35,000 - 53,000 11-<14m buildings).
• 22% are 14-18m buildings (15-19% of the estimated 4,000 - 7,000 14-18m buildings).

The estimates of the number of 11-18m buildings in England and the subset of those with unsafe cladding, as of January 2025, replace the estimates first published in 2021 and in 2022. New estimates use the recently released Ordnance Survey National Geographic Database (OS NGD) data which was not available when the first estimates were calculated. More information on the methodology is available in the Technical Note.

Estimates of buildings to be remediated in MHCLG’s remediation programmes:

MHCLG estimate there to be between 5,700 and 8,600 residential buildings, 11 metres over in height that have or had unsafe cladding that will be or have been remediated or mitigated as part of the department’s five remediation programmes, and therefore will be or are already monitored in the Building Safety Remediation monthly data release.

These figures differ from those in the Key Statistics section above because:

• 18m+ hotels, student accommodation or public buildings identified with unsafe ACM cladding are included in the estimates in this section, because these buildings are remediated through the ACM programme, but are excluded from the Key Statistics section above because the buildings do not contain dwellings. At the time the estimate was made there were 98 of these buildings.
• The estimated number of 11m+ buildings which are assumed to be remediated privately, outside of one of the department’s remediation programmes, are included in the Key Statistics section above but excluded from the estimates in this section.

Of these:

• An estimated 2,800 - 5,400 buildings are 11-18m.
• An estimated 3,000 - 3,200 buildings are 18m+.

Table 1: Estimated number of residential buildings with unsafe cladding expected to be remediated or mitigated as part of MHCLG’s remediation programmes, over 11 metres with unsafe cladding, by height, England, January 2025. These figures include non dwelling 18m+ buildings with unsafe cladding, and excludes buildings assumed to be remediated outside of a remediation programme. Totals do not sum due to rounding.

Height	Low Estimate	High Estimate
11-18m	2800	5400
18m+	3000	3200
Total 11m+	5700	8600

Table 2: Estimated proportion of buildings with unsafe cladding expected to be remediated or mitigated in a government remediation programme that are currently monitored in a government remediation programme, 30 November 2025. Proportions are calculated from unrounded estimates so may not be derivable from rounded estimates in the data release.

Height	Number of buildings currently monitored	As a proportion of the low estimate	As a proportion of the high estimate
11-18m	2476	89%	46%
18m+	3137	106%	98%
Total 11m+	5613	98%	65%

As at the end of November 2025, MHCLG is monitoring the remediation progress of an estimated 65-98% of residential buildings with unsafe cladding expected to be remediated or mitigated in the department’s remediation programmes. More information on the remediation progress of buildings MHCLG are currently monitoring can be found in the Overall Remediation section of the data release.

These figures include buildings that have already completed remediation or mitigation of unsafe cladding.

Estimated cost of external wall system remediation of 11m+ residential buildings in England

Key statistics:

As of March 2025, MHCLG estimate that it will cost between £11.8bn and £22.7bn to remediate residential buildings, containing dwellings, 11 metres and above in height that have or had unsafe cladding in England.

Of this total estimated capital cost:

• An estimated £6.7bn - £15.2bn will have been funded by government once all works are completed (56% - 67% of the total capital costs);
• An estimated £5.2bn - £7.4bn will have been funded by non-government actors (33% - 44% of the total capital costs). This includes developers, registered providers of social housing and other actors.

These costs relate to buildings which will be or have been remediated or mitigated as part of the department’s five remediation programmes. The costs also include an estimated number of 11m+ buildings which are assumed to be remediated privately, outside of one of the department’s remediation programmes. They include the estimated cost of works to-date as well as future works. The estimates account for the change in funding eligibility criteria where social landlords will now receive equal access to government remediation funding as private landlords. They exclude costs which fall outside the scope of remediating buildings 11 metres and above in height that have or had unsafe cladding in England.

These estimates represent our current best estimates and will be subject to change as more information becomes available. They update estimates previously published in the National Audit Office (NAO) report “Dangerous cladding: the government’s remediation portfolio” in November 2024.

More information on the methodology is available in the Technical Note.

Table 3: Estimated capital cost of external wall system works to residential buildings over 11 metres with unsafe cladding to be, and which have been, remediated or mitigated, by funding source, England, March 2025, £bn (nominal terms, nearest £0.1bn).

Funding source	Low estimate	Central estimate	High estimate
Government programmes	6.7	8.9	15.2
Non-government actors	5.2	6.1	7.4
Total	11.8	15.1	22.7

Table 4: Estimated proportion of capital costs of external wall system works to buildings over 11 metres with unsafe cladding expected to be, and which have been, remediated or mitigated, by funding source, England, March 2025.

