--- title: "Lodger Mortgage" description: "How lodger mortgages work in the UK: which lenders allow lodgers, which accept lodger income towards affordability, lodger vs tenant rules, and Rent-a-Room tax." url: "https://mortgagelane.com/insights/lodger-mortgage" site: "Mortgage Lane" collection: "posts" date: "2026-04-13" author: "Seren Norton" category: "Insights" reviewed: "2026-09-11" reading_time: "13 min" byline: "Seren Norton" author_credentials: "CeMAP · FCA authorised firm" language: "en-GB" robots: "index,follow" --- # Lodger Mortgage How lodger mortgages work in the UK: which lenders allow lodgers, which accept lodger income towards affordability, lodger vs tenant rules, and Rent-a-Room tax. We assist homeowners with mortgages allowing lodgers within their property, some lender will also use their income towards affordability! [Lodger](https://mortgagelane.com/definitions?term=lodger) Residential Someone who rents accommodation in a home shared with the resident landlord. [Read the full definition of Lodger](https://mortgagelane.com/definitions?term=lodger) ## Lodger Mortgage Specialists Speak to a Mortgage Lane adviser about your options. ## In short Taking in a lodger is allowed by most residential lenders, but whether the rent counts towards affordability, and on what terms, varies from lender to lender and is worth settling before an application goes in. **A lodger mortgage is a residential mortgage that permits you to rent a room to a lodger while continuing to live in the property yourself.** Some lenders go further and count part of that lodger income towards affordability, which can increase how much you are able to borrow. Lender policy on lodgers varies widely. Lenders differ on whether lodger income can be used at all, how much of it counts, how the property must be occupied, and whether formal consent is required before a lodger moves in. Choosing a lender whose policy fits your situation is the decision that determines whether lodger income helps your application or is ignored entirely. Mortgage Lane advises first-time buyers, home movers, and remortgage applicants who want to take in a lodger or use lodger income to support affordability. ## What is a lodger mortgage? **A lodger mortgage is a type of residential mortgage that permits homeowners to rent out a room or part of their property to a lodger while still residing there.** A lodger mortgage differs from a buy-to-let mortgage because the whole property is not rented out and you continue to live there as your main residence. In some cases, lenders will factor lodger income into your mortgage application. "Lodger mortgage" is a description of how the property is used rather than a separate product name. In practice it is a standard residential mortgage placed with a lender whose criteria permit a lodger, and in some cases with a lender that will use lodger income in its affordability calculation. ## What is the difference between a lodger and a tenant? **A lodger lives in your home alongside you and does not have exclusive possession of any part of the property. A tenant has exclusive possession of the space they rent.** The distinction matters because it determines which mortgage, which legal framework, and which lender criteria apply to your situation. - A lodger lives in your home with you and shares common areas such as the kitchen and bathroom. - A tenant under an Assured Shorthold Tenancy (AST) has exclusive possession of the rented space and cannot be evicted without proper legal notice. - Lodgers are classed as excluded occupiers, which means lodgers have fewer legal rights than tenants under an AST. - Buy-to-let and House in Multiple Occupation (HMO) rules do not apply where you are renting to a lodger in your main home. ## Can I have a lodger with a residential mortgage? **For purchases, there are plenty of lenders that allow lodgers. For remortgages, whether you can take in a lodger depends on your existing mortgage terms and your lender's policy.** Many residential mortgage agreements do permit homeowners to take in a lodger, but you should verify your own terms with your lender before a lodger moves in, to avoid breaching your contract. Taking in a lodger may be treated by a lender as a change in the use of your property. Some lenders are flexible about this and others require explicit permission. Three points determine whether your situation works: - **Inform your lender.** Always tell your mortgage lender before renting out a room. Failing to do so may lead to complications with your insurance or a breach of your mortgage agreement. - **Check whether permission is formal.** Some lenders require formal written permission before you bring in a lodger. Others impose restrictions on the rental income, or limit the number of lodgers allowed. - **Check for income thresholds.