From £6,466
, TW20
Need an Extension Builder in TW20? Keay Roofing Services Ltd has been helping local clients (10 mile radius) with their extension buildering jobs f...
From £6,410
EGPM LTD are here to help customers who need an Extension Builder in TW20. We offer a competitive rate to complete all your extension buildering jo...
From £6,714
Egham, TW20
Kandy Build and Construction Ltd is an established extension buildering business in TW20. We come highly recommended and provide competitive quotes...
From £6,682
ALPHA OMEGA BUILD LTD are here to help customers who need an Extension Builder in TW20. We offer a competitive rate to complete all your extension ...
From £6,562
From 2007 – 2015 David Rudelhoff (Founder and Director) was the Property Manager for a high profile, high net worth family. During that time, in ...
From £6,306
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,346
We have over 15 years of experience in the building trade. We are a small family run business and pride ourselves on our exceptional customer servi...
From £6,482
Need an Extension Builder in TW20? ABCXYZ has been helping local clients (10 mile radius) with their extension buildering jobs for many years. Get ...
From £6,506
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,690
Lead by designer Richard Gordon, GDC is a London and Berkshire based Design & Build firm with a vast amount of experience in both the residential a...

Concrete foundations range from the £6,306 (Deep Builders Ltd based in TW18) to £6,714 (Kandy Build and Construction Ltd based in TW20) in TW20.
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 TW20 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 - £17,766

Two storey extension - £88,400

Build a timber frame extension - £26,266

Build a swimming pool - £81,266

Single storey extension - £60,328

Side return extension - £44,497

Install an RSJ - £2,466

Outbuilding - £10,266

Build a Mansard loft conversion - £52,266

Loft conversion - £36,248

Build a kitchen extension - £42,266

Hip to gable loft conversion - £42,266

Granny annexe - £87,266

Garden office - £10,266

Convert a Garage - £16,266

Garage - £18,766

Build a flat roof extension - £22,266

Build a dormer loft conversion - £42,266

Concrete foundations - £6,516

Convert a bungalow loft - £29,266

Convert a basement - £40,497