A secured loan for home improvements in the UK is a property-secured loan where the funds are used to fund building work, refurbishment, or renovation on the borrower's home. The right product depends on whether you have an existing mortgage and how big the project is: small projects often suit unsecured personal loans; larger projects (extensions, loft conversions, full refurbishments) typically use a remortgage with capital raise, a second-charge mortgage, or for unencumbered properties an unencumbered first-charge mortgage. This article covers each route, how to compare them, what UK lenders typically check on home improvement cases, and the FCA framework that applies.
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TL;DR Three main UK secured routes: remortgage with capital raise, second-charge mortgage, further advance from current lender. Unsecured alternative: a personal loan up to £25,000-£50,000 may be cheaper for smaller projects on a 5-7 year term. Typical project sizing: kitchen refit £15,000-£40,000; loft conversion £30,000-£70,000; extension £40,000-£200,000. Lenders may want evidence: quotes from contractors, planning permission where required, and in some cases stage payment release. |
Three main UK secured routes for home improvements
Route 1: Remortgage with capital raise
The new lender replaces your existing first-charge mortgage with a larger one, releasing the difference as cash for the project. Best for borrowers near the end of a fixed period, where mainstream rates are available, or where a full restructure makes financial sense alongside the project. Typical timeline: 6-12 weeks. Lender pool: all mainstream UK first-charge lenders.
Route 2: Second-charge mortgage
A new lender adds a second charge against your home behind your existing first mortgage. The first mortgage continues unchanged. Best for borrowers tied into a low fixed-rate first mortgage with high ERCs, or who need to complete quickly. Typical timeline: 3-6 weeks. Lender pool: specialist second-charge lenders (Pepper, Selina, United Trust Bank, Together, and others).
Route 3: Further advance from existing first-charge lender
Your current mortgage lender tops up the existing first mortgage by the project amount. Best for borrowers who want to stay with their current lender and whose lender's product range is competitive. Typical timeline: 4-8 weeks. Lender pool: your existing first-charge lender only.
| Situation | Best route |
|---|---|
| Tied into low fixed first mortgage with high ERCs | Second-charge mortgage |
| Near end of fixed period | Remortgage with capital raise |
| Want to stay with current lender | Further advance |
| Property has no existing mortgage (unencumbered) | First-charge mortgage on the unencumbered property |
| Adverse credit on file | Specialist second-charge lender |
| Small project under £25,000 | Compare against unsecured personal loan |
How much you can borrow for home improvements
Two limits apply, the lower of which sets the maximum:
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Limit 1, equity available: Maximum loan = (Property value × Maximum combined LTV) − Existing first-charge balance Limit 2, affordability: What the lender's stress-tested affordability calculator allows under FCA MCOB 11 rules |
Mainstream UK lenders typically cap combined LTV at 75-85 percent for capital-raise cases. Specialist lenders may go to 90 percent in narrow cases.
Documents and evidence UK lenders typically request
Standard mortgage application pack plus project-specific documents:
- Photo ID (passport or driving licence) and proof of address less than 3 months old.
- 3 months of payslips (employed) or 2 years of accounts plus SA302s (self-employed).
- 3 months of personal bank statements covering all accounts.
- Most recent first-charge mortgage statement (second-charge or further-advance routes).
- Buildings insurance schedule.
- Project documentation: written quotes from contractors, builder credentials, project plan.
- Planning permission documentation if required (extensions, loft conversions, certain alterations).
- For larger projects: detailed cost breakdown and contingency reserve.
Some lenders pay funds in stages (released on milestones) rather than as a single lump sum, particularly for larger structural projects. This protects both the lender and the borrower against project overruns or contractor failures.
How rates compare across the routes
| Route | Typical rate level |
|---|---|
| Remortgage with capital raise (mainstream) | Mainstream first-charge mortgage rates |
| Further advance from existing lender | Existing lender's standard rates; may be competitive or expensive depending on lender |
| Second-charge mortgage | 1-3 percentage points above mainstream first-charge rates |
| Unsecured personal loan | Higher rates than secured but no property at risk; faster setup |
| 0% credit card / 0% balance transfer | Possible for very small short-term needs; rate jumps after intro period |
Always compare APRC, not headline rate. APRC is the FCA-regulated total cost figure under MCOB 10A.