Funding source	Low estimate	Central estimate	High estimate
Government programmes	56%	59%	67%
Non-government actors	44%	41%	33%
Total	100%	100%	100%

Funding sources available to MHCLG for remediation:

It is estimated that under current plans, MHCLG will have £9.2bn available to fund the remediation of external wall system defects.

This includes:

• a £5.15bn Exchequer contribution;
• an estimated £700m in refunds from developers;
• a £3.4bn Building Safety Levy revenue target.

As cost estimates continue to be updated, the Levy revenue target will be reviewed and adjusted such that funding available for remediation aligns to government expenditure.

Overall remediation progress

Figure 3: 2,741 residential buildings (49% of identified buildings) have started or completed remediation on unsafe cladding, of which 1,938 (35% of identified buildings) have completed remediation works.

Table 5: Remediation progress for buildings monitored by MHCLG in the ACM programme, Building Safety Fund, the CSS, the developer remediation contract, and social housing surveys, England, 30 November 2025.

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	1938	35%	1938	35%
Remediation underway	803	14%	2741	49%
In programme	2872	51%	5613	100%
Total	5613	100%	5613	100%

Overall remediation: key statistics

Of the 5,613 residential buildings 11 metres and over in height with unsafe cladding the department is monitoring, as of 30 November 2025:

• 1,938 buildings (35%) have completed remediation, including those awaiting building control sign off
• 803 buildings (14%) have started remediation
• 2,872 buildings (51%) have not started remediation

Since the end of October 2025:

• The department is monitoring the remediation progress of 43 more buildings.
• 36 more buildings are known to have started or completed remediation.
• Eight fewer buildings are known to have completed remediation. While 27 buildings are reported to have completed remediation in the most recent time period when they previously were not reported to have completed remediation (24 buildings) or not reported to have cladding defects (three buildings), this was offset by the status of 35 buildings changing from having completed remediation to not have cladding defects (10 buildings) or not having completed remediation (25 buildings) in the latest time period. The majority of the buildings whose statuses changed to not having started or completed remediation, or not having cladding defects, were reported as such by one developer in their latest return.

Since the end of November 2024:

• The department is monitoring the remediation progress of 615 more buildings, largely due to more buildings being identified with unsafe cladding in the CSS and reported by developers and social housing registered providers.
• 344 more buildings are known to have started or completed remediation, of which 475 more buildings are known to have completed remediation.

There are an estimated 294,000 dwellings in the occupied private and social sector 11m+ residential buildings with unsafe cladding that the department are monitoring. Of these an estimated 115,000 dwellings are in buildings that have completed remediation, and an estimated 47,000 additional dwellings are in buildings that have started remediation. An estimated 133,000 dwellings are in buildings that have not started remediation.

Figure 4: Progress of remediating unsafe cladding differs across the programmes due to the differing maturity of the schemes.

Overall remediation by height

Figure 5: 58% of the 18m+ buildings the department is monitoring the remediation progress of have started or completed remediation on unsafe cladding, compared to 37% of 11-18m buildings.

Overall remediation by tenure

Figure 6: 47% of the social buildings the department is monitoring the remediation progress of have started or completed remediation on unsafe cladding, compared to 49% of the private buildings.

The ‘Other’ bar includes high-rise buildings with unsafe ACM that are hotels, student accommodation and public buildings.

Overall remediation by location

Figure 7: Most buildings that the department are monitoring the cladding remediation of are concentrated around urbanised areas in England, particularly the urban areas of Greater London, Greater Manchester, West Yorkshire and the south coast.

England, 30 November 2025

Local authorities with 10 or fewer 11m+ buildings monitored with unsafe cladding are excluded from this map as their inclusion could lead to the identification of buildings with unsafe cladding.

ACM remediation

Information in this section is correct as at 30 November 2025 and shows a monthly update from the previous publication.

Figure 8: 97% of the 513 identified ACM clad high-rise buildings have started or completed remediation, with 95% having had their ACM cladding removed and 91% having completed remediation, including those awaiting building control sign-off.

Table 6: Remediation status of buildings with ACM cladding systems unlikely to meet Building Regulations, 30 November 2025

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Completed Remediation	452	88%	452	88%
Remediation complete awaiting building control signoff	15	3%	467	91%
Remediation started - cladding removed	20	4%	487	95%
Remediation started	11	2%	498	97%
Remediation plans in place	9	2%	507	99%
Intent to remediate	4	1%	511	<100%
Remediation plan unclear	2	<1%	513	100%
Total	513	100%	513	100%

ACM remediation: key statistics

As of 30 November 2025, the department has identified 513 high-rise residential and publicly owned buildings identified with ACM cladding systems unlikely to meet Building Regulations, no change since the end of October.

