From £6,690
Need to find an Extension Builder near you for all your extension buildering work?
Main Construction provides a local, trusted extension bu...
From £6,122
Need an Extension Builder in RH12? MPS Home Improvements Ltd has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £6,578
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,242
Member since August 2026
H P Building Services Sussex is a one-stop solution for all your extension buildering needs. Establish over 10 years ago and covering 20 miles arou...
From £6,522
Need to find an Extension Builder near you for all your extension buildering work?
DPP Construction (David Price Partnership) provides a lo...
1 review
From £6,730
New build, complete refurbishment and renovation service. We provide a quality turnkey service in Central London , South West London
"Vpbuildesign installed a kitchen and bathroom at my property and did an absolutely excellent job. I could not have asked for better and would definitely recommend giving them the opportunity to complete any building work required as I found the work to be exceptional." - reviewed 21/06/23, LUCAS REID
From £6,418
R S Construction (Surrey) is an established extension buildering business in RH12. We come highly recommended and provide competitive quotes for yo...
From £6,202
ADO Builders is a trusted extension builder serving customers in RH12 and the surrounding area. Contact us to today to get a competitive quote for ...
From £6,282
We are a family run business we 40 years experience delivering multiple projects from new developments . Extension. Loft conversion. Including foun...
From £6,450
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Concrete foundations range from the £6,122 (MPS Home Improvements Ltd based in RH14) to £6,730 (Vpbuildesign Ltd based in KT11) in RH12.
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 RH12 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 Horsham | £38 | £265 |
| Concrete Foundations near Crawley | £38 | £255 |
| Concrete Foundations near Mid Sussex | £35 | £261 |
| Concrete Foundations near Horley | £38 | £258 |
| Concrete Foundations near Haywards Heath | £35 | £256 |
| Concrete Foundations near Burgess Hill | £36 | £240 |
| Concrete Foundations near Reigate | £40 | £270 |
| Concrete Foundations near Redhill | £41 | £269 |
| Concrete Foundations near Great Bookham | £42 | £281 |
| Concrete Foundations near East Grinstead | £37 | £259 |
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 - £17,674

Two storey extension - £88,260

Build a timber frame extension - £26,174

Build a swimming pool - £81,174

Single storey extension - £58,472

Side return extension - £43,453

Install an RSJ - £2,374

Outbuilding - £10,174

Build a Mansard loft conversion - £52,174

Loft conversion - £35,378

Build a kitchen extension - £42,174

Hip to gable loft conversion - £42,174

Granny annexe - £87,174

Garden office - £10,174

Convert a Garage - £16,174

Garage - £18,674

Build a flat roof extension - £22,174

Build a dormer loft conversion - £42,174

Concrete foundations - £6,424

Convert a bungalow loft - £29,174

Convert a basement - £39,453