** Homeowners with standard residential mortgages often find their agreements allow lodgers, provided certain conditions are met and the rental income does not exceed set thresholds. Different rules apply to buy-to-let and investment properties, where specific terms and conditions may apply and a specialist mortgage for room rentals may be needed. ## Does lodger income count towards mortgage affordability? **Lodger income can be used in a mortgage application to improve affordability, but only with lenders whose policy permits it, and usually only in part.** Lender policies differ widely. Some lenders allow a percentage of lodger income to be included in the affordability calculation, which can increase borrowing power. Others allow a lodger in the property but disregard the income entirely. That distinction, a lender that allows a lodger versus a lender that counts lodger income, is the single most useful thing to establish before you apply. ## Which mortgage lenders allow lodgers? **Not every lender that allows a lodger will also accept lodger income towards affordability, and the two policies should be checked separately.** Lenders known for allowing lodgers in the property include: - Nationwide - Santander - Barclays - Halifax - HSBC Lenders known for accepting a percentage of lodger income in affordability assessments include Dudley Building Society, Vernon Building Society, Together Money, and Norton. Whether a lender accepts lodger income is influenced by: - The rental amount charged - The type of property, for example a house or a flat - The lender's own criteria Each lender sets its own rules and criteria change, so confirm current policy with the lender or with a lodger mortgage broker before relying on it. ## Examples of lodger mortgage policies **The examples below show how differently three lenders treat the same arrangement.** - **Dudley Building Society.** Lodger income is capped at £7,500 per annum, aligning with the UK's Rent-a-Room Scheme. The property must be suitable for both the borrower and their lodger, with only one lodger allowed. Maximum Loan to Value (LTV) is 80%, and capital and interest repayment is required. - **Norton.** Accepts 75% of lodger income for affordability, provided there is evidence through an assured shorthold tenancy (AST) and three months of bank statements showing regular income deposits. - **Vernon Building Society.** Permits room rentals with conditions. 50% of lodger income is acceptable with three months of bank statements, and up to 100% where there is over 24 months of evidence. These are examples of published criteria at the time of writing and are not an exhaustive list. Lender criteria change. ## How lodger income can increase mortgage affordability **Lodger income can improve a mortgage application in two distinct ways: by increasing what a lender will lend, and by reducing what the mortgage costs you each month.** **Increasing borrowing capacity.** Where a lender accepts a percentage of lodger income, that income is considered alongside your salary in the affordability calculation. Higher assessed affordability means you may qualify for a larger mortgage. **Reducing monthly outlay.** For homeowners already repaying a mortgage, lodger income offsets monthly costs. If your mortgage payment is £1,200 per month and you receive £500 in lodger rent, your out-of-pocket mortgage cost drops to £700. **Adding income without additional work.** Taking in a lodger supplements household income without additional working hours, unlike overtime or a second job. ### How to use lodger income in a mortgage application 1. **Check your lender's policy.** Not all lenders accept lodger income, and some impose restrictions on the amount or the evidence required. 2. **Keep financial records.** Maintain records of lodger payments, such as bank statements, to demonstrate a stable income stream. Several lenders require three months of statements as a minimum and offer better treatment where you can evidence longer. 3. **Consider a formal agreement.** An AST is not required for a lodger, but a written lodger agreement adds credibility to the income source. 4. **Work with a mortgage broker.** A lodger mortgage broker can identify which lenders will factor lodger income into affordability, and on what terms. ## Do I need a tenancy agreement for a lodger? **No. You do not need an Assured Shorthold Tenancy (AST) to have a lodger in the UK when you have a mortgage.** Lodgers are legally different from tenants, and a lodger arrangement is typically covered by a licence to occupy rather than a tenancy agreement. A written lodger agreement is still worth having. A lodger agreement should set out the rent amount, payment dates, notice periods, house rules, and the conditions for ending the arrangement. Lenders and insurers may ask for proof of lodger income, such as bank statements, but generally do not require an AST. ## Lodger income and tax: the Rent-a-Room Scheme **Under the Rent-a-Room Scheme you can earn up to £7,500 per year tax-free from renting a furnished room in your main home.