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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...
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...
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...
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...
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...
Flat roof extension cost in N5
A flat roof extension ranges from the cheapest of £21,928 (GS Fabric Ltd based in E2) to the dearest of £22,400 (Five Star Builder based in N16), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in N5 by posting a job with HaMuch. We'll send it to extension builders in N5.
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Estimates for common extension builder jobs in N5;
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.
Underpin a building - £17,665
Two storey extension - £88,247
Build a timber frame extension - £26,165
Build a swimming pool - £81,165
Single storey extension - £58,296
Side return extension - £43,354
Install an RSJ - £2,365
Outbuilding - £10,165
Build a Mansard loft conversion - £52,165
Loft conversion - £35,295
Build a kitchen extension - £42,165
Hip to gable loft conversion - £42,165
Granny annexe - £87,165
Garden office - £10,165
Convert a Garage - £16,165
Garage - £18,665
Build a flat roof extension - £22,165
Build a dormer loft conversion - £42,165
Concrete foundations - £6,415
Convert a bungalow loft - £29,165
Convert a basement - £39,354