"Prime Build managed every detail of our two-storey rear extension. Weekly walk-throughs, fixed-price contract — and we moved back in two weeks ahead of schedule."
Hannah & Marcus G.
Wandsworth · Full Renovation
Sept 2025
Domestic Construction · London · Since 2014
Currently booking 2026 projects
We build homes
that quietly outlast
trends.
A decade of craftsmanship from foundations to finishes — Prime Build Design partners with London homeowners to deliver new builds, full renovations and extensions across Wembley, Ealing, Richmond, Chiswick, Wimbledon, Hampstead and Croydon.
10+
Years building
120+
Homes delivered
98%
Client referrals
Featured
London Period Home
Warranty
10-year structural guarantee
Public Liability Insured · £5M
10-Year Structural Guarantee
Registered in England & Wales
Building-Control Certified
10+ Years Building London Homes
120+ Projects Delivered
What we do
Seven disciplines.
One uncompromising standard.
Whether you're starting from a plot of land or transforming a family home, we bring the same quiet rigour — measured estimates, in-house teams, and weekly progress reports — to every project.
House Extensions
Side-return, wrap-around and rear extensions designed for London family life.
ExploreLoft Conversions
Dormer, mansard and L-shape loft conversions — turn unused roof into a master suite.
ExploreFull Renovations
Whole-home refurbishments delivered under one contract and one project lead.
ExploreNew Builds & More
Bespoke new builds, kitchens, bathrooms and structural work — every service in-house.
ExploreBefore / After
Real transformations.
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Every Prime Build project starts with a vision — and ends with a measurable transformation. These are real, in-progress and completed Prime Build sites across London.
Shell & Joists
Completed Facade
Hampstead New Build — Shell to Buff Brick Facade
Hampstead, NW3
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Structural Opening
Completed Extension
Side-Return Extension — Structural to Finish
London · Side-Return Extensions
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Selected projects
A portfolio rooted
in craftsmanship.
Renovation · Wembley Park, HA9
Wembley Park Full Refurbishment
Renovation · Wembley Park, HA9
Wet Underfloor Heating Install
Extension · Richmond, TW9
Richmond Kitchen Extension
Where we work
Local builders.
Across London.
Based in Wembley Park, we work across some of London's most discerning postcodes — with the local planning know-how and considerate-builder credentials each one demands.
What homeowners say
4.9 out of 5
across 62 reviews.
We're proud of every review we earn. Below is a selection of recent client feedback — and we're happy to put you in touch with past homeowners on request.
Leave a review on Google"Their team understood our brief immediately — modern lines but a home that feels warm. The joinery alone was worth every penny."
Priya R.
Surrey · New Build
Jul 2025
"After interviewing six contractors, we chose Prime Build for their transparency. Ten months later it's the best decision we made."
James A.
Hampstead NW3 · Refurbishment
May 2025
"From kitchen extension to a marble loft ensuite, the finish is hotel-grade. They run a calm, clean, professional site."
Sophie M.
Richmond TW10 · Whole-Home + Loft
Dec 2024
Frequently asked questions
Answers, before you ask.
We're based in Wembley Park HA9 and regularly work across Ealing (W5), Richmond (TW9/TW10), Chiswick (W4), Wimbledon (SW19), Hampstead (NW3) and Croydon (CR0/CR2). Get in touch if you're elsewhere in Greater London — we travel for the right project.