• 467 buildings (91% of all buildings) have completed ACM remediation – no change since the end of October. Of these, 452 buildings (88% of all buildings) have received building control sign off – an increase of two since the end of October.
• 498 buildings (97% of all buildings) have started or completed ACM remediation – no change since the end of October. Of these, 487 buildings (95% of all buildings) have removed ACM cladding – no change since the end of October.

There are an estimated 28,800-32,000 dwellings in private and social sector buildings that have completed remediation, and a further 3,400-3,500 dwellings in occupied private and social sector buildings that have yet to be remediated.

Driving ACM remediation forward

There are 15 buildings yet to start ACM remediation (3% of all buildings) - no change since the end of October. One building is vacant so does not pose a risk to resident safety.

Table 7: Enforcement action and forecast start dates for occupied high-rise buildings yet to start ACM remediation, 30 November 2025

Occupied buildings that have:	Undergone enforcement action	Undergone enforcement action supported by Joint Inspection Team	Forecast start available	Forecast to start by the end of December 2025
Total	6	3	8	0

Of the 14 high-rise occupied buildings yet to start ACM remediation:

• Seven buildings are forecast to start works by the end of 2026, and four of these have had local authority enforcement action taken against them.
• One building is forecast to start works in 2027 and has had local authority enforcement action taken against it.
• One building without a forecast start date has had local authority enforcement action taken against it.
• The remaining five buildings were determined as in scope of the ACM monitoring programme in 2025. The department continues to engage with building owners to ensure their remediation is progressed.

These forecast estimates are based on information provided by building owners and agents and may change as further information is received. These estimates can also change as a result of buildings being newly identified. The department continues to engage with building owners to start remediation works on site as soon as possible, and will continue to support local authorities and fire and rescue services in the use of their enforcement powers.

Figure 9: 97% of buildings are forecast to have started or completed ACM remediation works by the end of December 2025.

ACM remediation progress by year of identification

Figure 10: 99% of buildings identified at 31 December 2023 have started or completed remediation compared to 97% of all buildings in the programme.

Since 31 December 2021, 32 further high-rise residential buildings have been identified with ACM cladding systems unlikely to meet Building Regulations and have moved into scope of the Building Safety Programme. Of these, six buildings were identified in 2022, eight buildings were identified in 2023, 10 buildings were identified in 2024 and eight buildings were identified in 2025.

Table 8: Buildings with unsafe ACM cladding by year of identification, 30 November 2025

Year of identification	Number of buildings identified	Cumulative number
2017 - 2019	428	428
2020	31	459
2021	22	481
2022	6	487
2023	8	495
2024	10	505
2025	8	513
Total	513	513

ACM remediation by sector

Figure 11: 99% of the 162 social sector residential buildings in the ACM programme have started or completed remediation, compared to 95% of the 250 private sector residential buildings.

Building Safety Fund

Information in this section is correct as at 30 November 2025 and shows a monthly update from the previous publication.

Figure 12: 78% of buildings proceeding with an application for funding in the BSF have started or completed remediation, with 64% having completed remediation, including those awaiting building control sign-off.

Table 9: Remediation status of buildings within the Building Safety Fund, 30 November 2025

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	327	46%	327	46%
Remediation complete: awaiting building control sign-off	121	17%	448	64%
Remediation started	102	14%	550	78%
Remediation plans in place	126	18%	676	96%
Intent to remediate	29	4%	705	100%
Total	705	100%	705	100%

BSF remediation: key statistics

As at 30 November 2025, 705 buildings were assessed as eligible and are proceeding with an application for funding from the Building Safety Fund. The remaining 3,005 buildings registered with the fund are either ineligible (1,117), withdrawn (1,626), in review or have given insufficient evidence (2), have transferred to the Cladding Safety Scheme (248), or have been retained by the Cladding Safety Scheme (12).

Of the 3,005 buildings that registered with the Building Safety Fund and are not currently proceeding with an application for funding, 461 buildings which were assessed as eligible have been transferred to developers.

As at 30 November 2025, 248 buildings have been transferred to the Cladding Safety Scheme for their remediation and are progressing through the CSS fund, an increase of three buildings since reported at the end of October. Of these, 245 buildings had not started remediation works before transferring to the CSS.

The number of buildings reported as transferred from the BSF to the CSS in this section of the data release may not be the same as the number of eligible CSS buildings that have transferred from the BSF in the CSS section of the data release. This is because different programmes may define buildings differently due to how they operate. One building has also withdrawn from the CSS since transferring from the BSF.

Of the 705 buildings proceeding with an application for funding in the Building Safety Fund:

• 174 buildings (25%) are remaining in the fund with developers set to reimburse the cost of remediation.
• Four buildings (1%) are anticipated to be transferred to developers.

