From £18,716
, 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 £18,660
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 £18,964
Egham, TW20
Kandy Build and Construction Ltd is an established extension buildering business in TW20. We come highly recommended and provide competitive quotes...
From £18,932
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 £18,812
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 £18,556
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £18,596
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 £18,732
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 £18,756
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £18,940
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...

Builders charge between £18,556 (Deep Builders Ltd based in TW18) and £18,964 (Kandy Build and Construction Ltd based in TW20) in TW20 to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in TW20 by posting a job with HaMuch and we will send it to extension builders in TW20.
| Borough in London |
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| Garage in Egham |
| Garage in Staines |
| Garage in Virginia Water |
| Garage in Stanwell |
| Garage in Chertsey |
| Garage in Ashford |
| Garage in Windsor |
| Garage in Shepperton |
| Garage in Addlestone |
| Garage in Colnbrook |
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