From £6,210
Greater London, N17
Need to find an Extension Builder near you for all your extension buildering work?
Nicky Price provides a local, trusted extension builderi...
From £6,490
JMP Contractors & Engineers are here to help customers who need an Extension Builder in N17. We offer a competitive rate to complete all your exten...
From £6,450
Londonderry, N17
Experienced extension builder ready to quote for your work. R&S services Ltd is the best extension builder in N17. No obligation free quotes and ma...
From £6,378
GG CONSTRUCTION LTD is a trusted extension builder serving customers in N17 and the surrounding area. Contact us to today to get a competitive quot...
From £6,506
Greater London, N17
We are an architecture basis refurbishment company. We do not offer our clients just a designed spaces, we offer them living areas. However, The ch...
From £6,218
Painting and decorating, plastering, kitchen and bathroom renovation extension roofing etc
From £6,418
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,642
PS Contractors is an established and experienced local extension builder in N17. Please contact us for a free, no obligation quote and competitive ...
From £6,506
Tottenham, N17
KJV CONSTRUCTION LTD is an established and experienced local extension builder in N17. Please contact us for a free, no obligation quote and compet...

Concrete foundations range from the £5,850 (ADD CONSTRUCTION (LONDON) LTD based in N15) to £6,642 (PS Contractors based in N17) in N17.
Comparing extension builders estimates for laying concrete foundations gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Find out the exact cost of laying concrete foundations in N17 by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
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 - £17,617

Two storey extension - £88,175

Build a timber frame extension - £26,117

Build a swimming pool - £81,117

Single storey extension - £57,336

Side return extension - £42,814

Install an RSJ - £2,317

Outbuilding - £10,117

Build a Mansard loft conversion - £52,117

Loft conversion - £34,845

Build a kitchen extension - £42,117

Hip to gable loft conversion - £42,117

Granny annexe - £87,117

Garden office - £10,117

Convert a Garage - £16,117

Garage - £18,617

Build a flat roof extension - £22,117

Build a dormer loft conversion - £42,117

Concrete foundations - £6,367

Convert a bungalow loft - £29,117

Convert a basement - £38,814