Find affordable SW1Y extension builders
- Local extension builders SW1Y
- Job estimates from extension builders near you
- Local Extension Builders in London Boroughs
| Low | Average | High |
|---|---|---|
| £15 | £38 | £75 |
| Average hourly rate from 122 extension builders in SW1Y ex VAT or callout | ||
Average SW1Y extension builder hourly rate is £37
Range from the cheapest, mostly independent, £20 per hour and £20 per day (London Design And Build ) to the dearest, normally the best, £50 per hour and £243 per day (Builders GB).
Comparing hourly and daily rates of extension builders gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Click 'Get quotes' and describe your job and we will send it to your local extension builders for FREE.
Local extension builders SW1Y
London Projects Ltd
£37/hour
£231/day
Relax... you have found a reliable extension builder in SW1Y. London Projects Ltd is a friendly and reliable company based in SW1Y who consider no job as too big or too small. Qualified, professional extension builders with years of experience in the industry.
"Concrete foundation"
W1T
Elv8 Interiors
£39/hour
£243/day
Extension Builder in Greater London, W1B. Working within a 20 mile radius.
Originally established in 1996 ELV8 has set the highest standards within the building industry, achieving success by winning numerous gold awards for over two decades. We specialise in both the residential and commercial sectors, from small privat...
"Basement conversion"
LAMBETH
Adamko Dry Lining London
£39/hour
£243/day
Extension Builder in Greater London, WC2N. Working within a 5 mile radius.
Welcome to Adamko Interiors Ltd. We specialize in customized interior design solutions, prioritizing customer satisfaction and creating safe, comfortable spaces that reflect your unique style. Our experienced designers provide comprehensive servic...
Mayfair Design
£39/hour
£243/day
Extension Builder in SW1Y, W1J covering a 20 mile radius.
Experienced Extension Builder ready to quote for your work. Mayfair Design is the best Extension Builder in SW1Y. No obligation free quotes and many happy customers.
London Design And Build
£20/hour
£20/day
Extension Builder in Roehampton, SW1A. Working within a 20 mile radius.
Here at London Design and Build, our team of architects, interior designers, structural engineers and contractors, offer a bespoke, turn-key service throughout both the initial and later stages of any project. When it comes to any home renova...
Luxe Refurbs
£37/hour
£230/day
Extension Builder in SW1Y, W1J. Working within a 20 mile radius.
Luxe Refurbs is an established business in SW1Y. We come highly recommended and provide competitive quotes for your work.
We Love Build - Three Arches
£37/hour
£230/day
Extension Builder in SW1Y, W1J. Working within a 20 mile radius.
We Love Build - Three Arches is an established business in SW1Y. We come highly recommended and provide competitive quotes for your work.
We Love Build
£39/hour
£243/day
Extension Builder in Greater London, W1J. Working within a 20 mile radius.
We are a Design and Build Company, based in London.We focus on super prime and luxury residential renovations in and around London and internationallyOur services cover every single step of your project: from inception and planning together with y...
Big Mamma
£39/hour
£243/day
Big Mamma is an established and experienced local extension builder in SW1Y. Please contact us for a free, no obligation quote and competitive rates. Covering a 20 mile radius.
BATTERSEA BUILDERS
£37/hour
£232/day
BATTERSEA BUILDERS are here to help customers who need an Extension Builder in SW1Y. We offer a competitive rate to complete all your jobs to professional standards.
Cornerstone
£39/hour
£243/day
Extension Builder in SW1Y, W1F covering a 20 mile radius.
Experienced Extension Builder ready to quote for your work. Cornerstone is the best Extension Builder in SW1Y. No obligation free quotes and many happy customers.
Sehem Design
£39/hour
£243/day
Sehem Design are extension builders in SW1Y who work within a 20 mile radius. Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of work in SW1Y and testimonials.
The Maybria Group
£37/hour
£231/day
Trusted and professional extension builder in SW1Y. Experienced in all work and keeping within budget and on quote. The Maybria Group have many happy customers in SW1Y, testimonials available.
