From £6,298
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Knaphill. No obligation free qu...
From £6,586
Aerea is a trusted extension builder serving customers in Knaphill and the surrounding area. Contact us to today to get a competitive quote for ext...
From £6,530
Member since August 2026
Relax... you have found a reliable extension builder in Knaphill. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Knaphil...
From £6,442
Need an Extension Builder in Knaphill? VA Structures has been helping local clients (10 mile radius) with their extension buildering jobs for many ...
From £6,530
Trusted and professional extension builder in Knaphill. Experienced in all extension buildering work and keeping within budget and on quote. DC Bui...
From £6,562
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,682
DP Services is a fully insured friendly local company which has been trading since 2002 and delivers high quality building work in domestic extensi...
From £6,554
Hi we have 15 years of experience in building and construction industry our specialization is bathrooms and renovations please have a look at the w...
From £6,674
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,154
Elite Construction London Ltd has been one of the top providers of building and remodeling services in London for more than ten years.Our goal is ...

Concrete foundations range from the £6,154 (Elite Construction London Ltd based in TW8) to £6,682 (DP Services based in RG41) in Knaphill.
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 Knaphill by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Concrete Foundations near Woking | £43 | £277 |
| Concrete Foundations near New Haw | £43 | £273 |
| Concrete Foundations near Guildford | £53 | £298 |
| Concrete Foundations near Ascot | £41 | £276 |
| Concrete Foundations near Camberley | £41 | £283 |
| Concrete Foundations near Ash Vale | £41 | £277 |
| Concrete Foundations near Egham | £42 | £266 |
| Concrete Foundations near Farnborough | £41 | £273 |
| Concrete Foundations near Staines-upon-Thames | £42 | £269 |
| Concrete Foundations near Walton-on-Thames | £43 | £277 |
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 - £17,751

Two storey extension - £88,377

Build a timber frame extension - £26,251

Build a swimming pool - £81,251

Single storey extension - £60,024

Side return extension - £44,326

Install an RSJ - £2,451

Outbuilding - £10,251

Build a Mansard loft conversion - £52,251

Loft conversion - £36,105

Build a kitchen extension - £42,251

Hip to gable loft conversion - £42,251

Granny annexe - £87,251

Garden office - £10,251

Convert a Garage - £16,251

Garage - £18,751

Build a flat roof extension - £22,251

Build a dormer loft conversion - £42,251

Concrete foundations - £6,501

Convert a bungalow loft - £29,251

Convert a basement - £40,326