** You do not need an AST to qualify for the scheme. Two points are commonly missed: - The £7,500 is measured on gross receipts, not profit. It includes rent plus anything the lodger pays towards utilities or services. - Where the home is jointly owned and both owners receive the income, the allowance is £3,750 each rather than £7,500 each. Mortgage Lane always recommends that borrowers taking on a lodger obtain tax and legal advice from a qualified individual. ## Considerations before taking in a lodger - **Insurance.** Check that your home insurance covers lodgers. Many policies do not include lodgers by default, and your insurer expects to be informed. - **Tax.** Lodger income is subject to tax, though you may qualify for relief under the Rent-a-Room Scheme. - **Legal responsibilities.** As a live-in landlord you must provide a safe and habitable living environment and respect the lodger's rights. - **Privacy.** Sharing your home affects your day-to-day living arrangements, which is a practical consideration as much as a financial one. ## Lodger mortgage calculator A lodger mortgage calculator estimates potential lodger income, mortgage affordability, and borrowing power. Online calculators give rough estimates only. Because each lender applies its own percentage to lodger income and its own evidence requirements, a calculator cannot tell you what a specific lender will lend. ## How Mortgage Lane helps with lodger mortgages Mortgage Lane advises homeowners and buyers on which lenders permit lodgers, which lenders accept lodger income, and how each treats that income in affordability. We also advise on alternative routes that may produce greater affordability using existing lodger income. Our service covers first-time buyers, home movers, and remortgage applicants, with lender selection based on income profile, occupancy structure, and property type. > [!TIP] > ## Key Differences Between a Lodger and a Tenant > > 1. A lodger lives in your home with you and does not have exclusive possession of any part of the property. > 2. A tenant under an AST has exclusive possession of the rented space and cannot be evicted without proper legal notice. > 3. Lodgers are classed as excluded occupiers, meaning they have fewer legal rights than tenants under an AST. > [!TIP] > ## Mortgage Lender Considerations > > 1. Some lenders allow lodgers but limit how much lodger income can be considered for mortgage affordability. > 2. Some lenders may ask for proof of rental payments (e.g., bank statements), but not necessarily an AST. > 3. Buy-to-let and HMO rules do not apply if you’re just renting to a lodger in your main home. > [!TIP] > ## Considerations Before Taking in a Lodger > > 1. **Insurance**: Ensure your home insurance covers lodgers; many policies don’t include this by default. > 2. **Tax Implications**: Rental income is subject to tax, but you may qualify for tax relief under the Rent-a-Room Scheme. > 3. **Legal Responsibilities**: As a landlord to a lodger, you must provide a safe and habitable living environment. > 4. **Privacy**: Sharing your space may impact your lifestyle and personal space. ## Residential calculator Explore your borrowing Start again Enter your figures in pounds. Your estimate updates as you go. Indicative maximum loan \- Enter your figures to see an estimate. Loan to value [Discuss your options](https://mortgagelane.com/contact) Indicative estimate only, subject to lender criteria and valuation. This is not a mortgage offer. Your property may be repossessed if you do not keep up repayments. ## Lodger Mortgage: frequently asked questions **What is a lodger mortgage?** A lodger mortgage allows you to rent out part of your residence under your existing residential mortgage, potentially using the income to help qualify for or manage your mortgage repayments. **Which mortgage lenders allow lodgers?** Many UK lenders such as Nationwide, Halifax, and Santander allow lodgers, but conditions and requirements may vary. **Can I have a lodger if I have a mortgage?** Absolutely, renting out a room to a lodger is typically allowed under most residential mortgages with the appropriate permissions. **Does lodger income count towards mortgage affordability?** Yes, some lenders will consider the income you receive from a lodger when assessing your mortgage application and affordability. **What are the benefits of having a lodger?** Additional income to help with mortgage payments and household expenses, potential tax benefits under the Rent a Room Scheme, and companionship. **What should be included in a lodger agreement?** A lodger agreement should outline rent amount, payment dates, house rules, duration of the stay, and conditions for termination. **Does having a lodger affect my home insurance?** Yes, you need to inform your insurance provider as having a lodger can affect your coverage terms. **Can lodger income help me get a bigger mortgage?** Potentially, yes, as some lenders will factor this income into your affordability calculations. **Which mortgage lenders accept lodger income?** Lenders like Barclays, HSBC, and others may accept this income, but it’s best to consult them directly for specific policies. **What are my responsibilities as a landlord to a lodger?