Research and analysis

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

Published 25 September 2025

Applies to England

Date of next publication:  9.30am on Thursday 23 October 2025

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

Headlines

Overall remediation

As at the end of August 2025, there are 5,554 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 340 since the end of July 2025. This is an estimated 65-97% 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, 1,757 more buildings with unsafe cladding are being reported on in this release.

Overall, 2,677 buildings (48%) have either started or completed remediation works. Of these, 1,927 buildings (35%) have completed remediation works.

Figure 1: Of the 5,554 buildings identified with unsafe cladding, 2,677 (48%) have started or completed remediation works, of which 1,927 (35%) have completed remediation works. This includes remediation progress on high rise (18m+) and mid-rise (11-18m) buildings in height.

Note: From October 2023 onwards combined remediation progress is shown across the BSF, ACM programme, Cladding Safety Scheme, developer remediation contract and as reported by registered providers of social housing. 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 August 2025) since previous publication.

As at 31 August 2025 of the 511 high-rise (18 metres and over in height) residential and publicly owned buildings with ACM cladding systems, unlikely to meet Building Regulations, 497 (97%) have either started or completed remediation works, no change since the end of July.

Of these, 462 buildings (90%) have completed ACM remediation, including those awaiting building control sign-off, an increase of two since the end of July.

There are 14 buildings yet to start ACM remediation (3% of all buildings), no change since the end of July. One building is vacant so does not pose a risk to resident safety, nine occupied buildings have forecast start dates, a further building has had local authority enforcement action taken against them and the remaining three buildings have come into scope in 2024 and 2025.

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

As at 31 August 2025, of the 774 high-rise (18 metres and over in height) residential buildings proceeding with an application for funding through the Building Safety Fund, 115 buildings (15%) have started remediation works and 430 buildings (56%) have completed remediation on unsafe non-ACM cladding, including those awaiting building control sign-off.

Overall, 545 high-rise buildings (70%) in the BSF have either started or completed remediation works on non-ACM cladding, no change since the end of July. Of these, 430 buildings (56% of buildings) have completed remediation works, an increase of six since the end of July.

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

As at 31 August 2025, 806 buildings 11 metres and over in height have been assessed as eligible for the Cladding Safety Scheme (including 170  buildings that have transferred from the BSF), an increase of 24 since the end of July. Of these, 155 buildings (19%) have either started or completed remediation works, an increase of 13 since the end of July. Of these, 53 buildings (7%) have completed remediation works, including those awaiting building control sign-off, an increase of four since the end of July.

The CSS continues to investigate and pull in potentially eligible buildings. There are a further 3,861  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, 321 buildings are progressing through eligibility checks, and 3,540 buildings are in the pre-application stage.

Developer remediation – data received from developers as at 31 July 2025. Data received from other programmes relating to developer-led remediation is as at 31 August 2025.

As at 31 August 2025, 2,377 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 351 since reported in the July data release.

Of these, developers reported that 1,034 (44%) have either started or completed remediation works, an increase of 37 since reported in the July data release. Of these, 537 (23% of buildings) are reported to have completed remediation works, an increase of 21 since reported in the July data release.

When excluding buildings reported with only non-cladding defects, there are 1,763 buildings which developers have reported as having unsafe cladding, an increase of 236 since reported in the July data release. Of which 864 (49%) are reported to have started or completed remediation, an increase of 40 since reported in the July data release, including 463 (26% of buildings) which are reported to have completed remediation, an increase of 15 since reported in the July data release.

Social housing sector – quarterly data received from Registered Providers of social housing is at 30 June 2025. Where data from other government programmes has been used to supplement this, the data is as at 31 August 2025.

As at 31  August  2025, 2,953 social buildings 11 metres and over in height have been identified as having life-critical fire safety cladding defects. This is an increase of  148 buildings since reported in the July data release. The 2,953 buildings have been identified using survey data submitted by Registered Providers of social housing and data on buildings the department is 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 - an increase of 156  buildings since reported in the July data release. Of these, 1,099 buildings (37% of buildings) have completed remediation - an increase of 146 buildings since reported in the July data release. Further detail is available in the social housing section of the data release.

