From £52,048
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in E11. No obligation free quotes ...
From £52,360
Relax... you have found a reliable extension builder in E11. M & A UK Ltd is a friendly and reliable company based in E11 who consider no job as to...
From £52,320
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in E11. No obligation free qu...
From £52,376
CK Constructions & Development Ltd is a trusted extension builder serving customers in E11 and the surrounding area. Contact us to today to get a c...
From £52,448
London Construction is an established and experienced local extension builder in E11. Please contact us for a free, no obligation quote and competi...
From £51,976
A to Z Builders Ltd are here to help customers who need an Extension Builder in E11. We offer a competitive rate to complete all your extension bui...
From £52,248
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in E11. No obligation free quot...
From £52,424
Nouvell Decor is a trusted extension builder serving customers in E11 and the surrounding area. Contact us to today to get a competitive quote for ...
From £53,616
Over 20 years experience
Client focussed and driven
Personal planning and completion of work
Warranty ...
From £52,112
Trusted and professional extension builder in E11. Experienced in all extension buildering work and keeping within budget and on quote. D Dan Const...

Mansard loft conversions range from the cheapest installation of £51,976 (A to Z Builders Ltd based in SW1P) to the dearest of around £53,616 (GasHeat based in NW10).
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 E11 by posting a job with HaMuch and we'll send it to extension builders in E11.
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 - £17,893

Two storey extension - £88,589

Build a timber frame extension - £26,393

Build a swimming pool - £81,393

Single storey extension - £62,856

Side return extension - £45,919

Install an RSJ - £2,593

Outbuilding - £10,393

Build a Mansard loft conversion - £52,393

Loft conversion - £37,433

Build a kitchen extension - £42,393

Hip to gable loft conversion - £42,393

Granny annexe - £87,393

Garden office - £10,393

Convert a Garage - £16,393

Garage - £18,893

Build a flat roof extension - £22,393

Build a dormer loft conversion - £42,393

Concrete foundations - £6,643

Convert a bungalow loft - £29,393

Convert a basement - £41,919