First-time buyer mortgages explained

Buying your first home is exciting—but it can also feel complicated. A first-time buyer mortgage is simply a residential mortgage arranged for people who are buying property for the first time. The key difference is that some lenders and support options are designed to make the process more accessible, particularly where deposits and upfront costs are a challenge.

This guide explains the main moving parts of first-time buyer mortgages, from deposits and loan-to-value (LTV) to affordability checks, mortgage types, and the practical stages of the mortgage and purchase process.

What is a first-time buyer mortgage?

A first-time buyer mortgage works in the same fundamental way as other residential mortgages:

• You buy a property.
• You pay a deposit.
• The lender provides the mortgage for the remaining amount.
• You repay the loan over an agreed term, usually with monthly payments.

What can make first-time buyer mortgages different is that lenders may offer:

• Higher LTV options (so you can borrow a larger percentage of the property value)
• Product features that suit new buyers
• Access to certain government-backed support (where eligibility rules are met)

Are you a first-time buyer? (and why definitions matter)

In broad terms, you’re usually treated as a first-time buyer if you haven’t previously owned a property. However, the exact definition can vary depending on the scheme or benefit you’re trying to use.

If you’re buying with someone else, both parties may need to meet the relevant definition for certain support.

Because rules can be specific, it’s worth understanding how your circumstances are treated before assuming you qualify for a particular scheme.

Deposit and LTV: the starting point

Your deposit is the portion of the purchase price you pay upfront from your own funds.

Your LTV (loan-to-value) is the percentage of the property value you borrow.

How LTV is calculated

• LTV = (Mortgage amount ÷ Property value) × 100

So, for example:

• A 5% deposit typically means a 95% LTV mortgage.
• A 10% deposit typically means a 90% LTV mortgage.

Why deposit size affects your options

Deposit size can influence more than affordability—it can affect:

• Which mortgage products are available
• How lenders assess risk
• Whether certain support options are practical

In general, higher LTV lending can mean fewer product choices and different pricing, but availability depends on your overall application and the lender’s criteria.

Affordability checks: what lenders look at

Lenders don’t just consider whether you can pay the mortgage today—they assess whether it remains affordable over time.

Typical factors in affordability assessments

Most affordability checks consider:

• Income (including stability and how it’s earned)
• Monthly outgoings (existing credit commitments, childcare costs and other regular payments)
• Credit history (how you’ve managed borrowing)
• The mortgage payment based on the proposed product and term

Stress testing

Many lenders apply a form of stress testing, meaning they check affordability under less favourable conditions than the initial rate you may be offered. This helps ensure repayments could still be manageable if rates rise.

As a result, two borrowers with similar incomes can receive different outcomes depending on their outgoings, deposit size, and credit profile.

Mortgage types you’re likely to see

First-time buyers usually choose between different interest rate structures and repayment methods.

Fixed-rate mortgages

A fixed-rate mortgage sets the interest rate for a defined period (commonly 2 or 5 years). Repayments are generally more predictable during the fixed term, which can help with budgeting.

Tracker mortgages

A tracker mortgage links the interest rate to a reference rate (often associated with the Bank of England base rate). If the reference rate changes, your mortgage rate can move with it.

Repayment vs interest-only

• Repayment mortgages: your monthly payment covers interest and reduces the balance over time.
• Interest-only mortgages: your monthly payment typically covers interest only, with the capital due at the end of the term.

Interest-only lending is often more restricted and requires a credible plan for repaying the capital.

Government schemes and support (where available)

Some first-time buyer support is designed to reduce deposit pressure or help with upfront costs. Availability and eligibility can depend on factors such as where you’re buying and your personal circumstances.

Common examples include:

• Shared Ownership: you buy a share of the property and pay rent on the remainder. This can reduce the deposit and mortgage size compared with buying 100% outright.
• Lifetime ISA (LISA): a tax-efficient way to save towards a qualifying first home deposit, subject to rules.
• Stamp Duty relief (England): first-time buyers may qualify for stamp duty relief on eligible purchases, depending on purchase price and conditions.

Scheme rules can change, and eligibility can be detailed—so it’s important to check the latest requirements for the support you’re considering.

Costs to budget for beyond the deposit

The deposit is only one part of the financial picture. Typical costs around buying a home can include:

• Mortgage-related fees (such as arrangement fees, where applicable)
• Valuation fees (for the lender’s assessment)
• Survey costs (depending on the type of survey chosen)
• Solicitor and legal fees
• Stamp Duty (if payable, depending on the purchase price and any relief)
• Moving and setup costs

It’s also important to consider ongoing costs after completion, including buildings insurance (often required by lenders), council tax and utilities.

The mortgage and purchase timeline (high level)

Every purchase is different, but the journey often follows a similar sequence.

1. Review your finances Understand your deposit, monthly budget and existing commitments.

2. Prepare your documentation Lenders typically require evidence of income, identity and other information.

3. Make an offer on a property Once your offer is accepted, the purchase progresses.

4. Complete lender and property checks This may include a valuation and further checks depending on the lender.

5. Instruct a solicitor or conveyancer They handle the legal work, searches and contract process.

6. Receive the formal mortgage offer This sets out the conditions of the loan.

7. Exchange contracts At this stage, the transaction becomes legally binding.

8. Complete and move in The remaining funds are paid and you receive the keys.

Surveys: why they matter

Even if a lender carries out a valuation, you may still want a more detailed survey to understand the condition of the property.

Common survey approaches include:

• A basic condition-focused report (often suitable for newer properties or where risks are lower)
• A more detailed structural survey (often considered where the property is older or has potential risk factors)

A survey can help you make an informed decision and, where appropriate, negotiate on price if issues are identified.

Common questions first-time buyers ask

Can I get a mortgage with a small deposit?

Some lenders offer higher-LTV mortgages, but availability depends on your circumstances and affordability assessment.

Is there one “best” first-time buyer mortgage?

There isn’t a single best option for everyone. The most suitable mortgage depends on your deposit, income, outgoings, credit profile and how long you plan to stay in the property.

How long does the process take?

Timelines vary based on document turnaround, lender processes, survey results and the legal work involved in the purchase.

Key takeaways

First-time buyer mortgages can be a practical route into home ownership, but they work best when you understand the fundamentals:

• Deposit and LTV influence the mortgage options you may be able to access.
• Affordability checks consider more than income, including outgoings and credit history.
• Mortgage types (fixed, tracker, repayment vs interest-only) affect predictability and risk.
• Budget for the full cost of buying — not just the deposit.
• The purchase timeline involves both mortgage steps and legal steps, which need to align.

If you’re planning your first purchase, focusing on affordability over the long term can help you move forward with clarity and confidence.