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J&S WALLINGTON LIMITED
We provide our clients with excellent service and quality. Whether you are looking to extend or upgrade, our professional team has the skills and e...
"Convert a Garage" - SE13, job posted 14/09/26
Our Builders Ltd
Max Dixon
We are a construction company specialising in all aspects of building works, loft construction Extension complete home renovation, structural ...
"Dormer loft conversion" - SE3, job posted 30/08/25
Jmc buildets
Jay Christenson
Experienced extension builder ready to quote for your work. Jmc buildets is the best extension builder in Lewisham. No obligation free quotes and m...
"Loft conversion" - SE3, job posted 18/03/24
RLD Contractors Ltd
RLD Contractors Ltd is an established and experienced local extension builder in Lewisham. Please contact us for a free, no obligation quote and co...
Rapid Bee Ltd
Rapid Bee Ltd is an established extension buildering business in Lewisham. We come highly recommended and provide competitive quotes for your work....
S G Painting Contractor Ltd
Relax... you have found a reliable extension builder in Lewisham. S G Painting Contractor Ltd is a friendly and reliable company based in Lewisham ...
JEM BUILDING CONTRACTORS LTD
Need to find an Extension Builder near you for all your extension buildering work?
JEM BUILDING CONTRACTORS LTD provides a local, trusted e...
South East Builders
South East Builders are here to help customers who need an Extension Builder in Lewisham. We offer a competitive rate to complete all your extensio...
£41/hr
£253/day
GreenGauge Heating Limited
Jeremy Weston, trading as GreenGauge has over 10 years experience working as a Heating Engineer. Fully Insured and Gas Safe Registered.Base...
£42/hr
£262/day
S W BUILDPROVEMENT
Whether you are looking to build, extend or upgrade we will help. From building to decorating. Our professional team have the skills and experie...
£47/hr
£298/day
RM Building (London) Ltd
Trusted and professional extension builder in Lewisham. Experienced in all extension buildering work and keeping within budget and on quote. RM Bui...
£46/hr
£288/day
GREENWICH CONSTRUCTION
Relax... you have found a reliable extension builder in Lewisham. GREENWICH CONSTRUCTION is a friendly and reliable company based in Lewisham who c...
£44/hr
£284/day
Prestige Roofing Limited
Ricky Fuller
Experienced extension builder ready to quote for your work. Prestige Roofing Limited is the best extension builder in Lewisham. No obligation free ...
£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...
£43/hr
£270/day
AADO SERVICES LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£41/hr
£255/day
Dule Vida Property Design Ltd
Lewisham Greater London, SE13
Dule Vida Property Design Ltd is a trusted extension builder serving customers in Lewisham and the surrounding area. Contact us to today to get a c...
£45/hr
£284/day
JBS BUILDERS
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£45/hr
£280/day
TP Building & Development Services Ltd
Greater London, SE13
TP Building & Development Services Ltd is an established and experienced local extension builder in Lewisham. Please contact us for a free, no obli...
£44/hr
£277/day
Demiri Builder Ltd
Our building services company Demiri Builder Ltd has 15 years’ experience in the industry. We have been helping customers in Lewisham and the sur...
£52/hr
£281/day
21st Century Design & Build Ltd
21st Century Design & Build Ltd is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 5 miles ar...
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Use these steps to find Extension Builders in Lewisham for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in Lewisham. 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 Lewisham 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 - £26,136
Garden office - £10,136
Granny annexe - £87,136
Build a flat roof extension - £22,136
Convert a Garage - £16,136
Hip to gable loft conversion - £42,136
Convert a bungalow loft - £29,136
Build a dormer loft conversion - £42,136
Build a swimming pool - £81,136
Build a Mansard loft conversion - £52,136
Concrete foundations - £6,386
Underpin a building - £17,636
Two storey extension - £88,204
Convert a basement - £39,030
Side return extension - £43,030
Loft conversion - £35,025
Garage - £18,636
Single storey extension - £57,720
Outbuilding - £10,136
Install an RSJ - £2,336
Build a kitchen extension - £42,136
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