Builders Chelsea

A row of red brick riverside townhouses with black railings along the Thames.

They have been extremely efficient and reassuring. It was a complex project but they took it all in their stride. They recommended very good contractors who were all punctual, polite and capable.

Andrew

London

Having the Beams team on hand to manage the project and provide extra reassurance on build decisions was incredibly helpful and made the whole experience stress free.

Kerry

London

All about trust. I felt comfortable with my money, my project, and my home knowing that the outcome would be to my satisfaction or would be made good.

Chris

London

Vetted builders in Chelsea, not one-size-fits-all

Chelsea covers a wide mix of housing, from Victorian and Georgian terraces around Cheyne Walk and Chelsea Embankment to mansion blocks near Sloane Square and newer developments closer to Chelsea Harbour. We match every project with a builder whose experience fits the property, not a generic trade list.

Every builder we work with is personally vetted for quality, insurance and reliability before they are matched to a Chelsea project, and you get up to three like-for-like quotes to compare before you choose.

What our Chelsea builders can do

Kitchen and bathroom renovations, loft conversions, basement conversions, side return and rear extensions, and full home refurbishments, including projects that need careful handling because of a property's age or a conservation area setting.

Your builder works to a detailed scope of works agreed up front, with design support available throughout, so there is no ambiguity about what is and is not included.

What a builder costs in Chelsea

Chelsea is one of London's most expensive property markets, and build costs tend to sit toward the higher end of London ranges as a result. Based on Beams estimates for London building projects, typical fixed-price ranges look like this.

Project type	Typical estimate
Bathroom renovation	£20,000 - £45,000
Kitchen renovation	£40,000 - £100,000+
Loft conversion	£70,000 - £150,000+
Rear or side return extension	£90,000 - £200,000+
Full home renovation	£250,000+

Every quote is fixed before work starts, so there is no ambiguity once the build is underway.

How it works

1. Get your free estimate — tell us about your project, property and budget.

2. Compare vetted builders — we match you with up to three like-for-like quotes.

3. Build with confidence — a fixed-price contract, milestone payments and a 12-month warranty.

Why homeowners choose Beams over finding a builder cold

Finding a trustworthy builder by word of mouth or online listings takes time, and it is hard to know what you are getting until work starts. Beams vets every builder in advance, gives you a fixed-price contract before you commit, and stays involved so you are never dealing with the project alone.

Protections on every Chelsea project

A fixed-price contract agreed before work starts, milestone payments so you never pay ahead of progress, and a 12-month workmanship warranty on every project, backed by insured, vetted builders throughout.

Renovation projects across Chelsea

Chelsea's postcodes (SW3, SW10, and parts of SW1) cover streets from King's Road and Sloane Square through to Cheyne Walk, Chelsea Embankment and Chelsea Harbour. We work with homeowners across all of them, on projects ranging from a single bathroom refit in a mansion block to a full refurbishment of a period townhouse.

Renovating a home in Chelsea

The average property price across the Royal Borough of Kensington and Chelsea reached £1,233,000 in the year to July 2026 (provisional, ONS/HM Land Registry), among the highest of any London borough. Nearly three quarters of the borough sits within one of its 38 conservation areas (RBKC, current as of September 2026), and much of Chelsea falls inside these boundaries, so many projects need extra care with materials, windows and external changes even where planning permission itself is not required.