How HaMuch saves you money
Post your job for free
We send your job to ALL SW12 extension builders
Compare quotes
Available extension builders in SW12 reply
Save Money
Select your affordable SW12 extension builder
Post your job
London Construction
London Construction is an established and experienced local extension builder in SW12. Please contact us for a free, no obligation quote and compet...
"Single storey extension" - SW18, job posted 23/03/26
QA's Pointing and Brick Repair
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in SW12. QA's Pointing and Brick Repair is a friendly and reliable company based in SW12 who c...
"A 8 meter by 1 story high wall to removed clear way and rebuild" - SW4, job posted 18/08/25
Langston Builders
Langston Builders is a trusted extension builder serving customers in SW12 and the surrounding area. Contact us to today to get a competitive quote...
"To divide a room" - SW2, job posted 08/07/25
Renaissance Timothy Brewer Ltd
Renaissance Timothy Brewer Ltd is an established extension buildering business in SW12. We come highly recommended and provide competitive quotes f...
"**St George's Hospital Toilets & Washrooms Refurbishment – £450K Opportunity** St George’s University Hospitals NHS Foundation Trust invites bids for the refurbishment of toilets and washrooms at St George’s Hospital, Tooting (SW17 0QT). Total contract value is £450,000. Project runs from..." - SW17, job posted 15/05/25
PW Construction & Renovation Ltd
PW Construction & Renovation Ltd is a trusted extension builder serving customers in SW12 and the surrounding area. Contact us to today to get a co...
"Single storey extension" - BALHAM, job posted 26/02/25
D & G Building & Decorating
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in SW12. No obligation free q...
"Loft conversion- 2 beds and a bathroom" - SW17, job posted 09/01/24
PRM BUILDING
Relax... you have found a reliable extension builder in SW12. PRM BUILDING is a friendly and reliable company based in SW12 who consider no job as ...
QSA Builders Ltd
QSA Builders Ltd are here to help customers who need an Extension Builder in SW12. We offer a competitive rate to complete all your extension build...
Local Building Services
Trusted and professional extension builder in SW12. Experienced in all extension buildering work and keeping within budget and on quote. Local Buil...
R C BUILDER
R C BUILDER is a trusted extension builder serving customers in SW12 and the surrounding area. Contact us to today to get a competitive quote for e...
Mayfair Construction uk
Experienced extension builder ready to quote for your work. Mayfair Construction uk is the best extension builder in SW12. No obligation free quote...
Astraway Construction Ltd.
Raymond Zmuda
Trusted and professional extension builder in SW12. Experienced in all extension buildering work and keeping within budget and on quote. Astraway C...
Quality Carpentry
Quality Carpentry is a trusted extension builder serving customers in SW12 and the surrounding area. Contact us to today to get a competitive quote...
Battersea Plumbers
kanreen
Need an Extension Builder in SW12? Battersea Plumbers has been helping local clients (5 mile radius) with their extension buildering jobs for many ...
Complete Construction London Limited
Complete Construction London Limited is a trusted extension builder serving customers in SW12 and the surrounding area. Contact us to today to get ...
Soceanu Construction Ltd
John Soceanu
We offer expert restoration and refurbishment services designed to breathe new life into your property. Whether you’re looking to restore a histo...
Newspace Interiors
Newspace Interiors is an established extension buildering business in SW12. We come highly recommended and provide competitive quotes for your work...
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...
Quickly find an Extension Builder in SW12
Use these steps to find Extension Builders in SW12 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in SW12. 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 SW12 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 - £26,168
Garden office - £10,168
Granny annexe - £87,168
Build a flat roof extension - £22,168
Convert a Garage - £16,168
Hip to gable loft conversion - £42,168
Convert a bungalow loft - £29,168
Build a dormer loft conversion - £42,168
Build a swimming pool - £81,168
Build a Mansard loft conversion - £52,168
Concrete foundations - £6,418
Underpin a building - £17,668
Two storey extension - £88,252
Convert a basement - £39,390
Side return extension - £43,390
Loft conversion - £35,325
Garage - £18,668
Single storey extension - £58,360
Outbuilding - £10,168
Install an RSJ - £2,368
Build a kitchen extension - £42,168
People in SW12 searching for a Extension Builder also viewed...
The Largest Database of UK Trade Rates
At HaMuch we know what tradespeople charge because we have the largest database of rates anywhere in the UK. If you want quotes for jobs at the right price for you, post your jobs with HaMuch and get your home improvements kickstarted straight away!