The 9 best renovation companies in London for 2026, and how to choose
Beams is our pick for the best full-service renovation company in London for 2026. We would say that, because we are Beams, so treat the ranking as a starting point and the rest of this page as the useful part: the five questions that actually predict whether a renovation goes well, what a London project costs, and honest profiles of the other companies worth looking at.
There is no independent league table for London renovation companies. Nobody audits this category. Every "best of" list you will find, including this one, is written by someone with an interest, and the ones that do not admit it are the ones to be most careful with.
How we built this list
We started from the companies that appear repeatedly in London renovation searches and industry coverage, then read each one's own website in August 2026 and recorded only what they publish about themselves: how long they have traded, where they work, what they specialise in and how they describe their own service.
We have deliberately not scored the other companies against our five criteria. Their contract terms, vetting and warranty cover are not consistently published, they change, and we are not a neutral party. Publishing a grade we cannot stand behind would be worse than publishing nothing. So the criteria below are yours to apply, to us as much as to anyone else.
The five checks that predict whether a renovation goes well
Most comparisons weigh up portfolios and star ratings. Both matter, and neither tells you what happens when something goes wrong, which is the thing a first-time renovator cannot work out from a website.
These five do a better job. The middle column is the part worth memorising, because most people know to ask about price and warranty and have no idea what a good answer sounds like, so they accept a vague one.
What to check | What to ask | A good answer sounds like | Why it matters |
|---|---|---|---|
Who is doing the work | How did you check the builder who will actually be on my job, and what did you find? | We met them in person, took references on recent jobs, inspected work they finished this year, and here is their public liability certificate. | A company that subcontracts to whoever is free that month has checked nothing on your behalf. |
Whether the price is fixed | Is this a fixed price or an estimate, and what specifically would make it change? | Fixed, in writing, before work starts. It moves only if you change the scope or something is found behind a wall, and you approve either before it is done. | An estimate is not a price. This one distinction sits behind most renovation overspend. |
Where your money sits | When do I pay, and who holds the money between my payment and the work being done? | Staged payments tied to work you have signed off, held securely and released only on your approval. | Pay ahead of the work and you are an unsecured creditor of your builder. |
What happens if it fails | What is covered if the finish fails six months after handover, and who pays if the builder is no longer trading? | Twelve months on workmanship, in writing, with cover that still stands if that builder has gone. | A warranty is only worth as much as whoever is still standing behind it. |
Who owns the join | If the design does not build as drawn, who is responsible for fixing it? | One named party in the contract owns it. | Where design and build are split and nobody owns the gap, problems get argued about instead of fixed. |
Ask all five. Most companies answer one or two well.
What a London renovation actually costs
Almost no "best companies" page will tell you this, which is odd, because it is usually the second thing you want to know. Prices vary by company, but the project itself has a shape, and knowing it stops you being surprised by a quote or reassured by a cheap one.
Project | Typical cost including VAT |
|---|---|
£30,000 to £40,000, typically around £34,400 | |
£13,700 to £20,000, typically around £15,700 | |
£53,000 to £79,000 across the UK, £72,000 to £120,000 in London | |
£42,000 to £72,000 across the UK, £49,000 to £84,000 in London |
Two things to hold onto when quotes come in. Professional and statutory fees, meaning planning, building control, structural engineer and any party wall surveyor, sit outside the build cost and are a common reason two quotes look different. And a quote well below these ranges is usually not a bargain, it is a different scope, or a price that has not been fixed yet.
The companies
1. Beams
Beams is not a builder, and that is the whole design of it. It sits between you and the trade, and you can take as much or as little of it as your project needs. Some people want the lot: a design produced in house, then a vetted builder matched to deliver it. Others arrive with drawings already done and want only the builder and the protections. Both are normal.
What stays constant is the structure around the job. Builders in the network have been met in person, had references taken and recent work inspected, and each carries at least £6m of public liability cover. Your build is priced and delivered on a fixed-price contract signed before anyone starts, and the builder runs it day to day rather than Beams. Your money moves in stages, held securely, released when you sign off the stage it belongs to. Workmanship is warranted for 12 months, and if that builder leaves the network inside the year, Beams puts up to £10,000 behind putting it right.
Beams is a certified B Corp and has delivered hundreds of London renovations across kitchens, bathrooms, extensions and whole houses. On Beams' own figures, once a design and scope are agreed, projects run an average of 1.8 per cent over budget and finish around 2 per cent ahead of schedule.
2. NU Projects
Trading since 2010 and describing itself as a premium design and build service, NU Projects brings architecture, interior design, project management and construction under one roof, with mechanical and electrical work and bespoke joinery in house too. It works across Prime Central London and the south west, naming Fulham, Battersea, Wimbledon, Barnes, Chiswick, Richmond, Chelsea and South Kensington, and takes on renovations, extensions, basements, lofts and new builds. It displays NICEIC and Gas Safe registration.
3. Hampstead Renovations
Hampstead Renovations runs architect-led, gut-to-finish renovation as a single contract, from RIBA Stage 0 through to handover under the RIBA Plan of Work 2020. It covers NW3, NW8, NW1, SW1, SW3, SW7, W1 and W11 from a studio on Finchley Road, and reports more than 103 residential projects on Georgian townhouses, Victorian terraces, Edwardian villas and Arts and Crafts homes. Scope includes structural alteration, underpinning and Party Wall Act work. It uses RIBA chartered architects and MIStructE-led structural engineering, with RICS surveying through a sister company.