Enforcement – monthly update (as at 20 August 2025) since previous publication

As at 20 August 2025, local authority enforcement action has been, or is being, taken under the Housing Act 2004 against 677 buildings over 11m with suspected unsafe cladding, an increase of 18 since the end of July.

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.

• 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 Figure 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 and registered providers of social housing will be updated quarterly.

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.

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:

• 23 October 2025

• 20 November 2025

• December 2025

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.

• 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, 31 August 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	2422	87%	45%
18m+	3132	106%	98%
Total 11m+	5554	97%	65%

As at the end of August 2025, MHCLG is monitoring the remediation progress of an estimated 65-97% 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.

Overall remediation progress

Figure 2: 2,677 residential buildings (48% of identified buildings) have started or completed remediation on unsafe cladding, of which 1,927 (35% of identified buildings) have completed remediation works.

Table 3: 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, 31 August 2025.

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	1927	35%	1927	35%
Remediation underway	750	14%	2677	48%
In programme	2877	52%	5554	100%
Total	5554	100%	5554	100%

Overall remediation: key statistics

Of the 5,554 residential buildings 11 metres and over in height with unsafe cladding the department is monitoring, as of 31 August 2025:

• 1,927 buildings (35%) have completed remediation, including those awaiting building control sign off

• 750 buildings (14%) have started remediation

• 2,877 buildings (52%) have not started remediation

Since the end of July 2025:

• The department is monitoring the remediation progress of 340 more buildings, largely due to developers identifying more buildings with  unsafe cladding in the latest time period. More information is available in the Developer-Led Remediation section of the data release.

• 175 more buildings are known to have started or completed remediation, and 147 more buildings are known to have completed remediation. The majority of this increase is due to  registered providers of social housing  reporting in the latest time period  an increase in  buildings  which  have started or completed remediation. More information is available in the Social Housing Sector section of the data release.

Since the end of August 2024:

• The department is monitoring the remediation progress of 783 more buildings, largely due to more buildings being identified with unsafe cladding in the CSS and reported by developers and social housing registered providers.

• 300 more buildings are known to have started or completed remediation, of which 535  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 113,000 dwellings are in buildings that have completed remediation, and an estimated 48,000 additional dwellings are in buildings that have started remediation. An estimated 134,000 dwellings are in buildings that have not started remediation.

Figure 3: Progress of remediating unsafe cladding differs across the programmes due to the differing maturity of the schemes.

Overall remediation by height

Figure 4: 58% of the 18m+ buildings the department is monitoring the remediation progress of have started or completed remediation on unsafe cladding, compared to 36% of 11-18m buildings.

Overall remediation by tenure

Figure 5: 47% of the social buildings the department is monitoring the remediation progress of have started or completed remediation on unsafe cladding, compared to 48% 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 6: 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, 31 August 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 31 August 2025 and shows a monthly update from the previous publication.

Figure 7: 97% of the 511 identified ACM clad high-rise buildings have started or completed remediation, with 95% having had their ACM cladding removed and 90% having completed remediation.

Table 4: Remediation status of buildings with ACM cladding systems unlikely to meet Building Regulations, 31 August 2025

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Completed Remediation	445	87%	445	87%
Remediation complete awaiting building control signoff	17	3%	462	90%
Remediation started - cladding removed	23	5%	485	95%
Remediation started	12	2%	497	97%
Remediation plans in place	10	2%	507	99%
Intent to remediate	1	<1%	508	99%
Remediation plan unclear	3	1%	511	100%
Total	511	100%	511	100%

ACM remediation: key statistics

As of 31 August 2025, the department has identified 511 high-rise residential and publicly owned buildings identified with ACM cladding systems unlikely to meet Building Regulations, no change since the end of July.

• 462 buildings (90% of all buildings) have completed ACM remediation – an increase of two since the end of July. Of these, 445 buildings (87% of all buildings) have received building control sign off – an increase of eight since the end of July.

• 497 buildings (97% of all buildings) have started or completed ACM remediation – no change since the end of July. Of these, 485 buildings (95% of all buildings) have removed ACM cladding – no change since the end of July.

