Residential Mortgage

Lenders calculate affordability on residential mortgages in two ways and lend the lower of the two: an income multiple, expressed as your loan to income (LTI) ratio, and an affordability assessment of your income against your commitments and living costs.

The LTI ratio is the mortgage amount divided by your annual income. For instance, if you want to borrow £200,000 and your income is £50,000 a year, your LTI ratio is 4 (200,000 ÷ 50,000).

In Mortgage Lane's experience 5 times income is the standard multiple, with multiples ranging up to 6 times for professionals and specialist products. On £50,000 a year that is £250,000, or up to £300,000 at 6 times, and each lender's affordability assessment decides the actual figure. Which multiple a lender uses depends on your income type.

The factors in the assessment are your total income, including base salary, bonuses, overtime and other sources such as rental or investment income; existing credit commitments such as loans and credit card balances, which reduce what you can borrow; and regular spending on bills, groceries and other living costs. Your credit history counts too. The interest rate sets the monthly payment, and the length of the term matters as well, since spreading repayments over a longer period lowers the monthly payment.

Yes, you can get a mortgage on a residential property near a commercial property. Buying a residential property close to a commercial establishment, such as a shop, a shopping centre or an industrial area, can bring some challenges, but it does not rule you out.

Be aware that some lenders and valuers are more cautious about a home in a commercial area. Their concerns are usually about kerb appeal, because a home next to a commercial building could be perceived as less attractive to potential buyers, and about resale demand, because the lender considers how easily the property would sell and what that means for its value.

Whether you're looking at a home near a shopping centre, an industrial area or any other commercial establishment, we look for lenders who understand the property's location and are willing to consider it, and we check their approach before an application is made so you know what it takes to secure a mortgage on it.

For a residential property mortgage it is possible to borrow with a deposit of as little as 5% of the purchase price, which can particularly help first-time buyers and others without a substantial amount of savings.

A 5% deposit means borrowing up to 95% of the property's value, a higher loan to value (LTV) mortgage. Higher LTV mortgages can come with higher interest rates because the lender takes more risk, and a larger deposit can increase the choice of lenders and products.

A flat with a short lease can still be mortgaged, but the years remaining on the lease limit both the lenders available and the mortgage term. Most flats are held on a leasehold tenure, and a shorter lease makes securing a mortgage harder. In our experience most lenders want at least 50 years to remain on the lease at the end of the mortgage term, and the specialist lenders we use accept from 35 years. The maximum term is the years left on the lease minus that end-of-term minimum, capped by the lender's maximum term.

Where a short leasehold is too short for a term mortgage, bridging finance with a statutory lease extension as the exit can be an option, followed by a remortgage once the lease has been extended. In England and Wales a leaseholder starts a statutory extension of a flat by serving a Section 42 notice on the freeholder, and since 31 January 2025 there is no two-year ownership requirement before doing so. As at September 2026 the extension adds 90 years at a peppercorn ground rent, for a premium set by valuation.

Extending the lease widens the choice of lenders and supports resale. We check the lease and the extension options before a lender is approached.

Yes, you may be able to get consent to let on your residential mortgage, but do not assume it will be granted. Consent to let is your lender's agreement to you renting out the property under your existing residential mortgage, usually sought when a homeowner needs to let the home for a while, for example after relocating for work.

Lenders decide case by case under their own policies, and it is not an automatic entitlement. Some charge a fee or a higher interest rate for it, because a let property is a different risk from an owner-occupied one, and some will not give consent at all. For a long-term let, a buy to let mortgage may be the right product instead. Whether you're considering letting out your property for a short period or looking at longer-term options, Mortgage Lane can talk you through them.

Yes, you can overpay on your residential property mortgage, but the terms vary between lenders. A mortgage can allow overpayments without a penalty up to a yearly allowance, and the allowance is set in each product's terms. Overpaying reduces the balance faster and can save interest over the long term.

Overpayments above the allowance can carry an early repayment charge, especially during a fixed rate or discounted rate period, because the lender loses the interest it expected to earn.

