Signature Build Properties is a fixed-price building firm working across Richmond upon Thames — new builds, full home renovations, loft conversions and extensions, all under one contract. We specialise in Richmond's period homes, from Victorian terraces near the Green to Edwardian and 1930s semis in Kew, Twickenham and East Sheen, delivering modern interiors that respect the character these streets are known for.
From a single kitchen extension to a complete new build, we deliver every type of residential project across Richmond upon Thames. All trades are managed in-house, with one point of contact from the first survey through to completion.
Full and partial renovations across Richmond, Kew and Twickenham — from opening up a tired ground floor to refurbishing an entire Victorian terrace. We handle structural changes, rewiring, plumbing, plastering and finishes under one contract, so you deal with one team rather than juggling trades.
View Home Renovation →Building from the ground up, or demolishing and replacing? We manage the entire new-build process in Richmond — design and drawings, planning, construction and handover — delivered to a fixed price and an agreed programme.
Discuss Your New Build →Dormer, hip-to-gable, mansard and Velux loft conversions that add a bedroom, en-suite or home office to your Richmond home. Many qualify under Permitted Development, though conservation-area streets need a closer look — we check before you commit.
View Loft Conversions Richmond →Single-storey rear and side-return kitchen extensions, wrap-arounds and double-storey additions — designed to add space, light and value. We're experienced with Richmond upon Thames Council applications and build every extension to one fixed price.
View House Extensions Richmond →Looking for something specific? See our dedicated loft conversions in Richmond and house extensions in Richmond pages for full details, costs and planning guidance.
Every home is different, so the only accurate figure is a fixed-price quote after a site survey. As a guide, here are the typical 2026 ranges we see across Richmond and South West London, reflecting BCIS and RICS build-cost data alongside local labour and material prices.
| Project | Typical Richmond range (2026) |
|---|---|
| Kitchen renovation | £15,000 – £40,000 |
| Bathroom renovation | £8,000 – £20,000 |
| Full home renovation | £1,500 – £3,000 per m² |
| Loft conversion — Velux / rooflight | £40,000 – £55,000 |
| Loft conversion — dormer | £55,000 – £90,000 |
| Loft conversion — mansard / hip-to-gable | £75,000 – £110,000 |
| Single-storey rear extension | £50,000 – £110,000 |
| Double-storey extension | £80,000 – £170,000 |
Richmond's period and conservation-area homes can sit at the higher end of these ranges because of additional structural work, party-wall agreements and heritage detailing. Your fixed-price quote covers design, build and finishes with no variation orders; VAT, planning fees and any party-wall surveyor costs are itemised separately so you can see exactly where your money goes. For a full breakdown, see our loft conversion and house extension Richmond pages.
Richmond upon Thames is one of London's most heritage-rich boroughs, with many conservation areas and listed buildings — so planning here needs more care than most areas. We manage the whole process for you.
Many single-storey rear extensions and loft conversions fall under Permitted Development and don't need a full planning application, provided they stay within size and height limits. We confirm your position before any work starts.
Large parts of Richmond, Kew, Petersham and Twickenham sit within conservation areas, and some streets carry Article 4 directions that remove Permitted Development rights. We check your specific address against the council's maps so there are no surprises.
If your home is listed, alterations need Listed Building Consent alongside planning permission. Our team is experienced in sympathetic work to listed and period properties throughout the borough.
Building Regulations approval is always required, even when planning permission isn't. Note the law changed in April 2024: the old "four-year rule" for unauthorised work was replaced by a single 10-year enforcement period in England — so it pays to get permissions right first time. See Richmond Council planning.
We handle Permitted Development checks, full applications to Richmond upon Thames Council and Building Control submissions as part of your project — so you're never left to navigate the council on your own.
We're set up for the demands of Richmond's period and listed properties — delivering modern results while respecting the area's architectural heritage. All our work meets UK Building Safety Regulator standards and Richmond Council planning requirements.
Extensive experience with Victorian terraces, Edwardian semis and listed buildings across Richmond, Kew and Twickenham. We deliver modern interiors while preserving the original character that gives these homes their value.
We know Richmond upon Thames Council's planning requirements, so applications are submitted correctly the first time. That means projects move faster and you don't lose fees to avoidable refusals.
From the first site visit to the final snag list, you have a single dedicated project manager. No chasing different trades and no juggling separate contracts.
Every project starts with a detailed written fixed-price contract. The price we quote is the price you pay — no hidden costs, no surprise variation orders at completion.
Carpenters, tilers, plumbers, electricians and decorators on our own team, with structural engineering arranged in-house. No unreliable subcontractors and no gaps when one trade hands over to the next.
Free site visits and written quotes for any project across Richmond upon Thames. We typically reply within two hours and can usually visit within 48 hours.
We cover the whole borough — Richmond (TW9, TW10), Twickenham, East Sheen and Mortlake — and the surrounding South West London areas.
We're a Checkatrade-vetted, fully insured building firm. Every project across Richmond is delivered on a written fixed-price contract, signed off by Building Control and backed by our workmanship guarantee. Read our verified reviews on Google and Checkatrade — and once your project's complete, we'd be glad to add yours.
A written quote before any work begins. The price we quote is the price you pay — no variation orders and no surprises at completion.
Full public liability, employers' liability and contract works insurance on every project, plus a written workmanship guarantee and Building Control completion certificate.
Our work is independently reviewed on Checkatrade and Google. Follow the links below to see what homeowners say — and to leave your own review.
Call us or send a message for a free, no-obligation site visit and written quote. We reply within two hours and can usually visit within 48 hours — period property specialists, one team, one contract, one fixed price.
Contact us today to discuss your project and receive a no-obligation quote.
