Trusted builders for extensions, renovations and repairs across London. Fully insured, free quotes, and quality workmanship you can rely on.
No-obligation, transparent pricing
Public liability cover on every job
Built to last, guaranteed
Your trusted London builders
From a single repair to a full home transformation
Single & double-storey extensions, kitchen extensions and conservatories that add space and value.
Full refurbishments, structural alterations and property restorations done to a high standard.
Beautiful, functional kitchens and bathrooms supplied and fitted by our own tradespeople.
New roofs, repairs, repointing, garden walls and all aspects of quality brickwork.
Foundations, drainage, patios, block-paved and resin driveways built to last.
Turn unused loft space into a bedroom, office or bathroom with a full conversion.
Building work without the stress
Our team are experienced, time-served builders who take genuine pride in their work — no cut corners, no surprises.
You get a detailed written quote up front, so you know exactly what's included and what it costs before we start.
We turn up when we say we will, keep the site tidy, and treat your home with respect from first visit to final sign-off.
Real feedback from homeowners across London
SLL PrimeBuild did a two-storey extension on our home and we couldn't be happier. The quote was clear, the work was spotless, and they finished on schedule. The lads were polite, tidy and clearly knew their trade. Highly recommended.
A track record built on quality and trust
Getting your project started is simple
Call, WhatsApp or fill in our quote form and tell us about your project.
We visit, discuss your ideas and provide a clear, no-obligation written quote.
Our team gets to work on time, keeps you updated and keeps the site tidy.
We walk through the finished work together to make sure you're delighted.
Answers to common questions about working with us
Get a free, no-obligation quote today — we'd love to help bring your plans to life.