Free builder introductions across London
Planning an extension, a loft conversion or structural work? Tell us about it once and we'll pass it to up to three independent builders who cover your part of London, so they can contact you and quote. Free, with no obligation.
The service
London Builders doesn't build. We introduce homeowners to independent local builders, free, so you can compare written quotes from people who work close to home.
Projects we can help with
Find local builders for rear, side-return, wrap-around and two-storey extensions.
Explore
Find local builders for dormer, hip-to-gable and roof-light loft conversions.
Explore
Find local builders for knock-throughs, steels, new walls and strip-outs to a sound shell.
Explore
How it works
The introduction service follows the same steps every time, so you know what happens next and who you're dealing with.
Official updates
The Journal
Latest ·
Havering prices rose 1.1% to £444,572 in August 2026. The £103,800 terrace-to-semi gap against extension costs, the 2011 extensions SPD, Green Belt, 11 conservation areas, flood risk and party walls, with sources.
Read the guideHarrow prices eased 2.5% to £532,173 in August 2026. The small £127,500 terrace-to-semi gap, the Residential Design Guide’s extension and loft rules, 30 conservation areas, basements and party walls, with sources.
Haringey prices eased 1.4% to £633,221 in August 2026, while houses held up. The £435k terrace-to-semi gap, DM12 extension rules, South Tottenham’s three roof designs, conservation areas, basements and party walls, with sources.
Hammersmith and Fulham prices fell 5.1% to £754,825 in August 2026, with terraces near £1.17m. The flat-to-house gap, the council’s 3.5m rear extension rule, 44 conservation areas, basements and flood risk, with sources.
More than one quote
Want to compare prices? Describe the job and, with your agreement, we can pass it to up to three checked builders near you, nearest first. Free, with no obligation.
For the trade
London builders and trades can apply, free, to hear about projects close to where they work. Every application is checked by hand.
We’re building our network of local builders borough by borough, so we can’t cover every area yet. Listing and matching are free. Why we match locally · How it works
Get started
Use the form and local builders who cover your area can contact you to quote. No phone tag, no pressure, and it's free.
