Shared ownership guide
Shared Ownership Mortgages Explained
Understand how shared ownership mortgages work, what you buy, what you rent and how lenders assess affordability.
Shared ownership can help some buyers purchase with a smaller deposit, but rent, service charges and lender criteria still matter.
Useful reminder: Affordability needs to include the mortgage, rent, service charges and wider household costs.
Quick answer
How does a shared ownership mortgage work?
A shared ownership mortgage lets you buy a share of a property and pay rent on the remaining share, usually to a housing association or provider. You normally need a mortgage for the share you are buying, plus a deposit based on that share. Lenders will assess your income, outgoings, credit history, rent, service charges and other commitments before deciding how much they may lend. Shared ownership can reduce the upfront deposit needed compared with buying the whole property, but it is not suitable for everyone and the ongoing costs should be checked carefully.
Important: Your home may be repossessed if you do not keep up repayments on your mortgage.
You buy part of the property and pay rent on the share you do not own.
Your deposit is usually based on the share you buy, not the full property value.
Lenders consider your mortgage payment, rent, service charge and other commitments.
You may be able to buy more shares later, subject to scheme rules and affordability.
Key points
Key takeaways about shared ownership mortgages
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Main guide
What is shared ownership?
Shared ownership is a home ownership scheme where you buy a share of a property and pay rent on the remaining share. The unsold share is usually owned by a housing association, local authority or shared ownership provider.
For example, you might buy 25%, 40% or 50% of a property and pay rent on the rest. The exact starting share depends on the scheme, the property and your affordability.
You usually need a mortgage for the share you are buying, unless you are buying that share outright in cash. You also normally need a deposit, but the deposit is based on your share rather than the full market value of the property.
Why buyers consider shared ownership
Shared ownership can help some buyers get onto the property ladder when buying the whole property would be difficult. It may reduce the deposit needed and the initial mortgage size.
However, it is important to look beyond the deposit. You will usually have mortgage payments, rent, service charges and other property costs. These can increase over time, so affordability needs to be considered carefully.
Shared ownership is not simply “cheaper buying”. It is a specific type of purchase with its own rules, costs and restrictions.
Your home may be repossessed if you do not keep up repayments on your mortgage.

What do lenders check for shared ownership?
A shared ownership mortgage application involves many of the same checks as a standard mortgage, but lenders also need to consider the rent and scheme details. The lender will assess whether the mortgage is affordable alongside the rent on the unsold share and any service charges.
Lenders may review:
- your income and employment status
- regular outgoings and credit commitments
- your deposit amount and source
- your credit history
- the share you are buying
- the rent on the unsold share
- service charges and ground rent where applicable
- the lease terms and scheme rules
- whether the property and provider are acceptable
The housing association or provider may also carry out its own affordability assessment. This can sit alongside the lender’s checks, so it is possible to pass one assessment but still need further review from the other.
The property documents matter too. Lenders will usually want to understand the lease, resale rules, staircasing terms and any restrictions. If the lease or scheme structure does not meet lender criteria, mortgage options may be limited.
This is why it can help to get advice before reserving a shared ownership property.

This is a simplified illustration. Shares, rents, service charges and scheme rules can vary.
How much deposit do you need?
The deposit is usually based on the share you are buying, not the full property value. For example, if you buy a 40% share, your deposit is normally calculated against that 40% share.
This can make the upfront deposit lower than buying the whole property. However, the exact deposit needed depends on lender criteria, your circumstances and the property.
Some lenders may have minimum deposit requirements, and your credit profile or property type can affect the options available.
What is staircasing?
Staircasing means buying more shares in the property later. This can reduce the rent you pay on the unsold share and may eventually allow you to own more, or sometimes all, of the property.
Whether staircasing is possible, how often you can do it and what costs apply will depend on the lease and scheme rules. You may need a valuation, legal work and either savings or further borrowing to buy more shares.
Costs to consider
Shared ownership buyers need to think about more than the mortgage. Ongoing costs may include rent, service charges, buildings insurance, maintenance, leasehold costs and usual household bills.
Some costs may increase over time. Rent reviews and service charge changes can affect affordability. It is important to understand how these are calculated before committing.
Resale and restrictions
Shared ownership properties can have resale rules. You may need to offer the property back to the housing association or follow a particular sale process. Restrictions can vary, so the lease should be reviewed carefully.
There may also be eligibility rules around income, property use and whether you can own another property.
Common mistakes to avoid
A common mistake is focusing only on the lower deposit and ignoring total monthly costs. Another is assuming every lender offers shared ownership mortgages. Lender availability can be narrower, particularly if the lease or property has unusual features.
It is also important not to assume staircasing will definitely be affordable later. Your future income, property value, mortgage rates and lender criteria could all affect what is possible.
