Shared ownership is a halfway house between renting and buying. You purchase a share of a property — typically between 25% and 75% — and pay subsidised rent on the portion you don't own. The idea is to make homeownership accessible to people who can't afford a full mortgage deposit or the monthly payments on a whole property.
How it works in practice
You buy your share from a housing association using a mortgage and deposit. Your deposit only needs to cover a percentage of your share, not the full property value. So on a £250,000 flat where you buy a 40% share (£100,000), a 5% deposit is £5,000 rather than £12,500.
On the remaining 60%, you pay rent to the housing association. The rent is typically set at 2.75% of the unsold share per year, below market rate. On our example, that's about £344 per month on top of your mortgage payment. You're also responsible for service charges and maintenance.
Eligibility
To qualify for shared ownership, you generally need to meet these criteria:
- Household income below £80,000 (£90,000 in London)
- You cannot afford to buy a suitable home on the open market
- You are a first-time buyer, or you used to own a home but can't afford one now, or you're an existing shared owner looking to move
- No outstanding credit issues that would prevent you getting a mortgage
Priority is often given to existing tenants of the housing association and to members of the armed forces. Each development may have additional local connection requirements.
Staircasing — buying more shares
Over time, you can buy additional shares in your property, a process called staircasing. Since April 2021, you can staircase in increments as small as 1% (previously the minimum was 10%). Each time you staircase, the share is valued at current market prices, so if the property has gone up in value, you'll pay more than the original price for the same percentage.
When you reach 100% ownership, you own the property outright and stop paying rent. You'll still need to pay service charges if it's a flat. The housing association may also charge an admin fee for each staircasing transaction, and you'll need a solicitor and a property valuation.
Costs to be aware of
Shared ownership comes with several layers of cost that catch people out:
- Mortgage payments on your share
- Rent on the housing association's share (usually increases annually by CPI + up to 1%)
- Service charges — can be substantial in new-build flats (£150-£300+ per month)
- Ground rent — many new shared ownership leases now have zero ground rent, following the Leasehold Reform Act
- Maintenance and repairs — as a shared owner, you're typically responsible for all internal repairs
Add all of these together before deciding whether shared ownership is genuinely more affordable than renting in your area.
Selling a shared ownership property
Selling is more complex than a standard property sale. The housing association typically has the right to find a buyer for your share within a set period (usually 8-12 weeks) before you can sell on the open market. If you own 100%, this restriction usually falls away.
Your selling price is based on an independent valuation, not what you think the property is worth. If the market has fallen since you bought, you could find your share is worth less than you paid — shared ownership doesn't protect you from negative equity.
Is shared ownership worth it?
It depends entirely on your local market. In areas where renting is very expensive and buying is out of reach, shared ownership can be a genuine stepping stone. But in areas where rent is reasonable and property prices are more accessible, a few more years of saving for a full deposit might work out cheaper in the long run. Run the numbers — total monthly costs of shared ownership versus renting versus saving for a larger deposit — before committing.