There are an estimated 28,600-31,800 dwellings in private and social sector buildings that have completed remediation, and a further 3,300-3,500 dwellings in occupied private and social sector buildings that have yet to be remediated.

Driving ACM remediation forward

There are 14 buildings yet to start ACM remediation (3% of all buildings) - no change since the end of July. One building is vacant so does not pose a risk to resident safety.

Table 5: Enforcement action and forecast start dates for occupied high-rise buildings yet to start ACM remediation, 31 August 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 September 2025
Total	6	3	9	0

Of the 13 high-rise occupied buildings yet to start ACM remediation:

• One building is forecast to start works by the end of December 2025.

• An additional eight buildings are forecast to start works by the end of 2026, and five of these have had local authority enforcement action taken against them.

• One building without a forecast start date has had local authority enforcement action taken against it.

• Of the remaining three buildings, one has been determined as in scope of the ACM monitoring programme in 2024, and the other two 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 8: 97% of buildings are forecast to have started or completed ACM remediation works by the end of September 2025.

ACM remediation progress by year of identification

Figure 9: 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, 30 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, 11 buildings were identified in 2024 and five buildings were identified in 2025.

Table 6: Buildings with unsafe ACM cladding by year of identification, 31 August 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	11	506
2025	5	511
Total	511	511

ACM remediation by sector

Figure 10: 99% of the 163 social sector residential buildings in the ACM programme have started or completed remediation, compared to 96% of the 246 private sector residential buildings.

Building Safety Fund

Information in this section is correct as at 31 August 2025 and shows a monthly update from the previous publication.

Figure 11: 70% of buildings proceeding with an application for funding in the BSF have started or completed remediation, with 56% having completed remediation.

Table 7: Remediation status of buildings within the Building Safety Fund, 31 August 2025

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	309	40%	309	40%
Remediation complete: awaiting building control sign-off	121	16%	430	56%
Remediation started	115	15%	545	70%
Remediation plans in place	165	21%	710	92%
Intent to remediate	64	8%	774	100%
Total	774	100%	774	100%

BSF remediation: key statistics

As at 31 August 2025, 774 buildings were assessed as eligible and are proceeding with an application for funding from the Building Safety Fund. The remaining 2,926 buildings registered with the fund are either ineligible (1,115), withdrawn (1,611), in review or have given insufficient evidence (6), have transferred to the Cladding Safety Scheme (182) , or have been retained by the Cladding Safety Scheme (12) .

Of the 2,926 buildings that registered with the Building Safety Fund and are not currently proceeding with an application for funding, 456 buildings which were assessed as eligible have been transferred to developers.

As at 31 August 2025, 182 buildings have been transferred to the Cladding Safety Scheme for their remediation and are progressing through the CSS fund, no change since  the end of July . Of these, 179 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 774 buildings proceeding with an application for funding in the Building Safety Fund:

• 176 buildings (2 3 %) are remaining in the fund with developers set to reimburse the cost of remediation.

• Seven buildings (1%) are anticipated to be transferred to developers.

Of the 774 buildings proceeding with an application for funding, 190 buildings have been assessed with a Fire Risk Appraisal for External Walls (FRAEW), and 584 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 31 August 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 774 buildings proceeding with an application for funding, 545 buildings (70%) have either started or completed remediation works – no change since the end of July.

Of the 545 buildings that have started or completed remediation as at 31 August 2025:

• 115 buildings (15% of all buildings) have started remediation.

• 430 buildings (56% of all buildings) have completed remediation – an increase of six since the end of July. Of these, 309 buildings (40% of all buildings) have received building control sign off.

There are 229 eligible buildings proceeding with an application for funding that have not started remediation, of which:

• 165 (21% of all buildings) have remediation plans in place.

• 64 (8% of all buildings) have reported an intent to remediate.

There are an estimated 65,000 dwellings in buildings that are eligible and proceeding with an application for funding in the BSF.

BSF remediation progress over time

Figure 12: 28 more buildings proceeding with an application for funding in the BSF have started or completed remediation since the end of August 2024

Since the end of August 2024:

• 31 fewer eligible buildings are proceeding with an application for funding from the Building Safety Fund.

• 28 more eligible buildings have started or completed remediation, and 104 more eligible buildings have completed remediation.

