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The Perfectionist
Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in South East. No obligation free quote...
"Two storey extension" - HERNE HILL, job posted 12/01/25
Vidanov Building Services
Trusted and professional extension builder in South East. Experienced in all extension buildering work and keeping within budget and on quote. Vida...
"Loft conversion" - SE16, job posted 15/04/24
DUWIX BUILDING MAINTENANCE
DUWIX BUILDING MAINTENANCE are here to help customers who need an Extension Builder in South East. We offer a competitive rate to complete all your...
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...
Home Tranformers Ltd
At Home Tranformers Ltd we have been fitting bespoke bathrooms for over 10 years. We pride ourselves on being the go-to bathroom fitters for discer...
Ask Building
Need to find an Extension Builder near you for all your extension buildering work?
Ask Building provides a local, trusted extension builder...
AAA Design Decorators
AAA Design Decorators are here to help customers who need an Extension Builder in South East. We offer a competitive rate to complete all your exte...
AGRI CONSTRUCTION
Need to find an Extension Builder near you for all your extension buildering work?
AGRI CONSTRUCTION provides a local, trusted extension bu...
£42/hr
£263/day
South East Builders
South East Builders are here to help customers who need an Extension Builder in South East. We offer a competitive rate to complete all your extens...
£37/hr
£235/day
FRIERN BUILDING LTD
FRIERN BUILDING LTD is an established extension buildering business in South East. We come highly recommended and provide competitive quotes for yo...
£45/hr
£284/day
BERNARD CONSTRUCTION LTD
BERNARD CONSTRUCTION LTD are here to help customers who need an Extension Builder in South East. We offer a competitive rate to complete all your e...
£76/hr
£756/day
Chris Ellis Project Service
Chris Ellis
Based in Camberwell south east London we provide a turnkey service for Domestic and Commercial construction Projects from conception to compl...
£47/hr
£298/day
RM Building (London) Ltd
Trusted and professional extension builder in South East. Experienced in all extension buildering work and keeping within budget and on quote. RM B...
£41/hr
£260/day
CHRIS BALL & SON ROOFING LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£41/hr
£258/day
Casa Of Peckham London
The Casa Shop is nestled in the heart of Peckham, London. Established in 1998, we are specialist suppliers and installers of Eco Wood-Burning and G...
£43/hr
£265/day
Global Business BoxLttd
Global Business BoxLttd are here to help customers who need an Extension Builder in South East. We offer a competitive rate to complete all your ex...
£46/hr
£286/day
Baseline Build & Renovate
Trusted and professional extension builder in South East. Experienced in all extension buildering work and keeping within budget and on quote. Base...
£41/hr
£253/day
James Hall Property Solutions Ltd
James Hall Property Solutions Ltd is a trusted extension builder serving customers in South East and the surrounding area. Contact us to today to g...
£47/hr
£292/day
J&S Property Services
Our locally run, family building services company J&S Property Services has 65 years combined experience. We have been helping customers in London ...
Quickly find an Extension Builder in South East
Use these steps to find Extension Builders in South East for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in South East. 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 South East 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 - £26,312
Garden office - £10,312
Granny annexe - £87,312
Build a flat roof extension - £22,312
Convert a Garage - £16,312
Hip to gable loft conversion - £42,312
Convert a bungalow loft - £29,312
Build a dormer loft conversion - £42,312
Build a swimming pool - £81,312
Build a Mansard loft conversion - £52,312
Concrete foundations - £6,562
Underpin a building - £17,812
Two storey extension - £88,468
Convert a basement - £41,010
Side return extension - £45,010
Loft conversion - £36,675
Garage - £18,812
Single storey extension - £61,240
Outbuilding - £10,312
Install an RSJ - £2,512
Build a kitchen extension - £42,312
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