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London Construction
London Construction is an established and experienced local extension builder in SW4. Please contact us for a free, no obligation quote and competi...
"A 8 meter by 1 story high wall to removed clear way and rebuild" - SW4, job posted 18/08/25
QA's Pointing and Brick Repair
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in SW4. QA's Pointing and Brick Repair is a friendly and reliable company based in SW4 who con...
"To divide a room" - SW2, job posted 08/07/25
D & G Building & Decorating
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in SW4. No obligation free qu...
"Extension to lower ground area." - SW9, job posted 28/03/25
Cornerstones Construction
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in SW4. No obligation free quot...
"Single storey extension" - BALHAM, job posted 26/02/25
Building and Plastering Solution
Peter Cesma
Experienced builder in all aspects of building works. All work guaranteed. Quality finish, promt ,honest and reliable services. Public liabil...
"Two storey extension" - HERNE HILL, job posted 12/01/25
R C BUILDER
R C BUILDER is a trusted extension builder serving customers in SW4 and the surrounding area. Contact us to today to get a competitive quote for ex...
Quality Carpentry
Quality Carpentry is a trusted extension builder serving customers in SW4 and the surrounding area. Contact us to today to get a competitive quote ...
Battersea Plumbers
kanreen
Need an Extension Builder in SW4? Battersea Plumbers has been helping local clients (5 mile radius) with their extension buildering jobs for many y...
Complete Construction London Limited
Complete Construction London Limited is a trusted extension builder serving customers in SW4 and the surrounding area. Contact us to today to get a...
Beaufort Construction London Ltd
Beaufort Construction London specialises in the design, build and project management of both residential and commercial construction projects throu...
Pure Contractors Ltd
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
BUILD TEAM
Need to find an Extension Builder near you for all your extension buildering work?
BUILD TEAM provides a local, trusted extension builderin...
£41/hr
£255/day
Interior Space Solutions Ltd
Interior Space Solutions Ltd (Trading as Loft Concept ) are a trustworthy and reliable company that undertake Loft Conversion and Kitchen Extension...
£40/hr
£248/day
Palm Property Developments Ltd
Experienced extension builder ready to quote for your work. Palm Property Developments Ltd is the best extension builder in SW4. No obligation free...
£46/hr
£287/day
HillMagee
HillMagee is a refurbishment and building company that specialise in residential projects. We pride ourselves on being able to offer a wide range o...
£45/hr
£323/day
JT Allen
Jason Allen
Many years experience in extending families homes. Single and double storey extensions. Loft and garage conversions and refurbishing homes
£40/hr
£247/day
KÖK London ltd.
Need an Extension Builder in SW4? KÖK London ltd. has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
£45/hr
£282/day
M. Watkins and Sons Ltd
M. Watkins and Sons Ltd is an established and experienced local extension builder in SW4. Please contact us for a free, no obligation quote and com...
£50/hr
£312/day
Loran Design and Build Ltd
Our building services company Loran Design and Build Ltd was established in 2020 but have been providing customers in Clapham and the surrounding a...
£48/hr
£307/day
South London Conversions Ltd
Relax... you have found a reliable extension builder in SW4. South London Conversions Ltd is a friendly and reliable company based in SW4 who consi...
Quickly find an Extension Builder in SW4
Use these steps to find Extension Builders in SW4 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in SW4. 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 SW4 Extension Builders or phone them directly - you’re in control!
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.
Build a timber frame extension - £26,184
Garden office - £10,184
Granny annexe - £87,184
Build a flat roof extension - £22,184
Convert a Garage - £16,184
Hip to gable loft conversion - £42,184
Convert a bungalow loft - £29,184
Build a dormer loft conversion - £42,184
Build a swimming pool - £81,184
Build a Mansard loft conversion - £52,184
Concrete foundations - £6,434
Underpin a building - £17,684
Two storey extension - £88,276
Convert a basement - £39,570
Side return extension - £43,570
Loft conversion - £35,475
Garage - £18,684
Single storey extension - £58,680
Outbuilding - £10,184
Install an RSJ - £2,384
Build a kitchen extension - £42,184
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