BSF remediation by tenure

Figure 13: 92% of social sector buildings in the BSF, including buildings with a financial viability claim, have started or completed remediation compared to 66% of private sector buildings.

Cladding Safety Scheme

Information in this section is correct as at 31 August 2025 and shows a monthly update from the previous publication.

Figure 14: There are 4,667 buildings at different stages of the Cladding Safety Scheme, including 321 buildings with live applications and 806 eligible buildings, of which 155 buildings have started or completed works, with 53 having completed works.

Table 8: Remediation status for buildings within the Cladding Safety Scheme, 31 August 2025

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	53	7%	53	7%
Works started	102	13%	155	19%
In programme	651	81%	806	100%
Total	806	100%	806	100%

Cladding Safety Scheme: key statistics

As at the end of August 2025, there were 4,667 buildings in the different stages of the Cladding Safety Scheme (806 eligible buildings and 3,861 pre-eligible buildings). Of the 3,861 pre-eligible buildings:

• 3,540 buildings are in the pre-application stage.

• 321 buildings have a live application and are progressing through the eligibility stages.

There are 806 eligible buildings as at the end of August 2025, an increase of 24 since the end of July. None of the newly eligible buildings this month have been transferred from the BSF. In total, 170 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 806 eligible buildings:

• 779 buildings (97% of eligible buildings) have signed Grant Funding Agreements (GFA) - an increase of 68 since the end of July.

• Of these, 587 buildings (73% of all eligible buildings) have received a pre-tender support payment – an increase of 49 since the end of July.

• 155 buildings (19% of all eligible buildings) have started or completed remediation works on site – an increase of 13 since the end of July.

• Of these, 53 buildings (7% of all eligible buildings) have completed remediation works on site, including those awaiting building control sign-off – an increase of four since the end of July.

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

Height breakdown

Figure 15: 26% of eligible 11-18m buildings in the CSS have started or completed remediation, compared to 8% of eligible 18m+ buildings.

Tenure breakdown

Figure 16: 18% of eligible social sector buildings in the CSS have started or completed remediation, compared to 20% of eligible private sector buildings.

Developer-led remediation

Information in this section received by developers is correct as at 31 July 2025. Information in this section received from other programmes that relate to developer-led remediation (where cladding remediation is being carried out in a government funded remediation programme and the developer will subsequently pay for the works) is correct as at 31 August 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 17: 44% of buildings in the developer remediation contract have either started or completed remediation works on life-critical fire safety risks, with 23% having completed remediation works.

Table 9: Remediation status of buildings requiring works under the developer remediation contract, 31 August 2025. Percentages may not sum to 100% due to rounding.

Remediation Stage	Number of buildings	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	438	18%	438	18%
Remediation complete – awaiting building control sign-off	99	4%	537	23 %
Remediation started	497	21%	1034	44 %
Remediation not started – plans in place	378	16%	1412	59%
Remediation not started – no plans in place	965	41%	2377	100%
Total	2377	100%	2377	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 31 August 2025, 53 developers have signed the developer remediation contract. There are 4,655 buildings covered by the developer remediation contract. Of these,  2,377 buildings have been identified as having life-critical fire safety defects that developers are obligated to remediate or pay to remediate – an increase of 351 since the July data release. This increase is due to new determinations made by developers which identified life critical fire safety defects over the last quarter, and in the lead up to the Joint Plan stretch target where 39 developers committed to determine all buildings by the end of July 2025.

Of the 2,377 buildings identified as having life-critical fire safety risks:

• 537 (23%) are reported to have completed remediation – an increase of 21 since the July data release. Of the 537 buildings that are reported to have completed remediation, 438 buildings (18% of all buildings with defects) are reported to have received building control sign-off.

• 1,034 (44%) are reported to have started or completed remediation – an increase of 37 since the July data release.

• 378 (16%) are reported to have not started remediation but have plans in place – an increase of six since the July data release.

• 965 buildings (41%) have not started and have no plans in place – an increase of 308 since the July data release. This increase is due to the recent determinations made by developers where life  critical  fire defects were found.