Of the 705 buildings proceeding with an application for funding, 137 buildings have been assessed with a Fire Risk Appraisal for External Walls (FRAEW), and 568 have been assessed under the BSF 2020 CAN criteria. It is possible for a building to submit a new application to the fund after having completed remediation, if it originally applied under the BSF 2020 CAN criteria. Therefore, buildings could be double counted. As of 30 November 2025 one building had undertaken remediation work from both application periods, so is double counted. Further details are available in the technical note.

Of the 705 buildings proceeding with an application for funding, 550 buildings (78%) have either started or completed remediation works – a decrease of one since the end of October. This decrease is due to two buildings which have remediation works underway transferring to developers, whilst one building was made eligible for the fund with works already underway.

Of the 550 buildings that have started or completed remediation as at 30 November 2025:

• 102 buildings (14% of all buildings) have started remediation.
• 448 buildings (64% of all buildings) have completed remediation – an increase of four since the end of October. Of these, 327 buildings (46% of all buildings) have received building control sign off.

There are 155 eligible buildings proceeding with an application for funding that have not started remediation, of which:

• 126 (18% of all buildings) have remediation plans in place.
• 29 (4% of all buildings) have reported an intent to remediate.

There are an estimated 59,000 dwellings in buildings that are eligible and proceeding with an application for funding in the BSF.

BSF remediation progress over time

Figure 13: 29 more buildings proceeding with an application for funding in the BSF have started or completed remediation since the end of November 2024

Since the end of November 2024:

• 104 fewer eligible buildings are proceeding with an application for funding from the Building Safety Fund.
• 29 more eligible buildings have started or completed remediation, and 91 more eligible buildings have completed remediation.

BSF remediation by tenure

Figure 14: 91% of social sector buildings in the BSF, including buildings with a financial viability claim, have started or completed remediation compared to 75% of private sector buildings.

Cladding Safety Scheme

Information in this section is correct as at 30 November 2025 and shows a monthly update from the previous publication.

Figure 15: There are 3,822 buildings at different stages of the Cladding Safety Scheme, including 1,433 buildings with live applications and 935 eligible buildings, of which 190 buildings have started or completed works, with 65 having completed works.

Table 10: Remediation status for buildings within the Cladding Safety Scheme, 30 November 2025

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	65	7%	65	7%
Works started	125	13%	190	20%
In programme	745	80%	935	100%
Total	935	100%	935	100%

Cladding Safety Scheme: Key statistics

As at the end of November 2025, there were 3,822 buildings in the different stages of the Cladding Safety Scheme (935 eligible buildings and 2,887 pre-eligible buildings). Of the 2,887 pre-eligible buildings:

• 1,454 buildings are in the pre-application stage.
• 1,433 buildings have a live application and are progressing through the eligibility stages.

There are 935 eligible buildings as at the end of November 2025, an increase of 23 since the end of October. None of the newly eligible buildings this month have been transferred from the BSF. In total, 228 of the eligible buildings in the CSS have been transferred from the BSF.

The number of eligible CSS buildings reported as transferred from the BSF to the CSS in this section of the data release may not be the same as the number of buildings that have transferred from the BSF to the CSS in the BSF section of the data release. This is because different programmes may define buildings differently due to how they operate. One building has also withdrawn from the CSS since transferring from the BSF.

Of the 935 eligible buildings:

• 889 buildings (95% of eligible buildings) have signed Grant Funding Agreements (GFA) - an increase of 50 since the end of October.
• Of these, 679 buildings (73% of all eligible buildings) have received a pre-tender support payment – an increase of 26 since the end of October.
• 190 buildings (20% of all eligible buildings) have started or completed remediation works on site – an increase of 10 since the end of October.
• Of these, 65 buildings (7% of all eligible buildings) have completed remediation works on site, including those awaiting building control sign-off – an increase of five since the end of October.

Four eligible buildings are in Northern Ireland, with the remainder in England.

Height breakdown

Figure 16: 29% of eligible 11-18m buildings in the CSS have started or completed remediation, compared to 7% of eligible 18m+ buildings.

Tenure breakdown

Figure 17: 19% of eligible social sector buildings in the CSS have started or completed remediation, compared to 21% of eligible private sector buildings.

Developer-led remediation

Information in this section reported by developers is correct as at 30 November 2025.

The estimates in this section include some buildings which are also included in other sections of this data release e.g., those reported under the following sections: ‘ACM Remediation’, ‘Building Safety Fund’, ‘Cladding Safety Scheme’ and ‘Social Housing Sector’.

Figure 18: 43% of buildings in the developer remediation contract have either started or completed remediation works on life-critical fire safety risks, with 21% having completed remediation works, including those awaiting building control sign-off.

Table 11: Remediation status of buildings requiring works under the developer remediation contract, 30 November 2025. Percentages may not sum to 100% due to rounding.