Future Homes Design and Build
£37/hour
£231/day
Extension Builder in SW1Y, W1K covering a 20 mile radius.
Experienced Extension Builder ready to quote for your work. Future Homes Design and Build is the best Extension Builder in SW1Y. No obligation free quotes and many happy customers.
Starfish Properties
£37/hour
£231/day
Extension Builder in SW1Y, W1S. Covering 20 mile radius.
Starfish Properties is a trusted Extension Builder serving customers in SW1Y and the surrounding area. Contact us to today to get a competitive quote for work in SW1Y. We offer value for money and quality to our customers, we pride ourselves on the positive feedback.
Builders GB
£50/hour
£200/day
Relax... you have found a reliable extension builder in SW1Y. Builders GB is a friendly and reliable company based in SW1Y who consider no job as too big or too small. Qualified, professional extension builders with years of experience in the industry.
Pillar Contractors Ltd
£37/hour
£230/day
Need to find an Extension Builder near you for all your work?
Pillar Contractors Ltd provides a local, trusted service in and around SW1Y. Homeowners and landlords choose us for our excellent knowledge, experience and reliability plus reasonable call-out fees if applicable and no obligation quotes.
Dominic Payte - Design & Build
£37/hour
£231/day
Extension Builder in SW1Y, W1S. Working within a 20 mile radius.
Dominic Payte - Design & Build is an established business in SW1Y. We come highly recommended and provide competitive quotes for your work.
Pimlico Building Ltd
£36/hour
£229/day
Extension Builder in SW1Y, SW1V.
Need an Extension Builder in SW1Y? Pimlico Building Ltd has been helping local clients (20 mile radius) with their jobs for many years. Get a quote today.
A to Z Builders Ltd
£37/hour
£235/day
A to Z Builders Ltd are here to help customers who need an Extension Builder in SW1Y. We offer a competitive rate to complete all your jobs to professional standards.
Quickly find an Extension Builder in SW1Y
Use these steps to find Extension Builders in SW1Y for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in SW1Y. We’ll notify you via text or email when an Extension Builder is available to quote.
- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local SW1Y Extension Builders or phone them directly - you’re in control!
The most important thing is do avoid handing over cash or paying large sums in advance. Be wary of paying cash for a cheaper job, i.e. to avoid VAT, you may be going down a slippery slope of not doing things properly which may eventually mean your job is also not done properly.
Agree when you intend to pay, ideally after you are satisfied with the completed job. If it is a big job agree a schedule of staged payments which is fair to both parties.
To avoid bad tradespeople and to ensure you can find them should they not answer a mobile;
- Get proper contact details and check them yourself
- Check if the company is verified on the Companies House website
- Get phone details, ideally a land line or 0800 number and check it
- Get a physical office address
Get quotes in writing by email or in person if possible. Getting quotes online or by text is ok (make sure you accept the offer by replying). For large projects make a written agreement, schedule of works and snagging plans as part of a working document. Also;
- Agree expected quality of workmanship and materials in advance
- When will work start and when will project be finished, what happens if project over runs ?
- How long is the guarantee on work and materials eg 12 months
- Discuss onsite behaviour in advance (no smoking, swearing or using mobile phones for non-work purposes)
- Agree that your Extension Builder will remove all debris and rubbish and what level of tidying up you want after job
Local Extension Builders in London Boroughs
Job estimates from extension builders near you
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.
Timber frame extension - £25,904
Garden office - £9,904
Granny annexe - £86,904
Flat roof extension - £21,904
Garage conversion - £15,904
Hip to gable loft conversion - £41,904
Bungalow loft conversion - £28,904
Dormer loft conversion - £41,904
Swimming pool - £80,904
Mansard loft conversion - £51,904
Concrete foundation - £6,154
Underpinning - £17,404
Two storey extension - £87,856
Basement conversion - £36,420
Side return extension - £40,420
Loft conversion - £32,850
Garage - £18,404
Single storey extension - £53,080
Outbuilding - £9,904
RSJ installation - £2,104
Kitchen extension - £41,904
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