Shared Ownership Mortgages UK: How They Work
Shared ownership lets you buy a share of a property, usually 25-75%, and pay rent on the rest. This guide walks through who qualifies, how staircasing works, what it costs, and how to apply for a shared ownership mortgage in the UK.
If buying a home outright on the open market is out of reach, shared ownership gives you another way onto the property ladder. You buy a share of a property, usually between 25% and 75%, and pay a subsidised (below-market) rent on the rest to a housing association, the not-for-profit landlord that keeps the remaining share. Your mortgage and deposit are worked out on the share you buy, not the full property value, so the money you need up front is a lot lower than a standard purchase.
This guide covers how shared ownership works in the UK, who qualifies, and what staircasing means: the way you buy extra shares later until you own your home outright. It also sets out the real costs, from the rent on the housing association’s share to service charges and the fees worth budgeting for. If you are weighing it up, our borrowing calculator shows what your income could stretch to.
You might be a first-time buyer priced out of your local area, or someone who has owned before and can no longer afford to buy outright. Either way, shared ownership may fit. The advisers at Clearview work with housing associations and specialist lenders across the UK, and we can walk you through it from checking your eligibility to picking up the keys. Get in touch for free advice built around your situation.
Who qualifies for shared ownership?
Shared ownership is meant for households who cannot afford a suitable home on the open market. The main test is income: your household must earn £80,000 a year or less to qualify, or £90,000 or less if the home is in London.
You need to be at least 18. You can be a first-time buyer, a former homeowner who can no longer afford to buy, or someone who already part-owns a shared ownership home and wants to move. What you cannot do is already own another property when you buy.
Some groups go to the front of the queue: current council or housing association tenants, serving members of the armed forces and their families, and people who live or work nearby. Individual housing associations can add their own local rules on top, so check with the provider running the development you like.
Shared ownership is meant for households who cannot afford a suitable home on the open market. To qualify, your household income must be £80,000 a year or less, or £90,000 or less in London. You also need to be at least 18 and not already own another property when you buy.
It is a common myth that shared ownership is only for first-time buyers. Former homeowners who can no longer afford to buy outright can apply too, and so can existing shared owners who want to move.
Income requirements
- Household income must not exceed £80,000 per year (£90,000 in London)
- Income is assessed jointly for couples buying together
- Some housing associations apply stricter local income caps
- You must be able to demonstrate you cannot afford to buy on the open market
Who can apply
- First-time buyers who meet the income criteria
- Previous homeowners who can no longer afford to buy outright
- Existing shared owners looking to move to a new property
- Must be aged 18 or over and a UK resident
Priority groups
- Current local authority and housing association tenants
- Members of the armed forces, veterans, and bereaved spouses
- People who live or work in the local area of the development
- Key workers in some local authority areas
Affordability still matters
Sitting under the income cap does not mean a lender will approve you. They still run a full affordability assessment that looks at your income, your outgoings, any debts, and your credit history. Your mortgage payment and the rent on the housing association’s share have to be affordable together, not just one or the other.
Staircasing: buying more shares over time
Staircasing means buying extra shares in your home as time goes on. Each share you add raises how much of the property you own and lowers the rent you pay the housing association. You can keep going in stages until you own the whole thing at 100%.
With the new model lease brought in during 2021, you can buy shares in steps as small as 1% for the first 15 years. From then on the smallest step is 5%. Every time you staircase, the home is revalued at today’s market price, so what you pay for the next share reflects what the property is worth now, not what you first paid.
Reach 100% and you own the home outright, with no more rent going to the housing association. If it is a flat or sits within a managed development, service charges still apply.
Staircasing means buying extra shares in your home as time goes on. Each share you add raises how much of the property you own and lowers the rent you pay the housing association. You can keep going in stages until you own the whole thing at 100%.
