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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...
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in Whitehall. QA's Pointing and Brick Repair is a friendly and reliable company based in White...
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 ...
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...

Mansard loft conversions range from the cheapest installation of £51,976 (A to Z Builders Ltd based in SW1P) to the dearest of around £52,376 (CK Constructions & Development Ltd based in WC1N).
While these estimates give you a good idea how much you'll pay for a mansard loft conversion, the only way to get an accurate price is to get real quotes from real builders.
Get quotes to install a mansard loft conversion in Whitehall by posting a job with HaMuch and we'll send it to extension builders in Whitehall.
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 - £17,670

Two storey extension - £88,256

Build a timber frame extension - £26,170

Build a swimming pool - £81,170

Single storey extension - £58,408

Side return extension - £43,417

Install an RSJ - £2,370

Outbuilding - £10,170

Build a Mansard loft conversion - £52,170

Loft conversion - £35,348

Build a kitchen extension - £42,170

Hip to gable loft conversion - £42,170

Granny annexe - £87,170

Garden office - £10,170

Convert a Garage - £16,170

Garage - £18,670

Build a flat roof extension - £22,170

Build a dormer loft conversion - £42,170

Concrete foundations - £6,420

Convert a bungalow loft - £29,170

Convert a basement - £39,417