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J&J Building Solutions
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Streatham. No obligation free q...
"Single storey extension" - BALHAM, job posted 26/02/25
Greens Gardening & Landscape Property Maintenance
John Mcdonagh
Watch our short video highlighting all our expertise and services here:
more than 10 y...
"Loft conversion- 2 beds and a bathroom" - SW17, job posted 09/01/24
£80/hr
£400/day
Banga Decoration
Sebastian Banga
Member since August 2025
Banga decoration. Is Base in south London for number of year Banga decoration is a small company. Wich provide an excellent job to the custom...
"Side return extension" - CR4, job posted 08/09/23
Buci builders ltd
Robert Buci
Buci builders ltd is a trusted extension builder serving customers in Streatham and the surrounding area. Contact us to today to get a competitive ...
Langston Builders
Langston Builders is a trusted extension builder serving customers in Streatham and the surrounding area. Contact us to today to get a competitive ...
Tenfold Renovation
Tenfold Renovation
Need to find an Extension Builder near you for all your extension buildering work?
Tenfold Renovation provides a local, trusted extension b...
RCB Group Design & Build
Vasi J
No Call out charges!
All Jobs Fully Insured and Guaranteed !!!
All aspects of Plumbing, Heating and Drains....
..."I am very pleased with the work carried out. All very clear and transparent." - ROMFORD,reviewed 10/01/18, KELLY
PW Construction & Renovation Ltd
Streatham, SW16
PW Construction & Renovation Ltd is a trusted extension builder serving customers in Streatham and the surrounding area. Contact us to today to get...
PRM BUILDING
Relax... you have found a reliable extension builder in Streatham. PRM BUILDING is a friendly and reliable company based in Streatham who consider ...
QSA Builders Ltd
QSA Builders Ltd are here to help customers who need an Extension Builder in Streatham. We offer a competitive rate to complete all your extension ...
RAJANIS CONSTRUCTION
Relax... you have found a reliable extension builder in Streatham. RAJANIS CONSTRUCTION is a friendly and reliable company based in Streatham who c...
Local Building Services
Streatham, SW16
Trusted and professional extension builder in Streatham. Experienced in all extension buildering work and keeping within budget and on quote. Local...
PROBUILDER
PROBUILDER is a trusted extension builder serving customers in Streatham and the surrounding area. Contact us to today to get a competitive quote f...
BUILD WORLD LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
K S BUILDERS (UK) LTD
Trusted and professional extension builder in Streatham. Experienced in all extension buildering work and keeping within budget and on quote. K S B...
A & P Master Construction
Experienced extension builder ready to quote for your work. A & P Master Construction is the best extension builder in Streatham. No obligation fre...
R C BUILDER
R C BUILDER is a trusted extension builder serving customers in Streatham and the surrounding area. Contact us to today to get a competitive quote ...
Mayfair Construction uk
Experienced extension builder ready to quote for your work. Mayfair Construction uk is the best extension builder in Streatham. No obligation free ...
Astraway Construction Ltd.
Raymond Zmuda
Trusted and professional extension builder in Streatham. Experienced in all extension buildering work and keeping within budget and on quote. Astra...
Quality Carpentry
Quality Carpentry is a trusted extension builder serving customers in Streatham and the surrounding area. Contact us to today to get a competitive ...
Quickly find an Extension Builder in Streatham
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- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in Streatham. 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 Streatham 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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