Shared ownership is a middle ground between renting and buying a home outright. Instead of paying for 100% of a property, you buy a share — often somewhere between 25% and 75% — and pay rent on the portion you do not own. It is designed for people who can afford some mortgage but not the full purchase price of a suitable home.
This guide explains how part-buy, part-rent works, what the ongoing costs are, who tends to qualify, and what to think about before you apply.
What Is Shared Ownership?
Shared ownership is a buying arrangement in which a housing provider keeps a share of the property and you buy the rest. You live in the home as the owner-occupier, not as a tenant. The arrangement is set out in a lease, which states how much you own, how much rent you pay, and what rules apply.
The main appeal is a smaller deposit and a smaller mortgage. You only borrow for the share you buy, which can make monthly costs more manageable than buying a home in full.
How Part-Buy, Part-Rent Works
A shared ownership home is split into two parts:
- The share you buy. You purchase a percentage of the home’s value, usually 25% to 75%. You pay for this with a mortgage, savings, or a mix of both.
- The share you rent. A housing provider owns the remaining percentage and charges you rent on it.
Because you own part of the property, you also take on the responsibilities of an owner. You insure and maintain the inside of the home, and you keep any increase in value on the share you own when you sell.
Rent on the Unbought Share
Rent is charged only on the percentage you do not own. It is often set below the open market rent for a similar home, though not always. The lease usually allows the rent to increase once a year, often in line with a published index or a formula written into the agreement. Always read the lease to see how and when rent can change.
Service Charges and Shared Costs
If the property is a flat or part of a larger building, you will usually pay a service charge. This covers cleaning and upkeep of shared areas such as hallways, lifts, gardens, and roofs, plus buildings insurance. Service charges vary widely and can rise, so ask for a record of past charges before you commit.
Typical Costs of a Shared Ownership Home
- A deposit, usually a percentage of the share you buy
- Mortgage repayments on your share
- Rent on the share owned by the provider
- Service charge, where one applies
- Council tax or local property tax
- Legal fees, valuation fees, and any reservation fee
- Ground rent, if the lease includes it
Add these together before you decide. A small mortgage can still come with meaningful rent and service charges on top.
Who Is Eligible?
Rules differ between programs, but common requirements include:
- Your household income is below a set limit
- You are a first-time buyer, or you do not already own another home
- You cannot afford to buy a suitable home outright in your area
- You can save a deposit and qualify for a mortgage on your share
Applicants usually need to register with the scheme before they can view or apply for homes.
Step-by-Step: How to Buy a Shared Ownership Home
- Check your eligibility. Review income limits and ownership rules for the scheme you are considering.
- Register your interest. Provide details of your household, income, and housing situation.
- Get a mortgage decision in principle. This shows sellers and providers that you can borrow the amount you need.
- View homes and apply. You may be asked to confirm you cannot afford to buy outright.
- Reserve the home. A reservation fee is usually paid at this stage and may be refunded if the sale does not go ahead.
- Appoint a solicitor and arrange a survey. Your solicitor reviews the lease carefully, including rent review terms.
- Complete and move in. Once the mortgage and legal work are finished, you receive the keys.
Staircasing: Buying More Shares Over Time
Many shared ownership leases let you buy additional shares later. This is often called staircasing. You might buy in fixed steps, such as 10% or 25% at a time, until you own the whole property.
Each time you staircase, you pay the current market value of the extra share, so the cost rises if the property has increased in value. You will also pay valuation and legal fees. Some leases limit how far you can staircase, so check the terms if owning 100% is your goal.
Advantages and Drawbacks
Advantages
- Lower deposit and mortgage than buying outright
- You build equity on the share you own
- Monthly costs may be lower than renting privately
- The option to buy more shares later
Drawbacks
- You pay both a mortgage and rent
- Rent and service charges can increase
- Selling can take longer than a standard sale
- Alterations and subletting are usually restricted
Things to Watch Out For
- Rising costs. Rent, service charges, and interest rates can all change.
- Lease restrictions. You may need permission to make improvements or keep pets.
- Resale rules. The provider often has a set period to find a buyer before you can advertise elsewhere.
- Staircasing fees. Each purchase of extra shares brings valuation and legal costs.
- Affordability checks. Lenders will assess the total monthly cost, not just the mortgage.
Selling a Shared Ownership Home
When you sell, you sell the share you own at its current market value. The provider usually has the right to find a buyer first, and buyers must meet the same eligibility rules. If no buyer is found within a set period, you may be allowed to market the home more widely. Your lease explains the exact process and any fees involved.
Frequently Asked Questions
Do I need a deposit?
Yes. Most buyers need a deposit, though it is usually smaller than for a full purchase because the mortgage is based on a share of the property.
Can I rent out a shared ownership home?
Usually not. These homes are meant to be your main residence, and subletting is normally banned or heavily restricted.
Can I ever own 100%?
Often yes, through staircasing. Some leases limit the maximum share you can buy, so confirm the terms before you proceed.
What happens if I fall behind on rent?
Rent is a legal obligation. Missed payments can lead to formal action, so contact the provider early if you are struggling.
Final Thoughts
Shared ownership splits a home into a share you buy and a share you rent. It lowers the upfront cost of buying, but it also adds rent and service charges to your monthly budget. The key is to check the lease terms, add up every cost, and confirm you can afford them if rates and charges rise.
If you are weighing up your options, it also helps to compare a shared ownership purchase with renting privately and with buying a smaller home outright, so you can see which route fits your budget and plans best.