From £52,304
Southall, UB2
JD Construction is an established and experienced local extension builder in UB2. Please contact us for a free, no obligation quote and competitive...
From £51,992
Gallant Contractors have partnered with Homeowners, Designers and Architects to deliver unrivalled construction, renovation, double glazing and ref...
From £52,008
Relax... you have found a reliable extension builder in UB2. Randhawa Design & Build Ltd is a friendly and reliable company based in UB2 who consid...
From £51,440
Experienced extension builder ready to quote for your work. Kairon Construction is the best extension builder in UB2. No obligation free quotes and...
From £52,184
Need to find an Extension Builder near you for all your extension buildering work?
Adrians Building Services Ltd provides a local, trusted ...
From £52,376
D.S Builders is a trusted extension builder serving customers in UB2 and the surrounding area. Contact us to today to get a competitive quote for e...
From £52,360
JP CONSTRUCTION is an established extension buildering business in UB2. We come highly recommended and provide competitive quotes for your work.
From £52,224
Image Design & Consultants is a trusted extension builder serving customers in UB2 and the surrounding area. Contact us to today to get a competiti...
From £52,440
Need to find an Extension Builder near you for all your extension buildering work?
Python Kitchen provides a local, trusted extension build...
From £52,400
CFP Construction Ltd is an established and experienced local extension builder in UB2. Please contact us for a free, no obligation quote and compet...

Mansard loft conversions range from the cheapest installation of £51,440 (Kairon Construction based in UB1) to the dearest of around £52,440 (Python Kitchen based in UB4).
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 UB2 by posting a job with HaMuch and we'll send it to extension builders in UB2.
"Mansard loft conversion" - HAYES, job posted 01/10/25
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 - £17,673

Two storey extension - £88,259

Build a timber frame extension - £26,173

Build a swimming pool - £81,173

Single storey extension - £58,456

Side return extension - £43,444

Install an RSJ - £2,373

Outbuilding - £10,173

Build a Mansard loft conversion - £52,173

Loft conversion - £35,370

Build a kitchen extension - £42,173

Hip to gable loft conversion - £42,173

Granny annexe - £87,173

Garden office - £10,173

Convert a Garage - £16,173

Garage - £18,673

Build a flat roof extension - £22,173

Build a dormer loft conversion - £42,173

Concrete foundations - £6,423

Convert a bungalow loft - £29,173

Convert a basement - £39,444