Project budgeting realities
UK home improvement projects routinely overrun their initial budgets. Standard contingency provisions:
| Project type | Recommended contingency |
|---|---|
| Cosmetic refurbishment (paint, flooring, fittings) | 10% of project budget |
| Kitchen or bathroom refit | 15% of project budget |
| Loft conversion | 15-20% of project budget |
| Single-storey extension | 15-20% of project budget |
| Two-storey extension or major structural work | 20-25% of project budget |
| Older property renovation (Victorian, Georgian, listed) | 25-30% of project budget |
Borrow for the contingency, not just the headline budget. Going back for additional borrowing mid-project usually costs more in fees, time, and rate uncertainty than borrowing the contingency upfront.
Use-of-funds restrictions
Most UK lenders ask for "purpose of loan" at application and may restrict funds use. Common categories accepted for home improvement loans:
- Extensions, conversions, alterations.
- Kitchen and bathroom refits.
- Energy-efficiency upgrades (solar, insulation, heat pumps).
- Roof and structural repairs.
- Decoration, flooring, fittings.
- Landscaping and external works.
- Combined home improvement and small consolidation in some cases.
Some specialist lenders restrict to specific home improvement types or exclude certain works (such as pure landscaping with no fabric improvements). The lender or broker should confirm acceptance during the DIP stage.
Risks specific to home improvement secured borrowing
- Property at risk. Default can lead to a court order for possession.
- Term extension increases lifetime interest. A 25-year mortgage on £40,000 of refurbishment costs more in total than a 7-year unsecured loan, even at lower rates.
- Project overruns can leave funding gaps. Contractors going over budget mid-project is common; without contingency, additional borrowing is needed.
- Improvements don't always add equivalent value. A £40,000 kitchen refit doesn't necessarily add £40,000 to the property value, depending on local market and existing kitchen condition.
- Combined LTV exposure. Higher combined LTV reduces equity cushion against falling property prices.
Free home-improvement budgeting guidance is at MoneyHelper. Consumer protection on building work is set out in the Consumer Rights Act 2015.
Primary sources
- FCA Mortgage Conduct of Business handbook: handbook.fca.org.uk/handbook/MCOB/
- FCA Register: register.fca.org.uk
- HM Land Registry registration fees: gov.uk/guidance/hm-land-registry-registration-services-fees
- Consumer Rights Act 2015: legislation.gov.uk/ukpga/2015/15
- Planning Portal: planningportal.co.uk
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Disclaimer: This article is editorial information only and does not constitute financial advice or a recommendation of any specific product or lender. UK secured loans on residential property are regulated by the Financial Conduct Authority. Your home may be repossessed if you do not keep up repayments on a mortgage or any other debt secured on it. Always consult an FCA-authorised mortgage broker or adviser for personalised guidance, and verify lender details on the FCA Register before making any decision. |
Frequently asked questions
Should I take a secured loan or an unsecured loan for home improvements?
Depends on the project size and your situation. For projects under £25,000 with clean credit, an unsecured personal loan is often simpler and avoids putting the home at risk. For larger projects or borrowers with adverse credit, secured borrowing typically offers better rates and larger loan amounts.
Will my lender check what I'm spending the money on?
Yes, at application stage. Most UK lenders ask for "purpose of loan" and may request quotes or evidence for larger projects. Some specialist lenders pay funds in stages tied to project milestones rather than as a single lump sum.
Can I add a home improvement loan to my existing mortgage?
Yes, via a remortgage with capital raise or a further advance from your current lender. Both routes increase your existing mortgage balance and use the additional funds for the project.
What happens if my project goes over budget?
Without contingency built into the loan, you may need to fund the overrun from savings, take additional borrowing, or scale back the project. Going back for a top-up loan mid-project is typically slower and more expensive than borrowing for the contingency upfront.
Will home improvements add value to my property?
Sometimes, but not always pound-for-pound. A £40,000 kitchen refit might add £20,000 of property value in some markets and £45,000 in others. Energy-efficiency upgrades, loft conversions, and well-executed extensions tend to add the most value relative to cost; cosmetic upgrades add less.
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FIND AN FCA-AUTHORISED MORTGAGE BROKER A whole-of-market broker can compare home-improvement lending routes (remortgage, second charge, further advance, unsecured) on your actual figures and identify the lowest APRC for your project. The KFI directory lists FCA-authorised mortgage brokers across the UK, filterable by region and specialism. All firms shown are verified against the FCA Register at the time of listing. |