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	413	17%	413	17%
Remediation complete – awaiting building control sign-off	103	4%	516	21%
Remediation started	569	23%	1085	43%
Remediation not started – plans in place	367	15%	1452	58%
Remediation not started – no plans in place	1045	42%	2497	100%
Total	2497	100%	2497	100%

Developer remediation: key statistics

The estimates in this section are based on a combination of self-reported data submitted by developers and information that has been imputed from Building Safety Fund (BSF), Cladding Safety Scheme (CSS) and ACM programme data. A building is identified with life-critical fire safety defects if:

• The developer has self-reported that works are (or were) required on the building
• The developer has reported a remediation status of planned, started or complete
• The building is eligible for funding in the BSF, Cladding Safety Scheme (CSS) or is being monitored under the ACM programme (including buildings developers have agreed to reimburse taxpayers for);
• The building has had money paid out by the BSF or ACM remediation funds.

Furthermore, where a building has been identified with life-critical fire safety defects but the developer has not reported a defect type in the question ‘What do the issues relate to’ it is assumed that the defect type relates to cladding.

Other data, unless otherwise stated, is based on self-reported data by developers in their latest data report.

As at 30 November 2025, 53 developers have signed the developer remediation contract. There are 4,679 buildings covered by the developer remediation contract. Of these, 2,497 have been identified as having life-critical fire safety defects that developers are obligated to remediate or pay to remediate – an increase of 119 since the October data release. This increase is due to developers identifying more buildings with life critical fire safety defects over the last quarter.

Of the 2,497 buildings identified as having life-critical fire safety risks:

• 516 (21%) are reported to have completed remediation – a decrease of 21 since the October data release. 23 buildings are reported to have completed remediation, when they previously were not reported to have completed remediation (21 buildings) or have defects (2 buildings). The status of 44 buildings changed from having completed remediation to not having defects (one building), to not having started remediation (two buildings), or to having works underway (41 buildings). The majority of buildings which have changed status from completed to not completed are due to one developer identifying other defects which still require works.
• Of the 516 buildings that are reported to have completed remediation, 413 buildings (17% of all buildings with defects) are reported to have received building control sign-off.
• 1,085 (43%) are reported to have started or completed remediation – an increase of 51 since the October data release.
• 367 (15%) are reported to have not started remediation but have plans in place – a decrease of 11 since the October data release.
• 1,045 buildings (42%) have not started and have no plans in place - an increase of 79 since the October data release.

Although information from developers is received quarterly, these statistics are subject to change and are updated monthly as information from other programmes which relate to remediation is updated monthly.

The 2,497 buildings identified as requiring remediation have an estimated cost of remediation of around £4.2 billion. This is a decrease of £0.5bn since reported in the October data release. This cost is based on the self-reported cost of works in the developer data report. However, if the cost is not known it is imputed based on the average known reported cost by developers by height band of the building and defect type reported. The decrease is due to a revised methodology to remove outliers from the average and more accurately impute missing costs by accounting for variations in the cost of different defect types. Furthermore, the average cost reported by developers for life critical fire safety defects has decreased since the October data release, as developers have either revised previous estimates down for some buildings, or where they are reporting costs for buildings newly identified with defects these costs are lower than typically seen. As a result, where costs are being imputed using an average, these averages are lower than in the October data release.

There are an estimated 153,000 dwellings in buildings with defects that developers are committed to remediate. Of these, there are an estimated 71,000 dwellings in buildings that are reported as having either started or completed remediation works.

Based on start and completion dates reported by developers, 545 buildings which have not yet started are reportedly expected to start works between 1 November 2025 and 31 October 2026, and 352 buildings which have not yet completed are reportedly expected to complete their remediation between 1 November 2025 and 31 October 2026.

450 buildings have transferred from the Building Safety Fund to developers, an increase of two since the October data release:

• 68 (15%) have completed remediation - an increase of eight since the October data release. Of these 68, 46 buildings (10% of all buildings) are reported to have received building control sign-off.
• 196 (44%) have started or completed remediation – an increase of three since the October data release.
• 107 (24%) are reported to have not started remediation but have plans in place – an increase of one since the October data release.
• 84 (19%) are reported to have not started remediation and have no plans in place – an increase of four since the October data release.
• 63 (14%) have not been identified by developers as having life-critical fire-safety defects – a decrease of six since the October data release.

The 450 buildings in the developer remediation contract differs from the 461 reported in the Building Safety Fund section of the data release, due to developers defining buildings differently to in the Building Safety Fund. The same building structures are included in both sections of the release.

Height breakdown

Figure 19: 51% of the 18m+ buildings have started or completed remediation, compared to 37% of the 11-18m buildings.

Cladding defects

The estimates in this section are based on a combination of self-reported data submitted by developers and information that has been imputed from Building Safety Fund (BSF) and ACM programme data (please see above for further details).

Where a building has been identified with life-critical fire safety defects but the developer has not reported a defect type in the question ‘What do the issues relate to’ it is assumed that the defect type relates to cladding.