How The Mortgage Hive can help
The Mortgage Hive can help you understand shared ownership mortgage options before you commit to a property. We can review your income, deposit, credit profile, expected rent, service charges and the share you want to buy.
We can also help explain how lenders may view the scheme and what documents may be needed for the application.
Choosing a suitable lender
Not every lender offers shared ownership mortgages, and those that do may have different rules. Some may have restrictions around the minimum share, lease terms, rent level, staircasing clauses or property type.
Choosing a lender that fits the property and your circumstances can help avoid unnecessary delays.
Fee-free mortgage advice
The Mortgage Hive provides whole-of-market mortgage advice and does not charge a broker fee. We can explain your options clearly, help you prepare for the application and support you through the mortgage process.
What to do next
If you are considering shared ownership, gather the property details before applying. Useful information includes the share being sold, full market value, rent, service charge, lease length, provider details and any staircasing or resale rules.
Your home may be repossessed if you do not keep up repayments on your mortgage.
Useful questions to ask your adviser.
- Which lenders offer mortgages for this shared ownership property?
- How will the rent and service charge affect my affordability?
- What deposit do I need for the share I want to buy?
- Are there any lender concerns with the lease or provider?
- Can I staircase later, and what might that involve?
- What happens if rent or service charges increase?
- Are there resale restrictions I should understand before buying?
MORTGAGE-READY STEP
WHAT IS A DECISION IN PRINCIPLE?
A Decision in Principle, sometimes called an Agreement in Principle or Mortgage in Principle, is an initial indication from a lender of what they may be prepared to lend based on information provided at that stage.
It can help you understand a possible budget and show estate agents that you have started the mortgage process. It is not a full mortgage offer and can still change once the full application, documents, credit checks, valuation and underwriting are completed.
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We can help you explore options from a wide range of mainstream and specialist lenders, giving you a clearer view of what may be possible based on your circumstances.
Process map
How the mortgage advice and application process usually flows
This visual route map shows the usual stages from an initial conversation through to application, offer and completion.
We look at whether you are buying, remortgaging, moving home, investing or dealing with a more complex situation.
Income, outgoings, deposit or equity, credit history, property type and lender requirements are reviewed.
Suitable mainstream and specialist lenders are compared to see what may be possible based on your circumstances.
Documents are prepared, fees and repayments are checked, the application is submitted and lender questions are handled through to offer and completion.
WHY CLIENTS CHOOSE THE MORTGAGE HIVE
WHY CLIENTS CHOOSE THE MORTGAGE HIVE.
Mortgage decisions can feel confusing, especially when lender criteria, affordability and rates all need to be considered. The Mortgage Hive helps make the process clearer, with fee-free mortgage advice and access to a wide range of lenders.
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FAQs
Common shared ownership mortgage questions.
What is a shared ownership mortgage?
A shared ownership mortgage is used to buy a share of a property, while you pay rent on the remaining share. The mortgage is normally based on the percentage you buy, not the full property value. You still need to meet lender affordability and criteria.
Is shared ownership only for first-time buyers?
Shared ownership is often used by first-time buyers, but it may also be available to some previous homeowners who meet the scheme rules. Eligibility can depend on income, whether you own another property and the specific shared ownership scheme.
How much deposit do I need for shared ownership?
The deposit is usually based on the share you buy. For example, if you buy a 40% share, the deposit is normally calculated on that share rather than the full property value. The exact amount depends on lender criteria and your circumstances.
Does rent affect shared ownership mortgage affordability?
Yes. Lenders usually include the rent on the unsold share, service charges and other commitments when checking affordability. Even if the mortgage itself looks affordable, the total monthly cost needs to fit the lender’s assessment and your budget.
Can I buy more shares later?
This is known as staircasing. Many shared ownership schemes allow you to buy more shares later, but the rules, costs and minimum share increases can vary. You may need a valuation, legal work and further borrowing or savings to staircase.
Are shared ownership mortgages harder to get?
They can be more specialist because not every lender offers shared ownership mortgages. Lenders may also check the lease, provider, rent, service charge and staircasing rules. Getting advice early can help identify lenders that may accept the property and your circumstances.
Can The Mortgage Hive help with shared ownership mortgages?
Yes. The Mortgage Hive can help you understand shared ownership mortgage options, check affordability and review lender criteria. We do not charge a broker fee, and we can support you through the application process.
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Buying shared ownership?
Check your shared ownership mortgage options
Shared ownership can make buying more accessible for some buyers, but the rent, service charge, lease and lender criteria all matter. The Mortgage Hive can help you understand the numbers before you apply.
Important mortgage information
Your home may be repossessed if you do not keep up repayments on your mortgage. Mortgage approval is subject to status, affordability and lender criteria.
Interest rates, fees and criteria can change, and early repayment charges may apply. This guide is for general information only and is not personal financial advice.