Buying more shares ('staircasing')

You can buy more shares in your home after you become the owner. This is known as ‘staircasing’. When you buy more shares, you’ll pay less rent. The amount of rent you pay will be based on the landlord’s share.

You can usually buy shares of 10% or more at any time. Some older leases only allow you to buy shares of 25% or more. Some newer leases will allow you to buy shares of 5% or more.

If you bought your home on or after 1 April 2021, you may also be able to buy shares of 1% each year for the first 15 years. Ask your landlord if this applies to you. You cannot buy shares of 2%, 3% or 4%.

Before you buy a shared ownership home, ask the landlord for the ‘key information document’ to check what share amounts you’ll be able to buy in the future.

Buying shares of 5% or more

You can usually buy additional shares at any time. For some homes though, you might need to wait for a certain amount of time after you buy the home. Check your lease to find out when you can buy additional shares and what shares you can buy.

The cost of your new share will depend on how much your home is worth when you want to buy the share.

You’ll need to pay for a valuation by a surveyor who is registered with the Royal Institution of Chartered Surveyors (RICS). Your landlord will let you know whether they’ll arrange the valuation or you need to arrange it yourself. Your landlord will tell you the price of the share after the valuation.

The landlord may charge an administration fee each time you buy a share of 5% or more. It’s set by the landlord and can vary from around £150 to around £500.

If you decide to buy more shares, you must buy them within 3 months of the valuation date or the home will need to be revalued.

Valuations and home improvements

If you have made home improvements which affect the value of your home, the valuation must show 2 amounts:

  • the current market value - this is the home’s value including any increase because of home improvements
  • the unimproved value - this is the home’s value ignoring any home improvements carried out

If you have your landlord’s written permission to carry out the home improvements, the price of additional shares is based on the unimproved value.

If you did not get your landlord’s written permission, the price of the additional shares is based on the current market value. This price is likely to be higher.

Buying shares of 1%

If you bought your home on or after 1 April 2021, you may be able to buy shares of 1%. Check the key information document for the home to see if you can buy 1% shares.

If eligible, you can buy a 1% share each year for the first 15 years that you own the home. You cannot buy shares of 2%, 3% or 4%.

The price of a 1% share will be based on the original price of your home, increased or decreased in line with the House Price Index (HPI).

Your landlord will give you a HPI valuation at least once a year or whenever you ask to buy a 1% share.

You or your landlord can choose to use a Royal Institution of Chartered Surveyors (RICS) valuation instead of HPI. Whoever asks for the RICS valuation must pay for it. The most recent RICS valuation will be used as the basis for future HPI valuations.

You cannot roll over unused options to buy 1% shares to future years.

The landlord will not charge an administration fee when you buy a 1% share.

Maximum share you can own

​​For most shared ownership homes, the maximum share you can own is 100%. There are some exceptions.

In some places, called ‘designated protected areas’, you may only be able to buy a share of up to 80%. Check with the landlord.

If you buy an Older Persons Shared Ownership (OPSO) home the maximum share you can own is 75%.

If you need legal advice when you buy a share, you must pay your own legal fees. If you borrow money to pay for additional shares, you will need a legal adviser. The landlord must pay their own legal fees when you buy more shares (staircase).