Some remediation being undertaken by developers on buildings with life-critical fire safety risks relate to non-cladding defects. When excluding buildings reported to have only non-cladding defects, there are 1,805 buildings which developers have reported as having unsafe cladding – an increase of 41 since the October data release. This increase is due to developers identifying more buildings with life critical fire safety defects over the last quarter. Of these:

• 441 (24%) are reported to have completed remediation– a decrease of 22 since the October data release. 20 buildings are reported to have completed remediation, when they previously were not reported to have completed remediation (17 buildings), to have cladding defects (three buildings). The status of 42 buildings changed from having completed remediation to not having cladding defects (11 buildings) or to having works underway (31 buildings). The majority of buildings which have changed status from completed to not completed are due to one developer identifying other defects which still require works.
• Of the 441 buildings that are reported to have completed remediation, 345 buildings (19% of all buildings with defects) are reported to have received building control sign-off.
• 893 (49%) are reported to have started or completed remediation – an increase of 29 since the October data release.
• 306 (17%) are reported to have not started remediation but have plans in place – a decrease of 17 since the October data release.
• 606 (34%) are reported to have not started remediation but have plans in place – an increase of 29 since the October data release.

These estimates are subject to change each month due to the monitoring of buildings under the developer remediation contract in other remediation programmes.

Self-reported information

The figures reported for developers above combine information received directly from developers as well as information held by the department from other programmes which relate to remediation. This is to help better estimate a figure for buildings requiring remediation under the developer remediation contract. The figures reported above will also include buildings which are being remediated solely under a government remediation scheme, for which the developer will reimburse taxpayers.

The estimates in this section report on buildings which have been self-reported by developers as requiring remediation to life-critical fire safety risks. Furthermore, this section reports on buildings which are being remediated by the developer directly, rather than being remediated through a government fund and being reimbursed to taxpayers. However, some buildings being remediated under a government remediation programme will be included if other relevant fire safety defects have been found, which were not eligible for a government remediation programme and which the developer is remediating themselves. Developers have self-reported that 2,354 buildings require life-critical fire safety remediation, which will be directly remediated by the developer, an increase of 108 since the October data release. This increase is due to developers identifying more buildings with life critical fire safety defects over the last quarter.

Buildings that are being remediated in the BSF, ACM or CSS programme, but are also reported to have other non-EWS life-critical fire safety defects by the developer will be included in these statistics.

Of these 2,354 buildings being directly remediated by the developer:

• 444 buildings (19%) have completed remediation, a decrease of 16 since the October data release. 21 buildings are reported to have completed remediation, when they previously were not reported to have completed remediation (19 buildings) or have defects (two buildings). The status of 37 buildings changed from having completed remediation to not having started remediation (two buildings) or to having works underway (35 buildings). The majority of buildings which have changed status from completed to not completed are due to one developer identifying other defects which still require works
• Of the 444 buildings that are reported to have completed remediation, 356 buildings (15% of all buildings with defects) are reported to have received building control sign-off.
• 968 buildings (41%) have started or completed remediation, an increase of 47 since the October data release.
• 366 buildings (16%) have not started remediation but have a plan in place, a decrease of 11 since the October data release.
• 1,020 buildings (43%) have not started and have no plans in place, an increase of 72 since the October data release.

Further information on the progress developers have made regarding the buildings they’ve reported on is available in the accompanying management information tables and quarterly Developer remediation contract data release. These additionally include an update against the commitments set out in the joint plan to accelerate developer-led remediation and improve resident experience, which was published alongside the department Remediation Acceleration Plan (RAP).

Additionally, alongside the Building Safety Remediation Data Release, MHCLG publishes a ‘developer progress chart’ which allows you to compare the progress developers have made on determining whether works are required on buildings they are responsible for, as well as progress being made on buildings requiring works that have started on site. This chart represents the self-reported information shown above and is published in the accompanying dashboard.

Social housing sector

From September 2023 to June 2025, social housing remediation data was collected via a building level survey administered on MHCLG’s behalf by the Regulator of Social Housing (RSH). Since July 2025, the department has been working with Homes England to migrate the data collection method onto a digital platform, the National Remediation System (NRS). Whilst work to quality-assure the new data and integrate into the publication processes is ongoing, this data release will continue to utilise data from the last RSH administered building level survey, which contained data for buildings as at June 2025. The new data will be published in January 2026 at the earliest.

The Regulator of Social Housing (RSH) has collected aggregate-level data from Registered Providers of Social Housing as at September 2025. This is published on Fire safety remediation in social housing in England - GOV.UK. The estimates in this data release will therefore differ from those included in the Regulator of Social Housing’s data release.

