Build a mansard loft conversion in Stoneleigh from £52,048

Mansard loft conversions are ideal if you want to maximise the space in your home. Extending your roof out into a flat roof with an almost vertical wall, they almost always require planning permission but can add significant value to your home. To see prices and availability for your job click green button.

HaMuch is Excellent

How HaMuch saves you money

Post your job for free

Post your job for free

We send your job to ALL Stoneleigh extension builders

Compare quotes

Compare quotes

Available extension builders in Stoneleigh reply

Save Money

Save Money

Select your affordable Stoneleigh extension builder

Post your job

From £52,800

Rates updated Oct 26
Get quotes

GDW Construction

Relax... you have found a reliable extension builder in Stoneleigh. GDW Construction is a friendly and reliable company based in Stoneleigh who con...

From £52,800

Rates updated Oct 26
Get quotes

OAK HOUSE BESPOKE BUILDERS

Need to find an Extension Builder near you for all your extension buildering work?

OAK HOUSE BESPOKE BUILDERS provides a local, trusted ext...

From £52,176

Rates verified Oct 26
Get quotes

Self employed

Hamza Elezi

Hight quality of jobs

From £52,048

Rates verified Sep 26
Get quotes

J&J Building Solutions

Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Stoneleigh. No obligation free ...

From £52,192

Last active Nov 26
Get quotes

Gb construction

Gani Bush

Gb construction are here to help customers who need an Extension Builder in Stoneleigh. We offer a competitive rate to complete all your extension...

From £52,200

Last active Nov 26
Get quotes

CW BUILDING SERVICES

Experienced extension builder ready to quote for your work. CW BUILDING SERVICES is the best extension builder in Stoneleigh. No obligation free qu...

From £53,200

Get quotes

Banga Decoration

Sebastian Banga

Member since August 2025

Banga decoration. Is Base in south London  for number of year  Banga decoration is a small  company. Wich provide an excellent job to the custom...

From £52,160

Last active Nov 26
Get quotes

AVIB City Construction Ltd

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

From £52,416

Last active Oct 26
Get quotes

TFC Construction

Trusted and professional extension builder in Stoneleigh. Experienced in all extension buildering work and keeping within budget and on quote. TFC ...

From £52,080

Last active Oct 26
Get quotes

D & R Roofing & Loft Conversions, Building & Design

Relax... you have found a reliable extension builder in Stoneleigh. D & R Roofing & Loft Conversions, Building & Design is a friendly and reliable ...

Mansard loft conversion cost in Stoneleigh

Estimates for build a mansard loft conversion near Stoneleigh

Mansard loft conversions range from the cheapest installation of £52,048 (J&J Building Solutions based in SW16) to the dearest of around £53,200 (Banga Decoration based in CR7).

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 Stoneleigh by posting a job with HaMuch and we'll send it to extension builders in Stoneleigh. 


Estimates for common extension builder jobs in Stoneleigh;

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.

More extensions & conversions cost guides...