Builders in Greater London

Building & renovation across Greater London

Based in South Woodford, RJS Innovative Building is a local team serving homeowners across Greater London. We specialise in renovations, extensions, loft conversions, basements and bespoke carpentry — the projects that change how a London home feels to live in, not just how it looks on paper.

Whether you are opening up a terraced kitchen in East London, adding a loft bedroom in the north, or planning a full refurbishment closer to the centre, we bring the same careful surveying, clear quotations and tidy site manners. Being based inside the A406 means we are never far away when something needs checking, and we already know the housing stock: Victorian and Edwardian terraces, 1930s semis, post-war rebuilds and modern family houses.

What we build for Greater London homes

• Renovations and extensions — single-storey and two-storey rear and side returns, wrap-arounds and whole-house refreshes coordinated under one programme.
• Loft conversions — rooflight, dormer and hip-to-gable designs that add a bedroom, office or playroom without giving up the garden.
• Basements — conversions and dig-downs where the plot and ground conditions make underground space the sensible next step.
• Bespoke carpentry — fitted kitchens and bathrooms as part of a wider build, plus wardrobes, staircases and made-to-measure joinery that finish the job properly.

We are a Which? Trusted Trader and a member of the Federation of Master Builders (FMB). Those accreditations matter because they sit behind the promises you hear on every builder’s website: vetted reviews, proper insurance, and a process built around accountable workmanship rather than pressure selling.

A free survey before anyone talks numbers

Every serious project starts with a free, no-obligation survey. We measure, look at structure and services, and talk through how you actually use the house — school-run mornings, working from home, entertaining, storage. Only then do we set out a clear scope and itemised quotation. If a loft is a better answer than an extension, or a garden room would serve you better than opening the rear wall, we will say so plainly.

Areas we cover

From our South Woodford base we regularly work across Greater London — East and North London especially, and further afield where the project is a good fit. Surrounding Essex and Hertfordshire communities are part of our day-to-day coverage too. Wherever you are, get in touch via our contact page to book a survey and talk through your plans in plain English.

Ready when you are — no hard sell, just practical advice from a local builder who builds for how Greater London families live.