** You are required to maintain the property in a safe and habitable condition and respect the lodger’s privacy and rights. **Do I need to change my mortgage if I get a lodger?** Not usually, but you should inform your lender and check if any specific changes or permissions are required. **How does a lodger mortgage calculator work?** It estimates how much additional income a lodger could generate and how this could impact your mortgage affordability. **What should I do if my lodger doesn't pay rent?** Address the issue directly with your lodger, and if necessary, follow the legal process for eviction as outlined in your lodger agreement. **Can I have a lodger with a mortgage?** Yes, most lenders permit this arrangement, but you need to check your mortgage terms and potentially get explicit permission from your lender. **Can I get a lodger with my mortgage?** Yes, if your mortgage agreement permits, you can rent out a room to a lodger. Always confirm with your lender to avoid any breaches of your mortgage terms. **Can I have a lodger with a residential mortgage?** Yes, many residential mortgages allow you to take on a lodger, though some lenders might require prior notification and agreement. **How do I apply for a mortgage that allows me to have a lodger?** Apply for a standard residential mortgage and discuss your intentions to have a lodger with the lender to ensure the terms allow for this setup. **Are there any risks in having a lodger?** Potential risks include privacy issues, potential for property damage, and the need for clear agreements on house rules. **How much rent should I charge a lodger?** The amount can vary based on local rental market rates, facilities provided, and inclusive of utility costs. **What happens if I want to end the lodger's stay?** Your lodger agreement should specify the notice period required to end the arrangement, typically at least 28 days. **What tax implications are there with lodger income?** You may be liable for income tax on the rent received, though the Rent a Room Scheme allows you to earn up to a threshold tax-free. **How do I ensure my property is suitable for a lodger?** Ensure safety measures are in place, and the property meets all required housing standards and local council regulations. **Can I evict a lodger without notice?** You must follow the agreed terms in your lodger agreement and provide the appropriate notice unless there are grounds for immediate eviction under severe breaches. **What is the difference between a lodger and a tenant?** A lodger rents a room and shares common areas like the kitchen and bathroom with the homeowner, while a tenant usually rents an entire dwelling. **Where can I find a lodger mortgage calculator?** Many financial websites and some lenders offer mortgage calculators that can incorporate lodger income into affordability calculations. **Can lodger agreements be customised?** Yes, lodger agreements should be tailored to reflect the specific terms agreed upon between you and your lodger. **What if my lodger wants to bring a pet?** You can specify in the lodger agreement whether pets are allowed and under what conditions. ## Related mortgage insights and guides - [2026](https://mortgagelane.com/guides/first-time-buyer-mortgage-guide)Guide[The Complete First-Time Buyer Mortgage Guide](https://mortgagelane.com/guides/first-time-buyer-mortgage-guide)The complete first-time buyer guide: deposits, 95% and 100% mortgages, JBSP and gifted deposits, concessionary purchases, Shared Ownership, First Homes, Right to Buy and every devolved scheme.[Read more about The Complete First-Time Buyer Mortgage Guide](https://mortgagelane.com/guides/first-time-buyer-mortgage-guide) - [2026](https://mortgagelane.com/mortgages/single-person-mortgages)Mortgage[Single Person Mortgages, Buying Alone and Applying Alone](https://mortgagelane.com/mortgages/single-person-mortgages)Single person mortgages: how much one income can borrow, buying alone, applying alone when married, joint mortgages on one income and joint to sole transfers.[Read more about Single Person Mortgages, Buying Alone and Applying Alone](https://mortgagelane.com/mortgages/single-person-mortgages) - [2026](https://mortgagelane.com/mortgages/mortgage-on-an-ex-council-flat)Mortgage[Mortgage on an Ex-Council Flat](https://mortgagelane.com/mortgages/mortgage-on-an-ex-council-flat)How lenders assess a mortgage on an ex-council flat: the block's ownership mix, high rise, lifts, deck access, EWS1, plus the buy to let tenant types lenders consider.[Read more about Mortgage on an Ex-Council Flat](https://mortgagelane.com/mortgages/mortgage-on-an-ex-council-flat) ## Talk it through with an adviser Let’s talk property finance ## Contact us **Call our team:** [+44 333 231 8206](tel:+443332318206) **Email us:** [enquiries@mortgagelane.com](mailto:enquiries@mortgagelane.com) **Opening hours:** Monday to Friday, 9am–6pm Closed Saturday and Sunday Your enquiry goes to our team, who will get in touch to discuss your next steps. 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