The estimates in this section also include social buildings the department has identified in other remediation programmes as having unsafe cladding and are also being monitored in those programmes. Information in this section received from other programmes that relate to social housing is correct as 30 November 2025.

The estimates in this section include some buildings which are also included in other sections of this data release e.g., those reported under the following sections: ‘ACM Remediation’, ‘Building Safety Fund’, ‘Cladding Safety Scheme’ and ‘Developer Remediation’.

Figure 20: 47% of social buildings identified to have unsafe cladding have started or completed remediation works, with 37% (of identified buildings) having completed remediation works, including those awaiting building control sign-off.

Table 12: Remediation status of social buildings with unsafe cladding, 30 November 2025.

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	1053	36%	1053	36%
Remediation complete – awaiting building control sign-off	46	2%	1099	37%
Remediation started	284	10%	1383	47%
Remediation works planned	980	33%	2363	80%
Remediation plans unclear from survey	596	20%	2959	100%
Total	2959	100%	2959	100%

Social housing remediation: Key statistics

The estimates in this section are based on a combination of self-reported data submitted by registered providers and information that has been imputed from Building Safety Fund (BSF), Cladding Safety Scheme, ACM programme data and data submitted by developers under the Developer Remediation Contract. A building is identified with life-critical fire safety defects if the registered provider has self-reported cladding defects, the building is eligible for funding in the BSF, CSS or is being monitored under the ACM programme, or the building is reported by developers with cladding defects in their latest quarterly data report.

549 registered providers of social housing were invited to respond to this round of a survey on their 11m+ stock. 939 small registered providers were excluded from this round of the survey because they had indicated that they were not Responsible Entity for any 11m+ residential buildings.

As at 30 November 2025, 2,959 social buildings 11 metres and over in height have been identified as having life-critical fire-safety cladding defects – an increase of one building since the October data release. Of the 2,959 buildings identified with unsafe cladding:

• 1,925 were reported by Registered Providers to have unsafe cladding at the time of their most recent assessment. This could include buildings whose remediation work has been completed but await building control sign off and those awaiting a subsequent assessment to confirm no outstanding life-critical fire-safety defects. Additional information on these buildings is available in the accompanying management information tables, social housing provider release document and the Regulator of Social Housing’s publication on Fire safety remediation in social housing in England.
• 885 were reported by Registered Providers to have unsafe cladding since June 2017, but prior to the most recent assessment, which have since been remediated.
• 149 were identified under other remediation programmes (BSF, ACM, CSS or developer remediation) as having unsafe cladding and are also being monitored in those programmes.

Of the 2,959 buildings identified to have unsafe cladding:

• 1,099 buildings (37%) are reported to have completed remediation – no change since reported in the October data release. Of these, 1,053 (36% of all buildings with defects) are reported to have received building control sign-off - no change since reported in the October data release.
• 1,383 buildings (47%) are reported to have started or completed remediation – no change since reported in the October data release.
• 1,576 buildings (53%) are reported to have not yet started remediation – an increase of one since reported in the October data release.
• 980 buildings (33%) are reported to have not started remediation but have plans in place – no change since reported in the October data release.

Of the 1,576 buildings with cladding defects that have not yet started remediation, 1,152 buildings are not currently covered by the developer remediation contract or are not currently eligible in another government programme.

Although information from registered providers of social housing is received quarterly, these statistics will be updated monthly as information from other programmes which relate to social building remediation is updated monthly.

Figure 21: 55% of the 18m+ social buildings identified to have unsafe cladding have started or completed remediation, compared to 38% of the 11-18m buildings.

Additional information available for individual social housing providers is available in the management information tables and social housing provider release document.

The estimates in this section exclude one building identified with unsafe cladding which has been decanted prior to demolition.

Social housing remediation: data reported by registered providers of social housing

The estimates in this section include buildings self-reported by registered providers in the latest survey (as at 30 June 2025) as having unsafe cladding since June 2017.

Registered Providers reported that 2,810 buildings have been found to have unsafe cladding since June 2017, an increase of 153 since reported in the 31 March 2025 Social Housing Remediation data release. Of these, 885 completed remediation prior to their most recent building works assessment and 1,925 have been identified with unsafe cladding at the time of the most recent building works assessment. Of the 2,810 buildings:

• 1,042 buildings (37%) that were identified with unsafe cladding since June 2017 are reported to have completed remediation – an increase of 149 buildings since reported in the 31 March 2025 Social Housing Remediation data release.
• 1,307 buildings (47%) are reported to have started or completed remediation – an increase of 159 since reported in the 31 March 2025 Social Housing Remediation data release. 213 buildings are reported to have started or completed remediation, when they previously were not reported to have started remediation (89 buildings), or have cladding defects (124 buildings). The status of 54 buildings changed from having started or completed remediation to not having cladding defects or no longer being reported in the survey (25 buildings), or to not having started remediation (29 buildings).
• 980 buildings (35%) buildings are reported to have not started remediation but have plans in place – a decrease of four since reported in the 31 March 2025 Social Housing Remediation data release.

