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 Barnet, not one-size-fits-all
Most searches for a builder in Barnet end with one quote from one firm and a leap of faith. Beams works differently. We match you with vetted specialists suited to your project, give you up to three like-for-like quotes to compare, and put proper protections in place before a single day of work begins.
Every builder in the network is personally vetted. We meet them in person, check references and inspect recent work, so only reliable, high-quality tradespeople reach you. You choose who you want to work with, with the full picture in front of you.
What our Barnet builders can do
From a single room to a whole house, our builders take on the full range of home renovation work across Barnet:
Kitchen and bathroom renovations: From refits to side-return kitchen extensions.
Loft conversions: Dormer, hip-to-gable and Velux.
House extensions: Single-storey and side-return to wraparound and double-storey.
Basement and cellar conversions: With proper waterproofing.
Full home renovations and refurbishments: First fix to final snag, under one contract.
What a builder costs in Barnet
There is no flat rate. What builders charge in Barnet depends on the size of your property, the scope of the work, the specification and finish, and the condition of a period home. Barnet's outer-London position, with an average house price of £601,000 (ONS/HM Land Registry, July 2026 provisional), means costs typically sit below inner London but above the UK national average. Rather than quote a headline figure, Beams gives you a free estimate range upfront, and your builder confirms a fixed price once the scope is agreed.
Project type | Typical cost range |
|---|---|
Bathroom renovation | £15,000 - £35,000 |
Kitchen renovation | £25,000 - £60,000 |
Loft conversion | £45,000 - £75,000 |
Single-storey rear extension | £60,000 - £110,000 |
Full home renovation | £150,000 - £400,000+ |
Based on Beams estimates for London building projects. Your fixed price depends on the scope, specification and condition of your home.
How it works
1. Get your free estimate: Tell us about your project and budget; your planner gives you a range before any commitment.
2. Meet trusted builders: Book up to three free visits and compare like-for-like quotes.
3. Renovate with confidence: Choose your builder and Beams sets up the contract and milestone payments.
Why homeowners choose Beams over finding a builder cold
Hiring off a directory or a word-of-mouth tip is a gamble on price, quality and reliability. With Beams the hard parts are handled. You compare like-for-like quotes from vetted builders, your price is fixed in writing, your money is protected by milestone payments, and your workmanship is covered for 12 months. It is the difference between hoping a build goes well and knowing the safeguards are already in place.
Protections on every Barnet project
Every project comes with our full Protections:
Personally vetted builders: Met in person, references and recent work checked.
Fixed-price contracts: Agreed in writing before work begins.
Milestone payments: Held securely, released only when you approve each stage.
12-month workmanship warranty: Plus up to £10,000 cover if a builder leaves the network.
Licensed and insured: Minimum £6m public liability insurance.
Renovation projects across Barnet
We work with vetted builders right across Barnet, from Finchley, Hendon and Mill Hill to Whetstone, Totteridge and High Barnet, covering postcodes N2, N3, N11, N12 and N20 as well as NW4, NW7, NW9 and the EN4 and EN5 areas around New Barnet and Cockfosters. The borough's housing stock is mixed, from Edwardian and Victorian terraces around Finchley and Hendon to the 1930s semis and detached houses common across Mill Hill, Totteridge and Whetstone, and post-war and more recent builds elsewhere. Our builders know this range of properties, the borough's planning rules and the quirks that come with renovating in this part of London.
Renovating a home in Barnet
Barnet is one of London's largest boroughs by area, and its character changes street by street. Around 16 conservation areas protect parts of the borough, including Totteridge, Mill Hill and Monken Hadley, together with the section of Hampstead Garden Suburb that falls within Barnet. Several of these, including Totteridge and Mill Hill, have Article 4 directions in place, removing permitted development rights for things such as external doors, windows, roofing materials, hardstandings, porches and external painting, so more works need planning permission than on a typical street. Outside conservation areas, most home renovation work such as replacing a kitchen or bathroom does not need planning permission, though it still has to meet Building Regulations. With an average house price of £601,000 (ONS/HM Land Registry, July 2026 provisional), Barnet sits below many inner-London boroughs, which makes extending or renovating rather than moving a common choice for homeowners here.
The same design team, vetted builders and fixed-price process sit behind every project. See how our vetted builder network works, from the first design call to final sign-off. Barnet borders Muswell Hill and Hampstead, and we cover both alongside the whole of Barnet.
Other services in Barnet
We also help Barnet homeowners with:
Builders in nearby areas:
Ready to start your Barnet build?
Get a free estimate and take the first step. No commitment, no sales pressure.