How Shared Ownership Schemes Work and What They Cost

What shared ownership is and how it differs from buying outright

Shared ownership is a scheme where you buy a percentage stake in a property — typically between 25% and 75% — and pay rent to a housing association for the part you don't own. You take out a mortgage only on the portion you buy, not the full property price. The housing association retains ownership of their share and collects rent from you each month.

This structure means your upfront costs are lower than a traditional purchase. If a property costs £200,000 and you buy a 50% share, you need a mortgage for £100,000 rather than £200,000, which reduces both the deposit you need and the monthly mortgage payment. The rent you pay on the remaining 50% is typically lower than market rent for the same property, because housing associations are non-profit organisations.

The trade-off is that you do not own the building outright. You own a share of it, and the housing association owns the rest. You can sell your share later, but only to someone the housing association approves, and you cannot rent the property to tenants without permission. Some schemes allow you to increase your ownership stake over time through a process called staircasing, though this is not may provide in every scheme.

Key Takeaways

• Shared ownership requires a mortgage on only the percentage you buy, so your deposit and monthly payment are lower than a full purchase of the same property.
• You pay rent to the housing association on the share you do not own, and this rent can increase over time, usually in line with inflation or a set percentage.
• You are responsible for all maintenance, repairs, buildings insurance, and council tax, just as you would be in a standard home purchase.
• Selling your share is possible but restricted — you can only sell to buyers the housing association approves, and the process takes longer than a standard property sale.
• Staircasing lets you buy additional shares in your property over time, but not all schemes offer this option and there are costs involved each time you staircase.

Costs you pay: mortgage, rent, and ongoing expenses

When you enter a shared ownership scheme, you pay three separate costs. First is the mortgage on your share. If you own 40% of a £250,000 property, you borrow £100,000. Mortgage rates and terms are the same as a standard mortgage — you shop around with lenders, and most require a deposit of at least 5% to 10% of the amount you are borrowing.

Second is the rent on the housing association's share. This is typically 2% to 3% of the value of their remaining stake, charged annually. On a £250,000 property where the association owns 60%, you might pay £3,750 to £5,625 per year (around £312 to £469 per month). This rent is not fixed — most schemes allow the housing association to increase it annually, often by the Retail Price Index (RPI) or a percentage set in your lease, typically between 0.5% and 3% per year. Check your lease to see how rent increases are calculated.

Third are all the costs of ownership: buildings insurance, council tax, maintenance, repairs, and ground rent if applicable. These are your responsibility, not the housing association's. If the roof leaks or the boiler breaks, you pay for it. If you have a mortgage, your lender will require buildings insurance before they release funds. Budget for these costs the same way you would for any property you owned outright.

Some schemes also charge a service charge for communal areas, maintenance of the building exterior, or management fees. This varies by property and scheme — ask the housing association for a breakdown before you commit.

Deposit requirements and mortgage lending for shared ownership

Most lenders will offer a mortgage on a shared ownership property, but not all. You need to find a lender who specialises in shared ownership mortgages — your bank or standard mortgage broker may not. The deposit requirement is usually 5% to 10% of the share price you are buying, not 5% to 10% of the full property value. If you are buying a 50% share of a £300,000 property (£150,000), a 5% deposit is £7,500, not £15,000.

Lenders assess shared ownership mortgages differently from standard mortgages because the property is not fully yours. They may require a larger deposit (up to 15%) or charge a slightly higher interest rate. Some lenders have a minimum share size — they will not lend on anything below 25% or 30% ownership. Others have a maximum — they will not lend if you own more than 75%. Check with the lender before you explore.

Your ability to borrow is based on your income and credit history, as with any mortgage. Lenders typically allow you to borrow 4 to 4.5 times your annual salary. The rent you pay on the housing association's share counts as an outgoing when the lender calculates how much you can afford, so it reduces the amount they will lend you.

Staircasing: buying more of your property over time

Staircasing is the option to buy additional shares in your property after you have owned it for a period. Not all schemes offer it — check your lease or ask the housing association before you buy. If it is available, you can typically staircase after owning for one to three years, though this varies.

When you staircase, you buy more of the property at its current market value, not the price you originally paid. If you bought 40% of a £250,000 property for £100,000 five years ago, and the property is now worth £300,000, buying another 10% costs £30,000 (10% of the current value), not £25,000. You take out a new mortgage for the additional share, and the rent you pay decreases because the housing association now owns a smaller percentage.

Each time you staircase, you pay a surveyor's fee (typically £200 to £500) and a legal fee (typically £150 to £400). The housing association may also charge an administration fee. These costs add up if you staircase multiple times. Some people staircase gradually toward full ownership; others buy one or two additional shares and stop.

Staircasing is not compulsory. You can stay at your original share percentage for as long as you own the property. However, if you want to sell, some buyers prefer to purchase a larger share, so having the option available can make your property easier to sell later.