4. Proficiency Design & Build
Trading since 2011, Proficiency describes itself as a complete design and build service with every stage in house, alongside a separate architect service. It covers north west, north, south, south west and central London, naming West Hampstead, Queens Park, Maida Vale, Earls Court, Marylebone, Chelsea, Islington, Muswell Hill, Holland Park, Kensington and Hampstead, and runs a studio showroom on Fortune Green Road. Stated specialisms include basements, listed buildings, conservation-area property and Georgian, Victorian and Edwardian renovation. It is an FMB member and an NICEIC Approved Contractor.
5. houseUP
houseUP is a London construction company specialising in high-end residential and commercial work, offering design and build while partnering with architecture practices on the design side. It has offices in Covent Garden and Hackney, with projects named in Belgravia, Chelsea, Highgate, South Kensington, Shoreditch, Hammersmith, Chiswick and Greenwich. Alongside renovations, extensions, lofts and basements it lists conservation architecture, structural glass, soundproofing and sash window work, and says it has handled basements in listed buildings and conservation areas.
6. LCCL Construction
LCCL Construction is an award-winning design and build company trading for over 20 years, registered as House Extension Company London Limited. It works from Finchley across all of London and into Hertfordshire, naming Barnet, Hampstead, Highgate, Islington, Camden, Enfield, Putney, Chelsea, Fulham, Ealing, St Albans and Watford, and reports more than 350 completed projects. Loft conversions and extensions are the core, with basements and new builds alongside, and it offers architecture, planning and party wall services separately. It is an NFB member and an LABC Registered Partner, and won an LABC regional award in 2024.
7. DPA Home Renovations
DPA Home Renovations is a family-run full-service construction company covering south London, including Clapham Junction, Battersea, Fulham, South Wimbledon, Croydon, Kingston, Sutton, Lambeth, Merton, Richmond and Wandsworth. It has worked in the area for over 20 years and handles full house renovations, kitchen extensions, lofts, basements and new builds, as well as individual kitchens and bathrooms and decorating. It states that it works with RIBA chartered architects on the design side.
8. Hill & Way
Hill & Way is a Notting Hill building services company specialising in improvements to high-end residential homes, and taking on commercial and publicly owned property too, freehold or leasehold. It covers Notting Hill, Kensington and Chelsea, Mayfair, Westminster, Islington, Belsize Park, Hampstead, Chiswick, Wimbledon and Totteridge. The service list is unusually broad: extensions including side and L-shaped, lofts, basements, bathrooms and wet rooms, internal remodelling, electrical and smart home, carpentry, plumbing, decorating, garden offices and modular homes. It displays FMB approval.
9. TP Renovations
Established in 2010, TP Renovations is a renovation and refurbishment contractor rather than a showroom, covering a stated list of 18 London areas including Fulham, Kensington, Camden, Islington, Westminster, Shoreditch, Hackney, Canary Wharf, Chelsea, Greenwich, Clapham, Battersea, Wandsworth, Richmond and Croydon. Bathroom and kitchen renovation are the headline services, alongside full property refurbishment, loft conversions, house extensions and general maintenance. It links to a TrustATrader profile.
Every profile above is drawn from what the company publishes about itself, checked on 11 August 2026. None of it tells you how they contract, how they hold your money or what they warrant, because that is generally not published. Which is exactly why the five questions above are worth asking out loud.
When Beams is not the right choice for you
Worth saying, since we put ourselves first.
Beams is built for projects with real scope: a kitchen, a bathroom, an extension, a loft, a whole house. If you want one wall skimmed or a tap changed, a local tradesperson found through a directory will be faster and cheaper, and the structure around a Beams project is overhead you do not need.
It is a London and surrounding area service. Outside that, we are the wrong call.
And if you actively enjoy running a build, holding your own contracts with each trade and carrying the risk yourself, you will find the fixed price and the staged sign-offs constraining rather than reassuring. Some people genuinely prefer to project manage. That is a legitimate way to renovate and it is not what we sell.
How to choose between them
Start with the project, not the company. A loft or a side return points you at an extension specialist. A Grade II listed conversion points at a firm that has been through that planning route before. A south London whole-house refurbishment and a Mayfair fit-out are different businesses.
Then be honest about how much you want handled. Design and builder matching together, or just one half because you have the other sorted already.
If your project is a single room rather than a whole house, we have run the same exercise for the best kitchen renovation companies in London and the best bathroom renovation companies in London.
Then put the five questions to everyone on your shortlist, including us. Ask to see an actual fixed-price contract rather than being told the price is fixed. The answers will separate the shortlist faster than any portfolio.
FAQs
Is this an independent ranking?
No. Beams wrote this page and put itself first. There is no independent audit of London renovation companies, so any list you find is written by someone with a position. We have set out our criteria, dated our research and left the other companies ungraded rather than marking our own homework twice.
Is it better to use a renovation company than hire an architect and builder separately?
It depends on how much project management you want to do yourself. A design-and-build route puts one team on the hook for the whole job. Hiring your own architect and builder gives you more direct control, at the cost of coordinating them.
What should a renovation contract actually include?
A fixed price in writing before work starts, payment stages tied to sign-off points, and named responsibility for each part of the job. If what you have been given is an estimate rather than a fixed quote, the difference matters more than it looks.
How do I check a renovation company is legitimate before signing?
Ask for references you can call, check the insurance certificate yourself rather than taking their word, and be wary of a large deposit before any work starts. Those three checks catch most of it.
Do renovation companies offer payment protection?
Some do, most do not. Beams holds milestone payments securely and releases them when you approve each stage, behind a 12-month workmanship warranty. What that covers is worth reading before you compare it with anyone else's terms.
Find out what your project will cost
Tell us about your project and we will get you up to three comparable quotes from vetted London builders, all priced against the same written scope.