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 2,377 buildings identified as requiring remediation have an estimated cost of remediation of around £4.7 billion. This is an increase of £0.6bn since reported in the July data release. This increase is due to more buildings being found with life-critical fire safety defects. 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  reported cost by developers by height band of building.

There are an estimated 148,000 dwellings in buildings with defects that developers are committed to remediate. Of these, there are an estimated 69,000 dwellings in buildings that are reported as having either started or completed remediation works.

Based on start and completion dates reported by developers, 559 buildings which have not yet started are reportedly expected to start works between 1 August 2025 and 31 July 2026, and 347 buildings which have not yet completed are reportedly expected to complete their remediation between 1 August 2025 and 31 July 2026.

445 buildings have transferred from the Building Safety Fund to developers, a decrease of one since the July data release:

• 58 (13%) have completed remediation – an increase of two since the July data release. Of these 58, 44 buildings (10% of all buildings) are reported to have received building control sign-off.

• 191 (43%) have started or completed remediation – an increase of 10 since the July data release.

• 106 (24%) are reported to have not started remediation but have plans in place – a decrease of six since the July data release.

• 79  (18%) are reported to have not started remediation and have no plans in place – an increase of  8 since the July data release.

• 69 (16%) have not been identified by developers as having life-critical fire-safety defects – a decrease of 13 since the July data release.

The 445 buildings in the developer remediation contract differs from the 456 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 18: 52% of the 18m+ buildings have started or completed remediation, compared to 36% 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 1,763 buildings which developers have reported as having unsafe cladding – an increase of 236 since the July data release. This increase is due to new determinations made by developers over the last quarter, which have identified life critical fire safety defects. Of these:

• 463 (26%) are reported to have completed remediation – an increase of 15 since the July data release. Of the 463 buildings that are reported to have completed remediation, 378 buildings (21% of all buildings with defects) are reported to have received building control sign-off.

• 864 (49%) are reported to have started or completed remediation –  an increase of 40 since the July data release.

• 323 (18%) are reported to have not started remediation but have plans in place – a decrease of two since the July data release.

• 576 (33%) are reported to have not started remediation but have plans in place – an increase of 198 since the July data release. This increase is due to the recent determinations made by developers where cladding defects were found.

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 2,246 buildings require life-critical fire safety remediation, which will be directly remediated by the developer, an increase of 354 since the July data release. This increase is due to new determinations made by developers over the last quarter, which have identified life  critical fire safety defects.

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 2,246 buildings being directly remediated by the developer:

• 460 buildings (20%) have completed remediation, an increase of 20 since the July data release. Of these, 375 buildings (17% of all buildings with defects) are reported to have received building control sign-off.

• 921 buildings (41%) have started or completed remediation, an increase of  39  since the July data release.

• 377 buildings (17%) have not started remediation but have a plan in place, an increase of five since the July data release.

• 948 buildings (42%) have not started and have no plans in place, an increase of 310 since the July 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. From August 2025 these  include an update against the commitments set out in joint plan to accelerate developer-led remediation and improve resident experience, which was published alongside the department’s 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

Information in this section received by Registered Providers of Social Housing is correct as at 30 June 2025. Two providers – London Borough of Brent, and Brighton and Hove City Council – reported they were not able to confidently provide further information on their 11m+ buildings as of 30 June 2025 while they were undertaking a review of their data. As a result, this data release includes only their total number of 11m+ buildings,  which they confirmed is correct  as  at 30 June  2025. No information is included for the assessment status, presence of life-critical fire safety defects related to the external wall system or remediation status of their buildings as at 30 June 2025. MHCLG and RSH are working with these two providers to support their reviews and future data submission. Information in this section received from other programmes that relate to social housing is correct as at 31 August  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’.

From June 2024, the estimates in this section of the release include buildings which have been reported by Registered Providers to have completed remediation since 14 June 2017 but prior to the most recent assessment. They also include social buildings the department has identified in other remediation programmes as having unsafe cladding and are also being monitored in those programmes.

Figure 19: 47% of social buildings identified to have unsafe cladding have started or completed remediation works, with 37% (of identified buildings) having completed remediation works.

Table 10: Remediation status of social buildings with unsafe cladding, 31 August 2025.

