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QA's Pointing and Brick Repair
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in SW3. QA's Pointing and Brick Repair is a friendly and reliable company based in SW3 who con...
M & A UK Ltd
Relax... you have found a reliable extension builder in SW3. M & A UK Ltd is a friendly and reliable company based in SW3 who consider no job as to...
D & G Building & Decorating
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in SW3. No obligation free qu...
London Construction
London Construction is an established and experienced local extension builder in SW3. Please contact us for a free, no obligation quote and competi...
A to Z Builders Ltd
A to Z Builders Ltd are here to help customers who need an Extension Builder in SW3. We offer a competitive rate to complete all your extension bui...
F & F Building Services
F & F Building Services is an established extension buildering business in SW3. We come highly recommended and provide competitive quotes for your ...
Battersea Plumbers
kanreen
Need an Extension Builder in SW3? Battersea Plumbers has been helping local clients (5 mile radius) with their extension buildering jobs for many y...
H G Builders
H G Builders is an established and experienced local extension builder in SW3. Please contact us for a free, no obligation quote and competitive ra...
Phormwork
Phormwork are here to help customers who need an Extension Builder in SW3. We offer a competitive rate to complete all your extension buildering jo...
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...
Koncept Bathrooms
Need an Extension Builder in SW3? Koncept Bathrooms has been helping local clients (5 mile radius) with their extension buildering jobs for many ye...
TELEMARK CONSTRUCTION LTD
TELEMARK CONSTRUCTION LTD is a trusted extension builder serving customers in SW3 and the surrounding area. Contact us to today to get a competitiv...
£42/hr
£262/day
Leon
Leon is an established and experienced local extension builder in SW3. Please contact us for a free, no obligation quote and competitive rates. Cov...
£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 SW3. 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...
£40/hr
£247/day
KÖK London ltd.
Need an Extension Builder in SW3? KÖK London ltd. has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
£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...
£45/hr
£282/day
Vyas Design
Need to find an Extension Builder near you for all your extension buildering work?
Vyas Design provides a local, trusted extension builderi...
£41/hr
£253/day
FrontierstroyUK
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£26/hr
£26/day
London Design And Build
London Design And Build
Here at London Design and Build, our team of architects, interior designers, structural engineers and contractors, offer a bespoke, turn-key servic...
Quickly find an Extension Builder in SW3
Use these steps to find Extension Builders in SW3 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in SW3. 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 SW3 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 - £26,192

Garden office - £10,192

Granny annexe - £87,192

Build a flat roof extension - £22,192

Convert a Garage - £16,192

Hip to gable loft conversion - £42,192

Convert a bungalow loft - £29,192

Build a dormer loft conversion - £42,192

Build a swimming pool - £81,192

Build a Mansard loft conversion - £52,192

Concrete foundations - £6,442

Underpin a building - £17,692

Two storey extension - £88,288

Convert a basement - £39,660

Side return extension - £43,660

Loft conversion - £35,550

Garage - £18,692

Single storey extension - £58,840

Outbuilding - £10,192

Install an RSJ - £2,392

Build a kitchen extension - £42,192
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