Shared ownership is a government-backed scheme that makes homeownership accessible to people who cannot afford to buy outright. By purchasing a share of a home and renting the rest, you can get on the property ladder with a much smaller deposit than a traditional purchase.
How Shared Ownership Works
- Buy a share — you purchase between 25% and 75% of the property’s value and take out a mortgage on that share
- Pay rent — you pay subsidised rent to a housing association on the share you don’t own (typically 2.75% of their share per year)
- Staircase up — over time, you can buy additional shares until you eventually own 100%
Example on a £300,000 Property
| Component | Amount |
|---|---|
| Your share (40%) | £120,000 |
| Deposit (10% of your share) | £12,000 |
| Mortgage needed | £108,000 |
| Housing association share (60%) | £180,000 |
| Monthly rent (2.75% of £180,000 ÷ 12) | £413 |
Compare this to buying the full property outright, where you would need a £30,000 deposit (10%) and a £270,000 mortgage. Shared ownership reduces your deposit requirement by 60% and your mortgage by 60%.
Eligibility Criteria
To qualify for shared ownership in England, you must meet all of the following:
- Household income of £80,000 or less (£90,000 in London)
- Be a first-time buyer, a previous homeowner who can no longer afford to buy, or an existing shared owner looking to move
- Not currently own a property at the time of purchase
- Be able to demonstrate affordability for mortgage, rent, and service charges
- Be at least 18 years old
Priority is given to existing social housing tenants and military personnel. Active members of the Armed Forces qualify regardless of income.
Costs Breakdown
Monthly Costs
Your total monthly housing cost includes several components:
| Cost | Typical Amount (£300,000 property, 40% share) |
|---|---|
| Mortgage payment (£108,000, 25 years, 4.5%) | £600 |
| Rent (2.75% of HA share) | £413 |
| Service charge | £100–£250 |
| Ground rent | £0 (new builds from 2024) |
| Buildings insurance contribution | £20–£40 |
| Total monthly cost | £1,133–£1,303 |
Upfront Costs
| Cost | Typical Amount |
|---|---|
| Deposit | £12,000 (10% of share) |
| Solicitor fees | £1,000–£2,000 |
| Mortgage arrangement fee | £0–£1,500 |
| Survey | £300–£600 |
| Stamp duty | Usually £0 (see below) |
Stamp Duty
Since 2024, first-time buyers in England pay no stamp duty on properties up to £425,000. For shared ownership, you can choose to pay stamp duty on your initial share only, or elect to pay it on the full property value — deferring can save you money upfront but may cost more when you staircase.
Staircasing — Buying More Shares
Staircasing lets you buy additional shares in your property over time. Each time you staircase, you:
- Get a valuation — the property is valued at current market prices
- Buy an additional share — typically a minimum of 5% (reduced from 10% under new rules)
- Pay for the share — by extending your mortgage, using savings, or remortgaging
- Reduce your rent — rent decreases proportionally as your ownership share increases
Staircasing Example
| Stage | Your Share | Mortgage | Monthly Rent | Total Housing |
|---|---|---|---|---|
| Initial purchase | 40% (£120,000) | £108,000 | £413 | £1,013 |
| Staircase to 60% | 60% (£195,000)* | £183,000 | £290 | £1,300 |
| Staircase to 80% | 80% (£272,000)* | £260,000 | £145 | £1,583 |
| Staircase to 100% | 100% (£340,000)* | £328,000 | £0 | £1,814 |
*Assumes property has increased in value to £340,000
Important: Staircasing is based on current market value, not the price you originally paid. If property values have risen, buying additional shares costs more. Conversely, if values fall, additional shares are cheaper.
Advantages of Shared Ownership
- Lower deposit — 5–10% of your share, not the full property value
- Smaller mortgage — more likely to pass affordability checks
- Subsidised rent — typically 2.75% of the housing association’s share, usually below market rent
- Route to full ownership — staircase up over time as your circumstances improve
- New build quality — most shared ownership properties are new builds with warranties
- Stability — you have a long lease (typically 990 years on new builds) and cannot be asked to leave as long as you meet your obligations
Disadvantages and Risks
- Total cost — mortgage payments plus rent plus service charges can be higher than renting or buying outright
- Leasehold restrictions — you may face limits on pets, alterations, and subletting
- Service charges — can increase significantly over time, especially on new builds
- Staircasing costs — valuations (£200–£500 each), legal fees, and potential stamp duty each time
- Selling restrictions — the housing association has a nomination period to find a buyer before you can sell on the open market
- Negative equity risk — if property values fall, you may owe more on your share than it is worth
How to Apply
- Check eligibility at your local Help to Buy agent’s website
- Register and complete an application form
- Get a mortgage agreement in principle — speak to a broker experienced in shared ownership
- Find a property — search housing association listings and new build developments
- Financial assessment — the housing association will check your affordability
- Instruct a solicitor — choose one experienced in shared ownership (the lease is more complex than standard purchases)
- Complete — exchange and complete as with any property purchase
Shared ownership is not for everyone, but for those who cannot afford the deposit or mortgage for a full purchase, it provides a genuine and practical route to homeownership. Compare the costs carefully using our mortgage calculator and deposit calculator before committing.