Remediation Stage	Number	Percentage	Cumulative Number	Cumulative Percentage
Remediation complete	1,052	36%	1,052	36%
Remediation complete - Awaiting building control sign-off	47	2%	1,099	37%
Remediation started	284	10%	1,383	47%
Remediation works planned	991	34%	2,374	80%
Remediation plans unclear from survey	579	20%	2,953	100%
Total	2,953	100%	2,953	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 the Responsible Entity for any 11m+ residential buildings.  Two providers – London Borough of Brent, and Brighton and Hove City Council – reported they were not able to confidently provide further information on their 11m+ buildings as of 30 June 2025 while they were undertaking a review of their data.

As at 31  August 2025, 2,953 social buildings 11 metres and over in height have been identified as having life-critical fire-safety cladding defects – an increase of 148 buildings since the July data release. The July data release included the 43 buildings that were reported by London Borough of Brent and Brighton and Hove City Council  as having been identified with life-critical fire-safety cladding defects as of 31 March 2025, while these buildings are excluded from this data release. Of the 2,953 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 for 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.

• 143 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 2,953 buildings identified to have unsafe cladding:

• 1,099 buildings (37%) are reported to have completed remediation – an increase of 146 buildings since reported in the July  data release. Of these, 1,052 buildings (36% of all buildings with defects) are reported to have received building control sign-off – an increase of 147 buildings since reported in the July  data release.

• 1,383 buildings (47%) buildings are reported to have started or completed remediation – an increase of 156 buildings since reported in the July data release. 212 buildings are reported to have started or completed remediation, when they previously were not reported to have started remediation (92 buildings), or have cladding defects (120 buildings). The status of 56 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 (31 buildings).

• 1,570 buildings (53%) are reported to have not yet started remediation – a decrease  of eight buildings since reported in the July data release. The July data release included 43 buildings that were reported by London Borough of Brent and Brighton and Hove City Council to have unsafe cladding and to have not started remediation as of 31 March 2025, while these buildings are  excluded from this data release.  

• 991 buildings (34%) buildings are reported to have not started remediation but have plans in place – a decrease of six buildings since reported in the July data release. The July data release included three buildings that were reported by London Borough of Brent to have unsafe cladding and to have not started remediation but have plans in place as of 31 March 2025, while these buildings are excluded from this data release.

Of the 1,570 buildings with cladding defects that have not yet started remediation, 1,183 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.

Height breakdown

Figure 20: 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 accompanying management information tables and social housing provider release document.

The estimates in this section excludes 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 have been found to have unsafe cladding since June 2017, an increase of 153 buildings 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 buildings 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 buildings 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%) are reported to have not started remediation but have plans in place – a decrease of four buildings since reported in the 31 March 2025 Social Housing Remediation data release. The 31 March 2025 Social Housing Remediation data release included three buildings that were reported by London Borough of Brent to have unsafe cladding and to have not started  remediation but have plans in place, while these buildings are excluded from the 30 June 2025 Social Housing Remediation data release.

Enforcement

Information in this section is correct as at 20 August 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 20 August 2025, enforcement action has been, or is being, taken under the Housing Act against 677 buildings over 11m with suspected unsafe cladding - an increase of 18 since the end of July. Of these, 165 buildings have had 168 inspections with Joint Inspection Team support – a decrease of one inspection since the end of July  due to improved data validation exercises.

Of the 677 buildings where a local authority had undertaken an inspection, we are aware that:

• 132 had a Category 1 HHSRS rating

• 476 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 677 buildings, we are aware that at least 217 improvement notices, 70 hazard awareness notices and 1 prohibition order have been served to date. Some buildings may have received multiple notices. We understand that 53 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,

• 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, 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, 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 25 September 2025, the Regulator of Social Housing published findings from the Fire Safety Remediation Survey (FRS) for buildings 11 metres and over in height as at 30 June 2025, which opened to all landlords on 23 June 2025 and closed on 1 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 17 December 2024, MHCLG published data on cladding remediation unit costs, providing data on costs per square metre of cladding remediated for high-rise non-ACM buildings, including analysis by cladding area and cost categories.

Technical note

Please see the accompanying technical notes document document for further details.