We can check the overpayment terms and any early repayment charge before you choose a product, based on your financial situation and how much flexibility you want for regular overpayments or occasional lump sums.

Yes, you can get a residential property mortgage on a home near powerlines or a power station, but lenders' views differ.

Tell your mortgage broker about it early in the application. Being open about the location helps avoid a decline, and some lenders may reduce the loan to value (LTV) ratio they will offer if the proximity to powerlines only comes to light at the valuation.

Some lenders are willing to consider financing properties near powerlines within their normal criteria. Others are more cautious, mainly because of the possible effect on value: homes close to powerlines can be seen as harder to resell, which affects the property's value as security for the loan. We match these cases to lenders whose approach fits the property before an application goes in.

Yes, an interest-only residential mortgage is possible. Your monthly payments cover only the interest, not the capital borrowed, so the full loan stays the same through the term and is repaid at the end from a repayment strategy, sometimes called a repayment vehicle, that the lender accepts. Our interest only residential mortgages page explains the criteria in full.

The maximum loan to value (LTV) for interest-only residential mortgages is set by each lender: on the cases we arrange it is usually 75%, and Halifax and Nationwide both publish a 75% interest-only maximum (checked 1 October 2026).

Where the repayment vehicle is the sale of the property, lenders require a minimum amount of equity, and some index it to the region. For example, Nationwide asks for at least £200,000 of equity, £250,000 in the outer South East and £300,000 in Greater London and the outer metropolitan area, and Halifax asks for at least £300,000 at up to 50% LTV (both checked 1 October 2026; each lender's rule can change).

Part and part mortgages combine interest-only and capital repayment, which lowers the monthly payment while reducing part of the balance over time. Nationwide, for example, allows up to 85% LTV overall with up to 75% on interest-only (checked 1 October 2026).

Common repayment vehicles include the sale of the property or downsizing, investment bonds and pension plans. We can explain which lenders' criteria fit your plan, whether that is full interest-only or part and part.

Yes. With an interest-only residential property mortgage your monthly payments cover only the interest, not the amount you borrowed, so the principal amount you borrowed is still owed at the end of the term and you need a clear repayment strategy for it.

You can make extra payments towards the capital during the term, but you still need a plan to repay the mortgage in full, for example from other investments or savings, or by remortgaging the property at the end of the term. Lenders check the strategy at least once during the term.

Some residential property mortgage lenders consider applicants with adverse credit, whether that is missed payments, County Court Judgments (CCJs), defaults or an Individual Voluntary Arrangement (IVA). If you have been discharged from bankruptcy, the time since discharge matters, and the choice of lenders tends to widen as more time passes. We look for the lender whose criteria fit your credit history and the rest of your circumstances.

We help clients with residential property mortgages in England, Wales, Scotland and Northern Ireland.

Yes. A mortgage on your own home is normally a regulated mortgage contract, and in the UK residential mortgages are regulated by the Financial Conduct Authority (FCA). The FCA sets rules for lenders and brokers that cover how mortgages are marketed and promoted, the advice customers receive, the affordability assessments lenders carry out and the way complaints are handled.

This regulation is there so that products suit the customer's needs and borrowers are treated fairly throughout. If you have a problem with your mortgage provider, you have the right to complain and seek redress. Mortgage Lane is an FCA authorised firm and adheres to these rules in the advice it gives.

Yes. Ex local authority flats are usually harder to mortgage than houses because they are typically leasehold, sit within a wider block or estate, and carry shared management and maintenance risks that do not apply to a freehold house.

Yes, depending on the lender. Some lenders list modern flat roof coverings such as felt, asphalt or GRP (glass reinforced plastic) among standard roof types. Others restrict them: some decline a home whose roof is mainly flat, and one residential lender limits the flat roof proportion on its highest loan to value lending. The lender and valuer look at the roof covering, its condition and how much of the roof is flat.

Yes, in some cases. Freehold flats are unusual, because most flats are leasehold, and some lenders restrict or decline lending on a freehold flat because of the title complexities, so the choice of lender is narrower. We check which lenders accept the arrangement before applying.