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From 2007 – 2015 David Rudelhoff (Founder and Director) was the Property Manager for a high profile, high net worth family. During that time, in ...
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 £42,720
Egham, TW20
Kandy Build and Construction Ltd is an established extension buildering business in TW20. We come highly recommended and provide competitive quotes...
From £39,930
Need an Extension Builder in TW20? Keay Roofing Services Ltd has been helping local clients (10 mile radius) with their extension buildering jobs f...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in TW20 by posting a job with HaMuch and we will send it to extension builders in TW20.
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 - £17,788

Two storey extension - £88,432

Build a timber frame extension - £26,288

Build a swimming pool - £81,288

Single storey extension - £60,760

Side return extension - £44,740

Install an RSJ - £2,488

Outbuilding - £10,288

Build a Mansard loft conversion - £52,288

Loft conversion - £36,450

Build a kitchen extension - £42,288

Hip to gable loft conversion - £42,288

Granny annexe - £87,288

Garden office - £10,288

Convert a Garage - £16,288

Garage - £18,788

Build a flat roof extension - £22,288

Build a dormer loft conversion - £42,288

Concrete foundations - £6,538

Convert a bungalow loft - £29,288

Convert a basement - £40,740