Torrington Design
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
Relax... you have found a reliable extension builder in Whitehall. M & A UK Ltd is a friendly and reliable company based in Whitehall who consider ...
Jay Reid
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in Whitehall. No obligation f...
CK Constructions & Development Ltd is a trusted extension builder serving customers in Whitehall and the surrounding area. Contact us to today to g...
A to Z Builders Ltd are here to help customers who need an Extension Builder in Whitehall. We offer a competitive rate to complete all your extensi...
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Whitehall. No obligation fre...
JK Doors is a trusted extension builder serving customers in Whitehall and the surrounding area. Contact us to today to get a competitive quote for...
JM Building Services is a trusted extension builder serving customers in Whitehall and the surrounding area. Contact us to today to get a competiti...

Outbuilding costs in Whitehall range from the cheapest of £9,976 (A to Z Builders Ltd based in SW1P) to the dearest of £12,320 (Reid and Co Developments Ltd based in NW8), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in Whitehall by posting a job with HaMuch and we will send it to extension builders.
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 - £17,884

Two storey extension - £88,576

Build a timber frame extension - £26,384

Build a swimming pool - £81,384

Single storey extension - £62,680

Side return extension - £45,820

Install an RSJ - £2,584

Outbuilding - £10,384

Build a Mansard loft conversion - £52,384

Loft conversion - £37,350

Build a kitchen extension - £42,384

Hip to gable loft conversion - £42,384

Granny annexe - £87,384

Garden office - £10,384

Convert a Garage - £16,384

Garage - £18,884

Build a flat roof extension - £22,384

Build a dormer loft conversion - £42,384

Concrete foundations - £6,634

Convert a bungalow loft - £29,384

Convert a basement - £41,820