Joint mortgage with a friend for first-time buyers

Should first-time buyers buy with a friend using a joint mortgage?

Buying with someone you trust can make homeownership feel more achievable—especially when you’re trying to balance deposit savings, moving costs and the day-to-day realities of renting.

A joint mortgage with a friend is one route to buy together. It lets you share mortgage payments and household costs, while the lender assesses whether each applicant can afford the commitment.

This guide explains how joint mortgages work in practice, the key legal and financial considerations for friends, and the planning points that can help reduce uncertainty later.

What is a joint mortgage?

A joint mortgage is a mortgage taken out by two or more people. When you apply jointly, each borrower is treated as responsible for the mortgage repayments.

That means the decision isn’t only about whether the household can afford the payments—it’s also about whether each person on the application meets the lender’s affordability and risk checks.

Lenders typically consider factors such as:

• Income and employment (including whether income is regular)
• Credit history and existing financial commitments
• Outgoings (for example, other loans, credit cards and day-to-day spending)
• Deposit size and how it’s being used
• The property being purchased

Can first-time buyers get a joint mortgage with a friend?

Yes. Joint mortgages aren’t limited to couples. Friends can apply together as long as:

• each applicant meets the lender’s requirements, and
• the overall application is affordable based on the combined information provided.

For first-time buyers, buying with a friend can be helpful when:

• one person has a smaller deposit than they would need to buy alone
• combining incomes improves the lender’s view of affordability
• you want to buy sooner rather than waiting to save independently

Even when the plan feels straightforward, it’s important to remember that a joint mortgage is a shared financial commitment. If circumstances change, the mortgage remains in place.

How a joint mortgage works in practice

A joint mortgage is similar to other residential mortgages, but with more people involved.

In most cases:

• all applicants must agree to the mortgage terms
• all applicants are responsible for the mortgage repayments
• the lender assesses affordability using the information provided for each person

Because each borrower is financially linked to the mortgage, the application outcome can be affected by things like credit history, existing debts and employment stability across the whole group.

Ownership matters: how friends hold the property

When friends buy together, the legal ownership of the property is usually set out in the purchase documentation. Two common structures are:

Joint tenants

• ownership is typically treated as equal
• decisions about selling or remortgaging generally require agreement between the owners
• if one party dies, the other may automatically inherit the whole interest (subject to the legal structure and circumstances)

Tenants in common

• ownership shares can be different (for example, reflecting different deposit contributions)
• it can be easier to reflect unequal financial input at the outset
• shares can be dealt with according to the legal structure agreed at the time

Choosing between these structures is a legal decision, not a mortgage decision. Getting the ownership arrangement right from the start can help align the property with what you both intend.

Protecting your money: declarations of trust and agreements

When friends contribute different amounts—particularly deposits—it’s common to put formal paperwork in place to reduce uncertainty later.

A declaration of trust is often used to set out, in legal terms:

• who owns what share of the property
• how contributions are reflected
• how proceeds are intended to be handled if the property is sold

Some buyers also use written agreements to clarify practical expectations, such as how mortgage payments and bills will be split, and what happens if one person wants to leave the arrangement.

Clear documentation can’t prevent every future issue, but it can reduce misunderstandings if plans change.

Benefits of buying with a friend

A joint purchase can offer advantages, including:

• shared upfront costs (where deposit and buying costs are split)
• shared monthly payments and household expenses
• a potential affordability improvement if both incomes are considered by the lender
• shared responsibility for upkeep and day-to-day running of the home
• a more formal structure for expectations when ownership paperwork is completed properly

For many first-time buyers, the biggest benefit is often timing—buying together can reduce the pressure to save a full deposit alone.

Risks to understand before you apply

A joint mortgage can be a sensible plan, but it’s not a casual arrangement.

Key risks to consider include:

• repayment responsibility is shared: if one person can’t pay their share, the other may still need to cover the mortgage
• credit and financial behaviour can affect everyone: missed payments or financial problems can impact the mortgage position and future borrowing
• relationship dynamics can change: disagreements about money, moving plans or future goals can become more stressful when tied to a property

Before applying, it helps to discuss what might happen in different scenarios, such as job changes, illness, one person wanting to move out, or major repairs and ongoing costs.

How lenders assess affordability for joint borrowers

Lenders generally assess affordability based on the information provided for each applicant. That means:

• both people’s income and outgoings are relevant
• existing debts and commitments can reduce the amount a lender is willing to offer
• overall household affordability is considered alongside the mortgage payment

If one applicant has irregular income, significant debts, or limited credit history, it may affect the application outcome.

What to discuss with your friend before applying

A joint mortgage is as much about planning as it is about paperwork. Practical conversations can include:

• how you’ll split mortgage payments and household bills
• how you’ll handle missed payments or temporary financial difficulties
• whether you’ll review the arrangement if incomes change
• what happens if one person wants to leave the property or stop being on the mortgage
• how you’ll manage major costs (repairs, renovations and any service charges)

The aim isn’t to predict every problem—it’s to make sure both parties understand responsibilities and likely next steps.

Choosing the right property when buying together

For first-time buyers, it can help to think beyond the move-in date and consider resale and day-to-day practicality.

When friends buy together, factors that may affect future flexibility include:

• property type and general market demand
• condition and likely repair needs
• location and transport links
• whether the layout suits different living arrangements over time

While no one can guarantee how quickly a property will sell, choosing a broadly appealing home can reduce friction if you need to move later.

Alternatives to consider

Depending on your circumstances, you may also want to compare other ways to buy, such as:

• buying with family members
• buying with a partner
• buying solo and using a different approach to manage the deposit

A mortgage broker can help you understand which route best matches your long-term plans and how you want to share ownership and responsibilities.

Summary: is a joint mortgage with a friend right for you?

A joint mortgage with a friend can help first-time buyers buy sooner, share costs and potentially improve affordability by combining incomes.

However, it also creates shared responsibility for repayments and requires careful planning—particularly around ownership structure and the legal documentation that reflects each person’s contribution.

If you’re considering buying together, aligning expectations early is essential: how you’ll split costs, what happens if circumstances change, and how the property will be owned and protected.