Enforcement

Information in this section is correct as at 21 November 2025 and shows a monthly update from the previous publication.

This section includes local authority enforcement action on buildings 11 metres or over in height. Up until June 2024 only enforcement action taken on buildings over 18m in height was reported on.

Local authority enforcement action: key statistics

As at 21 November 2025, enforcement action has been, or is being, taken under the Housing Act against 738 buildings over 11m with suspected unsafe cladding - an increase of eight since the end of October. Of these, 177 buildings have had 180 inspections with Joint Inspection Team support – an increase of one inspection since the end of October.

Of the 738 buildings where a local authority had undertaken an inspection, we are aware that:

• 140 had a Category 1 HHSRS rating
• 521 had a Category 2 HHSRS rating

As several buildings have now had two or more inspections, from August 2024, only the most recent inspection’s category rating is reported on, as this is used to gauge the risks of the buildings in each Local Authority’s portfolio. Additional inspections are still reported as enforcement action.

Of the 738 buildings, we are aware that at least 234 improvement notices, 74 hazard awareness notices and 1 prohibition order have been served to date. Some buildings may have received multiple notices. We understand that 57 of the improvement notices have been subject to appeals.

Accompanying dashboard

An additional interactive dashboard showing the information in this release is available.

Accompanying tables

Additional management information tables are available.

The tables provide data on:

• The estimated number of residential buildings 11 metres and over with unsafe cladding and the estimated cost to remediate them,
• the remediation progress of high-rise (18 metres and over) residential buildings identified with unsafe Aluminium Composite Material (ACM) cladding systems,
• the remediation progress of high-rise residential buildings with unsafe non-ACM cladding systems that are pursuing successful applications from their Building Safety Fund (BSF) Registration,
• data on buildings in the Cladding Safety Scheme (CSS),
• the remediation progress of buildings covered by the developer remediation contract, including a developer-by-developer breakdown,
• the remediation progress of buildings monitored under the social housing survey, including a provider-by-provider breakdown,
• the progress of the Waking Watch Relief Fund and Waking Watch Replacement Fund, and
• building safety enforcement action undertaken by Local Authorities in England.

Related statistics

BRE Testing

Previously, MHCLG published a table on samples received by BRE for testing which has been discontinued as of October 2019 (see technical notes document). The data table of descriptions of large-scale system tests undertaken by the BRE and the number of buildings with similar cladding systems was discontinued in November 2020.

Developer Data

MHCLG has published data provided by developers who have signed the developer remediation contract. This release provides information on the number of buildings in scope of the contract, assessments in place, number of buildings requiring remediation works and status of those works by developer.

English Housing Survey: Feeling Safe from Fire

MHCLG has published the English Housing Survey 2020 to 2021: Feeling Safe from Fire report, providing information on the extent to which people feel safe from fire in their homes.

Estimating the prevalence and costs of external wall system life-safety fire risk in mid-rise residential buildings

MHCLG has published data on the prevalence of external wall system life-safety fire risk in mid-rise (11-18m) residential buildings in England, and the estimated cost as at July 2021 to remediate or mitigate these buildings. On 17th July 2025, MHCLG published an updated estimate of the prevalence of external wall system fire risk in mid-rise buildings. Should these figures change further, MHCLG will publish a new update.

EWS1 requirements on residential buildings in England

MHCLG publishes quarterly data on the numbers of EWS1 forms (or equivalent) that have been required on mortgage valuations for flats.

Population and Dwelling Numbers

Previously, MHCLG published estimates on population and dwelling numbers of residential buildings in the Building Safety Programme data release. Should these figures change, MHCLG will publish a new update. On 17 July 2025, MHCLG published an updated estimate of the number of 11-18m residential buildings in England. Should these figures change further, MHCLG will publish a new update.

RSH publication

On 18 December 2025, the Regulator of Social Housing published findings from the aggregate-level Fire Safety Remediation Survey (FRS) collected from Registered Providers of Social Housing for buildings 11 metres and over in height as at 30 September 2025. Social Housing Provider Data

MHCLG has published data provided by social housing providers on remediation progress of their building stock. This release provides information on the number of buildings, assessments in place, number of buildings requiring remediation works and status of those works by social housing provider.

Waking Watch costs

On 16 October 2020, MHCLG published information on Waking Watch costs based on data collected through a range of external stakeholders from July to September 2020.

Cladding remediation unit costs

On 19 December 2025, MHCLG published data on cladding remediation unit costs, providing data on costs per square metre of cladding remediated for high-rise and mid-rise non-ACM buildings, including analysis by cladding area and cost categories.

Technical note

Please see the accompanying technical notes document for further details.