A renovation mortgage is any borrowing used to buy or refinance a property and fund the work needed to improve it. Depending on the size of the project, this can mean a standard mortgage with a further advance, additional borrowing on a remortgage, a specialist renovation or self-build product released in stages, or short-term bridging finance for properties that are not yet habitable. The right route depends on the condition of the property and the scale of the work.
This guide explains how renovation mortgages work in 2026, the funding options available, how lenders treat properties that need work, and how to choose the most cost-efficient approach for your project.
What is a renovation mortgage?
A renovation mortgage is not usually a single named product but a way of combining the purchase or refinance of a property with the cost of improving it. For light work such as a new kitchen or redecoration, additional borrowing on a standard mortgage is often enough. For major structural work, or for a property a mainstream lender considers uninhabitable, you may need a specialist renovation product or bridging finance that is later replaced with a standard mortgage once the work is complete.
Redecorating vs renovation: why the difference matters to lenders
Lenders draw a clear line between cosmetic updates and structural renovation. Redecorating, such as painting, flooring, or a new bathroom, does not usually affect whether a property is mortgageable. Renovation that involves structural changes, extensions, or bringing a derelict property back into use is treated very differently, because the property may not be suitable security for a standard mortgage until the work is finished. Knowing which category your project falls into determines which type of finance you need.
How do you fund a renovation project?
| Funding route | How it works | Best suited to |
|---|---|---|
| Further advance | Extra borrowing from your existing lender on top of your current mortgage | Smaller improvements where you already have equity |
| Remortgage with additional borrowing | Moving to a new deal and releasing equity to fund the work | Medium projects where a new rate also helps |
| Renovation or self-build mortgage | Funds released in stages as the work progresses, often with a retention | Major renovations and conversions |
| Bridging finance | Short-term loan to buy and renovate an uninhabitable property, repaid by a later mortgage or sale | Properties a standard lender will not accept as-is |
Can you get a mortgage on a property that needs renovation?
It depends on the property’s condition. A home that is habitable but tired can usually be bought with a standard mortgage, with the work funded separately. A property without a working kitchen or bathroom, or with serious structural problems, is often declined by mainstream lenders because it is not currently suitable security. In those cases, bridging finance or a specialist lender is the usual starting point, with a plan to move onto a standard mortgage once the property meets normal lending criteria.
Refurbishment mortgages: light and heavy refurbishment explained
A refurbishment mortgage is the term lenders and brokers use for finance on a property that needs work before it meets normal mortgage criteria. Lenders usually split projects into two groups, and which group yours falls into shapes the whole application.
Light refurbishment
Light refurbishment is non-structural work: a new kitchen or bathroom, rewiring, replastering, new windows or general modernisation. Planning permission or building regulations sign-off is not normally needed for the core work. If the property is habitable when you buy it, a standard residential or buy-to-let mortgage is often possible, with the work paid for from savings, a further advance later, or a short bridging loan where the lender will not accept the property as it stands.
Heavy refurbishment
Heavy refurbishment involves structural change: removing load-bearing walls, extensions, loft conversions, change of use (for example converting a house into flats) or any work that needs planning permission and building control approval. Most mainstream lenders will not lend against a property during this kind of project, so specialist refurbishment or bridging finance is the usual route, typically with staged drawdowns and a surveyor’s sign-off at each stage.
What a lender will ask to see
- A schedule of works and itemised builder’s quotes
- Planning permission and building regulations approval where required
- An estimated value once the work is complete (the gross development value on larger projects)
- Evidence of the funds you are putting in, plus a contingency for overruns
- A clear exit plan, such as refinancing onto a standard mortgage or selling
Can a first-time buyer get a renovation mortgage?
Yes, although the options are narrower. Many lenders prefer applicants with previous property or refurbishment experience for heavy projects, so first-time buyers often find it easier to buy a habitable property that needs cosmetic work with a standard mortgage and fund improvements afterwards. Where a property is unmortgageable as it stands, a specialist lender may still consider a first-time buyer with a realistic budget, a qualified builder and a clear plan to refinance.
How lenders release funds in stages
On a staged or self-build style product, the lender releases money at agreed points as the work progresses, rather than all at once. A surveyor may inspect at each stage, and the lender may hold back a retention until specific work is complete. This protects the lender and keeps the funding aligned with the value being added, but it means you need to plan cash flow carefully so each stage can be started before its funds are released.
Costs and things to plan for
Beyond the loan itself, budget for a valuation or survey, legal fees, and any product or arrangement fees, and build in a contingency for renovation overruns, which are common. Consider how long the work will take and whether the property will be habitable during it, as that affects both your living arrangements and the type of finance available. Getting accurate quotes for the work before you apply helps you and the lender size the borrowing correctly.
Frequently asked questions
Can I add renovation costs to my mortgage? Often yes, through a further advance or additional borrowing on a remortgage for smaller projects. Larger works may need a staged renovation product or bridging finance.
Can I get a mortgage on an uninhabitable property? Usually not with a standard mortgage. Bridging finance or a specialist lender is common, with a plan to refinance onto a normal mortgage once the property is habitable.
What is a retention on a renovation mortgage? It is money the lender holds back until certain work is completed, releasing it once a surveyor confirms the stage is finished.
Is bridging finance expensive for renovations? Bridging is short-term finance and is arranged differently from a standard mortgage. It can be a useful tool for properties that do not yet qualify, but the exit plan to repay it matters, so advice is important.
For help choosing the most cost-efficient way to fund your project, speak to our team via the meet our team page or explore our mortgage, property and money advice hub.
Related Mortgage Guides
- Additional borrowing on your mortgage
- Remortgage to build an extension
- Further advance mortgages
- Private and specialist mortgage lenders
- Meet our FCA-regulated mortgage advisers
- About adviser Damian Youell
Your home may be repossessed if you do not keep up repayments on your mortgage. Needing Advice is an independent, FCA-regulated whole of market mortgage broker. This article is general information only and does not constitute financial or mortgage advice. Availability and lender criteria vary and can change, and any arrangement depends on your individual circumstances. There is no obligation, and we recommend seeking personalised advice before making any decision.
Damian Youell
Damian is the founder of NeedingAdvice.co.uk and the firm’s Senior Mortgage Broker. He specialises in helping clients across the UK with straightforward and complex mortgage cases, including self-employed applications, adverse credit, buy-to-let, remortgages and first-time buyer mortgages.
Alongside mortgage advice, Damian also supports business owners with protection planning, including Relevant Life Policies, Shareholder Protection and Keyperson Cover.
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