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House Extension
Need house extension? TradeMatch connects you with vetted UK builder professionals who specialise in house extension. Typical cost: £1,000–£10,000. Get up to 5 free quotes with escrow-protected payments.
Average cost: £15,000–£50,000· Escrow-protected payments · Free for homeowners
Get Free House Extension Quotes
Post your job in 2 minutes and receive up to 5 quotes from vetted, insured builder professionals.
Post a Job for FreeWhat's Included
Single and double storey extensions, side returns and wrap-around builds
✓Vetted & background-checked professionals
✓Public liability insurance verified
✓Escrow-protected payments
✓Verified homeowner reviews
✓CSCS Card
✓NVQ Level 6 Construction Management
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Frequently Asked Questions
How much does house extension cost in the UK?
The typical cost for house extension in the UK ranges from £15,000–£50,000. Prices vary depending on the scope of work, materials, your location and the tradesperson's experience. London prices are 20–40% higher. Get free, no-obligation quotes on TradeMatch to compare prices in your area.
How do I find a reliable builder for house extension?
On TradeMatch UK, every builder is vetted, background-checked and holds verified public liability insurance. Post your house extension job, receive up to 5 quotes from local professionals, then compare reviews, qualifications and pricing. All payments are escrow-protected.
What qualifications should I look for?
For house extension, look for professionals with: CSCS Card, NVQ Level 6 Construction Management, FMB Member. The relevant regulatory body is Federation of Master Builders (FMB) / NHBC. On TradeMatch, we verify these credentials before any tradesperson can join.
How long does house extension typically take?
The duration depends on the scope and complexity of the work. Most builder professionals will provide a timeline when quoting. Post your job on TradeMatch with details and you'll receive quotes including estimated timescales.
Is my payment protected for house extension?
Yes. TradeMatch offers escrow-protected payments. Your money is held securely and only released to the builder once you confirm the house extension work is complete to your satisfaction.
What guarantee should I expect for house extension?
A reputable builder should offer a written guarantee of at least 12 months on labour for house extension. For larger projects, look for guarantees backed by Federation of Master Builders (FMB) / NHBC or an insurance-backed warranty. On TradeMatch, all professionals are vetted and payments are escrow-protected.
How many quotes should I get for house extension?
We recommend at least 3 quotes to ensure a fair price. TradeMatch lets you compare up to 5 free quotes from vetted builder professionals. Don't automatically choose the cheapest — weigh reviews, qualifications and the detail in each quote.
What should a house extension quote include?
A good quote for house extension should include: itemised labour and materials costs, start and completion dates, payment terms, VAT status, and any exclusions. On TradeMatch you can compare detailed quotes side by side from multiple vetted professionals.
Can I get house extension done at weekends?
Many builder professionals work weekends, though they may charge 10–30% more for Saturday work and up to 50% extra on Sundays. On TradeMatch, specify your preferred dates when posting and local tradespeople who are available will quote accordingly.
More Builder Resources
Builder Cost GuideAverage prices & what affects costBuilder ReviewsRead verified homeowner reviewsBuilder Q&ACommon questions answered by expertsBuilder Near MeFind local professionals in your areaHow to Choose a Builder: 8 Essential Checks Before You HireExpert guide & adviceTradeMatch vs CheckatradeSee how platforms compare
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