Selling your share and restrictions on resale

When you want to sell, you cannot straightforward list the property on the open market. The housing association has the right of first refusal, meaning they can buy your share back at the market value before you sell to anyone else. This process typically takes four to eight weeks. If the housing association does not want to buy, you can then sell to an external buyer, but only someone the housing association approves.

The approval process exists because the housing association wants to may support the new buyer can afford the mortgage and rent. They will ask for proof of mortgage in principle and financial information from the buyer. This can make your property harder to sell than a standard property, because fewer buyers will pass the housing association's checks, and the process takes longer.

Your share is also subject to the terms of your lease. Most shared ownership leases are for 125 years, but some are shorter. A lease below 80 years can become difficult to mortgage or sell, because lenders become reluctant to lend on short leases. If your lease is running down, you may be able to extend it, but this involves negotiating with the housing association and paying a fee.

When you sell, you keep the proceeds from your share. If you bought 50% of a £250,000 property for £125,000 and it is now worth £300,000, your 50% share is worth £150,000. You receive that £150,000 when you sell (minus any outstanding mortgage, selling costs, and fees).

Who can enter a shared ownership scheme and where to find properties

Shared ownership schemes are run by housing associations across the UK, and may be able to access rules vary by scheme and region. Most schemes require you to be a first-time buyer or someone who has not owned a property in the last three years. Some schemes are open to existing homeowners in specific circumstances. Income limits also explore — these vary widely, but typically range from £40,000 to £80,000 per year depending on the region and property price. London schemes often have higher income limits because property prices are higher.

To find schemes in your area, visit Rightmove, Zoopla, or Help to Buy: Shared Ownership (the government's portal for schemes in England). In Scotland, use Open Market Shared Equity. In Wales, look for Homebuy schemes. In Northern Ireland, contact the Housing Executive. Each nation runs its own version of shared ownership with slightly different rules.

When you find a property you are interested in, contact the housing association directly. They will send you information about the scheme, the lease terms, the rent calculation, and whether staircasing is available. Read the lease carefully — this is the legal document that governs your rights and obligations, and it varies between schemes.

Comparing shared ownership to other routes into homeownership

Shared ownership is one option among several for people who cannot afford to buy outright. Help to Buy: Equity Loan (England only) lets you borrow up to 20% of the property price from the government interest-free for five years, then pay interest. You still need a 5% deposit and a mortgage for 75% of the price. This is different from shared ownership because you own 100% of the property from day one, but you owe money to the government.

Lifetime ISAs let you save up to £4,000 per year and receive a 25% government bonus (up to £1,000 per year) toward a first home purchase up to £450,000. You can save for up to ten years. This does not reduce the price of the property, but it increases the deposit you can afford.

A standard mortgage with a smaller deposit (5% to 10%) is also an option if you can find a lender willing to take the risk. Your monthly payment will be higher because you are borrowing more, and you will pay mortgage insurance, but you own the property outright from the start.

Shared ownership suits people who want to own a stake in a property now rather than save for a larger deposit, and who are comfortable with paying rent on the housing association's share. It does not suit people who want full ownership, who plan to stay in one place for only a few years, or who want to rent the property out later.

Frequently Asked Questions

Can I get a mortgage if I have bad credit or a low income?

Some lenders specialising in shared ownership mortgages will work with people who have imperfect credit, but you may face a higher interest rate or need a larger deposit. Income requirements vary by lender and scheme — some require a minimum of £25,000 per year, others £40,000 or more. Contact lenders directly to discuss your situation rather than assuming you will be rejected.

What happens if I cannot afford the rent or mortgage payments?

If you fall behind on your mortgage, the lender can repossess the property. If you fall behind on rent to the housing association, they can take legal action to evict you. Contact your lender or housing association when ready if you are struggling — they may offer payment holidays or restructuring options. Do not ignore the problem, as it will escalate quickly.

Can I rent out my shared ownership property?

Most shared ownership leases forbid renting the property to tenants without written permission from the housing association. Some associations will grant permission; others will not. Check your lease before you buy if you think you might want to let the property in future. Renting without permission can result in eviction.

What is the difference between shared ownership and a standard mortgage?

With shared ownership, you own a percentage and pay rent on the rest. With a standard mortgage, you own 100% from day one and pay only the mortgage (plus maintenance and insurance). Shared ownership requires a smaller deposit and lower monthly payment, but you never own the full property and selling is more restricted.

Can I staircase to 100% ownership?

Yes, if your scheme allows staircasing and you can afford it. You can buy additional shares over time until you own 100%. However, staircasing costs money each time (surveyor, legal, and administration fees), and the price of each additional share is based on the current market value, not what you originally paid. Some people staircase to 100%; others stop at 75% or 80%.