Extension builders cost guide
A guide to typical UK prices for extension builders work. Use it to budget — then post your job for free to get accurate quotes from local tradespeople.
From
£1,800
Up to
£3,000
Measured
per m²
What affects the price
- The size and complexity of the job
- Materials and finishes chosen
- Access and site conditions
- Your location and local demand
- How urgently the work is needed
Prices shown are indicative guide ranges only and will vary by job and region. Always get written quotes before committing.
Typical extension builders jobs
FAQs
How much does a extension builder cost?
As a guide, extension builders typically charge £1,800 – £3,000 per m². Actual prices depend on the job, materials and access. Post your job for free to get accurate quotes.
How do I get quotes from extension builders?
Post your job on Lead and Trade in a couple of minutes. We match it to suitable local extension builders who can choose to quote. It's free with no obligation.
Are the tradespeople vetted?
Tradespeople build a transparent profile and can submit verification documents for review. We only show a verified badge when verification is genuinely complete — we never display fake badges, reviews or ratings.
Is my information kept private?
Yes. Your phone number, email, full name and full address are only shared with a tradesperson once they unlock your job through the platform.
Get free extension builders quotes
Typical cost £1,800 – £3,000 per m² — get an accurate price for your job.