With the new model lease brought in during 2021, you can buy shares in steps as small as 1% for the first 15 years. From then on the smallest step is 5%. Every time you staircase, the home is revalued at today’s market price, so what you pay for the next share reflects what the property is worth now, not what you first paid.
How staircasing works
- 01
Request a valuation
Get in touch with your housing association to start staircasing. They arrange an independent RICS valuation (a survey by a chartered surveyor) that sets the property’s current market value. You cover this valuation, usually £300 to £500.
- 02
Decide how much to buy
Decide how big a share to add. The 2021 lease lets you buy as little as 1% at a time in the first 15 years, then 5% at a minimum after that.
- 03
Arrange funding
Pay for the extra share from savings, by remortgaging the share you already hold, or with a further advance on your current mortgage. A mortgage adviser can help you weigh up which route costs you least.
- 04
Complete the legal process
A solicitor handles the legal transfer of the new share. Your rent is then recalculated downwards, because the housing association now owns less. Start to finish, this usually takes 8 to 12 weeks.
Staircasing gives shared owners a genuine path to full home ownership. Every additional share you buy reduces your rent bill and increases your equity in the property.
Costs involved in shared ownership
Each month you pay two main things: the mortgage on the share you own and rent on the share the housing association keeps. Depending on the property, you may also have service charges, ground rent and buildings insurance to cover.
Your deposit is based on the share you buy, not the full value of the home. Most shared ownership lenders ask for 5% to 10% of that share. On a 25% share of a £300,000 property, a 5% deposit comes to £3,750, well within reach compared with a standard purchase.
Set aside money for the one-off buying costs too: solicitor fees, a mortgage arrangement fee, the valuation fee and possibly stamp duty. In England, first-time buyers currently pay no stamp duty on the first £425,000 of a property’s value. As a shared ownership buyer you can also choose whether to pay stamp duty on the full property value up front or only on the share you are buying.
Each month you pay two main things: the mortgage on the share you own and rent on the share the housing association keeps. On top of that you may have service charges, ground rent (where it applies) and buildings insurance, depending on the property.
Your deposit is based on the share you buy, not the full value of the home. Most shared ownership lenders ask for 5% to 10% of that share. On a 25% share of a £300,000 property, a 5% deposit works out at £3,750, far less than the deposit a conventional purchase would need.
Example costs on a £300,000 home (25% share)
One-off purchasing costs to budget for
Legal and professional fees
- Solicitor and conveyancing fees: £1,000 to £1,800, since shared ownership conveyancing is a bit more involved than a standard purchase
- Valuation fee: £250 to £500, though some lenders throw in a free valuation on shared ownership products
Mortgage and tax costs
- Mortgage arrangement fee: £0 to £1,500 depending on the product, with some fee-free deals around
- [Stamp duty](/blog/stamp-duty-explained): first-time buyers pay nothing on the first £425,000, and you can choose to pay on the full value or just your share
Ongoing costs
- Buildings insurance: usually arranged through the housing association and included in the service charge for flats
- Service charges and ground rent may apply depending on the property type and lease terms
Work out your numbers
- Repayment CalculatorFree tool
Enter your share value, interest rate, and term to see what your monthly mortgage payments would be on a shared ownership property.
- Stamp Duty CalculatorFree tool
Check whether you will owe any stamp duty on your shared ownership purchase and compare the two payment options.
Advantages and disadvantages of shared ownership
Shared ownership genuinely helps buyers who are priced out of the open market, yet it has limits you should understand before you commit. It does not suit everyone, so weigh the good and the bad against your own situation.
The upsides: a smaller deposit and a smaller mortgage put a home within reach of people who would otherwise keep renting, you build equity from day one, and you can staircase towards full ownership when you are ready. The trade-offs: you still pay rent on the share you do not own, changes to the property may need permission, and selling can take longer than a normal open-market sale.
Shared ownership genuinely helps buyers who are priced out of the open market, but it has limits worth understanding before you commit. It does not suit everyone, so weigh the pros and cons carefully.
