From £55,320
Highbury, N5
Trusted and professional extension builder in N5. Experienced in all extension buildering work and keeping within budget and on quote. CAPITAL CONS...
From £60,120
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 ...
From £55,320
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...
From £55,480
Brooks Builders & Decorators is an established extension buildering business in N5. We come highly recommended and provide competitive quotes for y...
From £55,000
Need an Extension Builder in N5? Bok Services Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many year...
From £53,080
Experienced extension builder ready to quote for your work. Nucleus Design Studio is the best extension builder in N5. No obligation free quotes an...
From £59,640
After spending 15 years working across various private practices, Richard decided to take the plunge and set up his own architecture and design com...
From £61,720
Mel Massey Studio, based in Finsbury Park, North London, offers interior design, interior styling and project management. With over 10 years of exp...
From £58,840
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...

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 - £17,606

Two storey extension - £88,158

Build a timber frame extension - £26,106

Build a swimming pool - £81,106

Single storey extension - £57,112

Side return extension - £42,688

Install an RSJ - £2,306

Outbuilding - £10,106

Build a Mansard loft conversion - £52,106

Loft conversion - £34,740

Build a kitchen extension - £42,106

Hip to gable loft conversion - £42,106

Granny annexe - £87,106

Garden office - £10,106

Convert a Garage - £16,106

Garage - £18,606

Build a flat roof extension - £22,106

Build a dormer loft conversion - £42,106

Concrete foundations - £6,356

Convert a bungalow loft - £29,106

Convert a basement - £38,688