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SH Enterprise
Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
"Underpin a building" - N7, job posted 23/08/26
Five Star Builder
Experienced extension builder ready to quote for your work. Five Star Builder is the best extension builder in N5. No obligation free quotes and ma...
"Need an extension builder" - N4, job posted 18/05/25
London Trowel Co.
Relax... you have found a reliable extension builder in N5. London Trowel Co. is a friendly and reliable company based in N5 who consider no job as...
"RSJ re-installation" - N16, job posted 10/04/25
Thermodynamic Building Services Ltd
Trusted and professional extension builder in N5. Experienced in all extension buildering work and keeping within budget and on quote. Thermodynami...
"Having planning permission, having structure drawing, about 40 square metres basement extension, looking for builders, want to be done ASAP." - N7, job posted 15/12/23
First guard Roofing
Darren Bergin
Relax... you have found a reliable extension builder in N5. First guard Roofing is a friendly and reliable company based in N5 who consider no job ...
GS Fabric Ltd
GS Fabric Ltd is an established and experienced local extension builder in N5. Please contact us for a free, no obligation quote and competitive ra...
Andreas Thomas Demetri
Andreas Thomas Demetri is a trusted extension builder serving customers in N5 and the surrounding area. Contact us to today to get a competitive qu...
Buildwiser
Buildwiser is a trusted extension builder serving customers in N5 and the surrounding area. Contact us to today to get a competitive quote for exte...
Carbin Canopy
Relax... you have found a reliable extension builder in N5. Carbin Canopy is a friendly and reliable company based in N5 who consider no job as too...
Amastic Roofing Building and Scaffolding Services Ltd
Trusted and professional extension builder in N5. Experienced in all extension buildering work and keeping within budget and on quote. Amastic Roof...
Brooks Builders & Decorators
Brooks Builders & Decorators is an established extension buildering business in N5. We come highly recommended and provide competitive quotes for y...
DLER SINGH D S BUILDERS
DLER SINGH D S BUILDERS are here to help customers who need an Extension Builder in N5. We offer a competitive rate to complete all your extension ...
COMPLETE BUILDING COMPANY
Frankie
COMPLETE BUILDING COMPANY are here to help customers who need an Extension Builder in N5. We offer a competitive rate to complete all your extensio...
D B Duri Building
D B Duri Building are here to help customers who need an Extension Builder in N5. We offer a competitive rate to complete all your extension builde...
£46/hr
£293/day
BM Lofts Limited
Need an Extension Builder in N5? BM Lofts Limited has been helping local clients (5 mile radius) with their extension buildering jobs for many year...
£45/hr
£282/day
M Collins Builders Ltd
Michael Collins Builders are experts in domestic conversions and extensions - drawing on over 25 years experience in the trade. We have built up a ...
£42/hr
£260/day
E T W Building Services
Greater London, N5
This business has not added a description yet.
£43/hr
£268/day
FISKA DESIGN & BUILD
FISKA DESIGN & BUILD are here to help customers who need an Extension Builder in N5. We offer a competitive rate to complete all your extension bui...
£41/hr
£255/day
Maddison & Sons
Maddison & sons pride ourselves on attention to detail at the highest level.With an extensive background As Mains Contractors in construction fabri...
£43/hr
£267/day
Brothers Group
Our building services company Brothers Group have been helping customers in North, East and West London and the surrounding area by providing profe...
Quickly find an Extension Builder in N5
Use these steps to find Extension Builders in N5 for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in N5. 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 N5 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 - £26,200
Garden office - £10,200
Granny annexe - £87,200
Build a flat roof extension - £22,200
Convert a Garage - £16,200
Hip to gable loft conversion - £42,200
Convert a bungalow loft - £29,200
Build a dormer loft conversion - £42,200
Build a swimming pool - £81,200
Build a Mansard loft conversion - £52,200
Concrete foundations - £6,450
Underpin a building - £17,700
Two storey extension - £88,300
Convert a basement - £39,750
Side return extension - £43,750
Loft conversion - £35,625
Garage - £18,700
Single storey extension - £59,000
Outbuilding - £10,200
Install an RSJ - £2,400
Build a kitchen extension - £42,200
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