From £6,586
Leatherhead, KT23
Hallmark Construction and Development Ltd are here to help customers who need an Extension Builder in KT23. We offer a competitive rate to complete...
From £6,650
Please visit our web site at for full detailed photos of previous projects and clients testimonials.
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From £6,618
Trusted and professional extension builder in KT23. Experienced in all extension buildering work and keeping within budget and on quote. St Peter T...
From £6,378
Need an Extension Builder in KT23? Albany Roofing & Guttering has been helping local clients (10 mile radius) with their extension buildering jobs ...
From £6,602
Trusted and professional extension builder in KT23. Experienced in all extension buildering work and keeping within budget and on quote. D HANSFORD...
From £6,850
Drytech Roofing Contractors Ltd is an established extension buildering business in KT23. We come highly recommended and provide competitive quotes ...
From £6,522
Need to find an Extension Builder near you for all your extension buildering work?
Living Oak provides a local, trusted extension builderin...
From £6,594
Relax... you have found a reliable extension builder in KT23. NEWLAND BUILDING SERVICES is a friendly and reliable company based in KT23 who consid...
From £6,394
Experienced extension builder ready to quote for your work. Charybdis Developments Ltd is the best extension builder in KT23. No obligation free qu...
From £6,458
Relax... you have found a reliable extension builder in KT23. Avbase Building Services Ltd is a friendly and reliable company based in KT23 who con...

Concrete foundations range from the £6,378 (Albany Roofing & Guttering based in KT22) to £6,850 (Drytech Roofing Contractors Ltd based in KT22) in KT23.
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 KT23 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 - £17,815

Two storey extension - £88,473

Build a timber frame extension - £26,315

Build a swimming pool - £81,315

Single storey extension - £61,304

Side return extension - £45,046

Install an RSJ - £2,515

Outbuilding - £10,315

Build a Mansard loft conversion - £52,315

Loft conversion - £36,705

Build a kitchen extension - £42,315

Hip to gable loft conversion - £42,315

Granny annexe - £87,315

Garden office - £10,315

Convert a Garage - £16,315

Garage - £18,815

Build a flat roof extension - £22,315

Build a dormer loft conversion - £42,315

Concrete foundations - £6,565

Convert a bungalow loft - £29,315

Convert a basement - £41,046