Shared ownership: pros vs cons
| Advantages | Disadvantages |
|---|---|
| Much lower deposit than buying outright (as little as £3,750 on a £300k home) | You pay both a mortgage and rent, so total monthly costs can be similar to renting |
| Smaller mortgage means lower monthly repayments than a full purchase | Rent on the housing association’s share can increase annually (usually by RPI + up to 0.5%) |
| You build equity from day one and benefit from property price growth on your share | Selling can be slower as the housing association has a nomination period to find a buyer first |
| Staircasing lets you increase ownership over time at your own pace | Fewer mortgage lenders offer shared ownership products compared to standard purchases |
| Rent on the housing association’s share is subsidised below market rates | Alterations and subletting usually require housing association permission |
| New 2021 lease includes a 10-year repairs period covered by the housing association | Staircasing costs include valuation and legal fees each time you buy more shares |
Watch out for rent increases
The rent on the housing association’s share is reviewed once a year and can rise by RPI (the Retail Price Index, a measure of inflation) plus up to 0.5%. Over many years that mounts up. Build likely rent increases into your longer-term budget, and think about staircasing earlier rather than later so less of your monthly cost is exposed to those rises.
How to apply for shared ownership
Applying for shared ownership means registering with a housing association, finding a home that suits you, and getting a shared ownership mortgage in place. It runs a little differently from a standard purchase, because the housing association has a hand in every stage.
Start by checking whether you qualify, either on the government’s Share to Buy website or straight with the housing associations working in your area. Once you are registered, you can browse the shared ownership homes on offer and register interest in developments that match your budget.
When you find a home, the housing association runs an affordability check to make sure you can handle the mortgage and rent together. From there you secure a mortgage offer from a lender that offers shared ownership mortgages, instruct a solicitor who knows shared ownership conveyancing, and complete the purchase.
Applying for shared ownership means registering with a housing association, finding a home that suits you, and getting a shared ownership mortgage in place. It works a little differently from a standard purchase, because the housing association is involved at every stage.
Step-by-step application process
- 01
1. Check your eligibility and register
Check you meet the income and eligibility rules, then register on Share to Buy or directly with housing associations near you. You will need to show proof of income, savings and where you currently live.
- 02
2. Find a property and reserve it
Look for shared ownership homes on Share to Buy, on housing association websites or through estate agents. When one fits, you pay a reservation fee, usually £250 to £500, to take it off the market.
- 03
3. Get a mortgage agreement in principle
Talk to a mortgage adviser who handles shared ownership day to day. Only some lenders offer these products, so a broker who knows which ones are keenest and most flexible for your circumstances really earns their place here.
- 04
4. Housing association affordability check
The housing association does its own check that you can afford the mortgage, rent and service charge together. It also decides what share size suits your income.
- 05
5. Instruct a solicitor and complete
Use a solicitor who is at home with shared ownership conveyancing. They read through the lease, run the searches and handle the legal transfer. A shared ownership lease is more involved than a standard one, so that experience counts.
- 06
6. Move in and plan ahead
Once the purchase completes, you are a shared owner. Set up direct debits for the mortgage and the rent, and start thinking about when you might staircase to own a bigger share.
Useful tools and guides
- Borrowing Amount CalculatorFree tool
See how much you could borrow for a shared ownership purchase based on your income and outgoings.
- LTV CalculatorFree tool
Work out your loan-to-value ratio on the share you are buying to understand which rate band you fall into.
- First-Time Buyer Guide
Our guide to buying your first home, from saving a deposit to the government schemes on offer and the steps of the purchase itself.
- What Is Loan-to-Value (LTV)?
Understand how your deposit size affects your LTV ratio and the mortgage rates available to you.
Frequently asked questions
- Regulator
- FCA register
- Updated
- 24 February 2026
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Interested in shared ownership
Our advisers arrange shared ownership mortgages and work with housing associations across the UK. We will help you find a lender that fits and stay with you through every step.