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Rafix Building
Rafal Szczepanski
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
"Underpinning" - N20, job posted 01/03/26
WT Construction Service Ltd
Need the extension buildering job done quickly without breaking the bank? WT Construction Service Ltd offer fast, reliable, and affordable extensio...
"Loft conversion" - N20, job posted 11/01/24
New Finishes
New Finishes is a trusted extension builder serving customers in Whetstone and the surrounding area. Contact us to today to get a competitive quote...
Pavillion Building Services
Relax... you have found a reliable extension builder in Whetstone. Pavillion Building Services is a friendly and reliable company based in Whetston...
Homeland Building Ltd
Homeland Building Ltd is a trusted extension builder serving customers in Whetstone and the surrounding area. Contact us to today to get a competit...
Wittick Building Ltd
Wittick Building Ltd is a trusted extension builder serving customers in Whetstone and the surrounding area. Contact us to today to get a competiti...
Roni Lofts Conversions Ltd
Need an Extension Builder in Whetstone? Roni Lofts Conversions Ltd has been helping local clients (10 mile radius) with their extension buildering ...
Onyx Iv
Ivaylo Shkodrov
Extremely reliable service . Flexibility, correct, listening customer. Wide experience.
Taylor Construction Services Ltd
Relax... you have found a reliable extension builder in Whetstone. Taylor Construction Services Ltd is a friendly and reliable company based in Whe...
Raf's Building Service
Need to find an Extension Builder near you for all your extension buildering work?
Raf's Building Service provides a local, trusted extensi...
Odp Builders
Need an Extension Builder in Whetstone? Odp Builders has been helping local clients (5 mile radius) with their extension buildering jobs for many y...
Homeworks Design & Build Ltd
Whetstone London, N20
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
D.J Coyle & Co.Ltd
Trusted and professional extension builder in Whetstone. Experienced in all extension buildering work and keeping within budget and on quote. D.J C...
A Sparky Technical Building Services
Relax... you have found a reliable extension builder in Whetstone. A Sparky Technical Building Services is a friendly and reliable company based in...
Reix London Ltd
Building services company Reix London Ltd has been helping customers in North London and the surrounding area for over 10 years providing professio...
Home Projects
Relax... you have found a reliable extension builder in Whetstone. Home Projects is a friendly and reliable company based in Whetstone who consider...
Mansarda Ltd
Need to find an Extension Builder near you for all your extension buildering work?
Mansarda Ltd provides a local, trusted extension builder...
R & I Builders
R & I Builders is an established extension buildering business in Whetstone. We come highly recommended and provide competitive quotes for your wor...
Chelebi Builders
Chelebi Builders is a bespoke Build & Design construction company based in North London. Our expertise range from Loft Conversions, Extensions, Hou...
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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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