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D & G Building & Decorating
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in SE11. No obligation free q...
"Basement conversion" - LAMBETH, job posted 02/05/25
A to Z Builders Ltd
A to Z Builders Ltd are here to help customers who need an Extension Builder in SE11. We offer a competitive rate to complete all your extension bu...
"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 SE11. No obligation free quo...
DUWIX BUILDING MAINTENANCE
DUWIX BUILDING MAINTENANCE are here to help customers who need an Extension Builder in SE11. We offer a competitive rate to complete all your exten...
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...
F & F Building Services
F & F Building Services is an established extension buildering business in SE11. We come highly recommended and provide competitive quotes for your...
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 SE11. We offer a competitive rate to complete all your extension ...
AGRI CONSTRUCTION
Need to find an Extension Builder near you for all your extension buildering work?
AGRI CONSTRUCTION provides a local, trusted extension bu...
BUILD TEAM
Need to find an Extension Builder near you for all your extension buildering work?
BUILD TEAM provides a local, trusted extension builderin...
£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...
£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...
£43/hr
£244/day
AL-KO Construction Ltd
Get an Extension Builder in SE11 who you can trust. AL-KO Construction Ltd provide friendly and reliable extension buildering services to the SE11 ...
£48/hr
£298/day
Propia Limited
Propia Limited is an established and experienced local extension builder in SE11. Please contact us for a free, no obligation quote and competitive...
£45/hr
£282/day
Finch Lockerbie
Relax... you have found a reliable extension builder in SE11. Finch Lockerbie is a friendly and reliable company based in SE11 who consider no job ...
£46/hr
£287/day
GILL BUILDING CONTRACTORS
Need an Extension Builder in SE11? GILL BUILDING CONTRACTORS has been helping local clients (5 mile radius) with their extension buildering jobs fo...
£45/hr
£282/day
Exquisite Build
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£48/hr
£295/day
Infinite CM
Infinite CM is an established and experienced local extension builder in SE11. Please contact us for a free, no obligation quote and competitive ra...
£44/hr
£275/day
Space Design Construction Services Ltd
Experienced extension builder ready to quote for your work. Space Design Construction Services Ltd is the best extension builder in SE11. No obliga...
Quickly find an Extension Builder in SE11
Use these steps to find Extension Builders in SE11 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in SE11. 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 SE11 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 - £26,232

Garden office - £10,232

Granny annexe - £87,232

Build a flat roof extension - £22,232

Convert a Garage - £16,232

Hip to gable loft conversion - £42,232

Convert a bungalow loft - £29,232

Build a dormer loft conversion - £42,232

Build a swimming pool - £81,232

Build a Mansard loft conversion - £52,232

Concrete foundations - £6,482

Underpin a building - £17,732

Two storey extension - £88,348

Convert a basement - £40,110

Side return extension - £44,110

Loft conversion - £35,925

Garage - £18,732

Single storey extension - £59,640

Outbuilding - £10,232

Install an RSJ - £2,432

Build a kitchen extension - £42,232
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