Build a mansard loft conversion in W9 from £51,904

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.

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From £52,096

Last active Nov 26
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Mr

Jonathan Rimmer

Experienced extension builder ready to quote for your work. Mr is the best extension builder in W9. No obligation free quotes and many happy custom...

From £51,904

Last active Nov 26
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V.S.P

V.S.P is a trusted extension builder serving customers in W9 and the surrounding area. Contact us to today to get a competitive quote for extension...

From £51,928

Last active Nov 26
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BPS Building

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

From £52,048

Last active Nov 26
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NWL Renovations Ltd

Patrick Gavin

Need an Extension Builder in W9? NWL Renovations Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many ...

From £52,360

Last active Oct 26
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M & A UK Ltd

Relax... you have found a reliable extension builder in W9. M & A UK Ltd is a friendly and reliable company based in W9 who consider no job as too ...

From £52,640

Last active Sep 26
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ELJHANI BUILDING & PROPERTY MANAGEMENT SERVICES LTD

Hussein Eljhani

We are highly professional Builders Company, hones pricing and reliable, we leave all areas clean and tidy.

From £53,904

Last active May 26
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Plum & Bros Loft Ltd

Plum & Bros Loft Ltd is an established extension buildering business in W9. We come highly recommended and provide competitive quotes for your work...

From £52,224

Last active Apr 26
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Graham Construction

Graham Construction is an established extension buildering business in W9. We come highly recommended and provide competitive quotes for your work....

From £52,376

Last active Feb 26
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EUROBUILD PROPERTIES CO LTD

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

EUROBUILD PROPERTIES CO LTD provides a local, trusted ex...

From £52,152

Last active Dec 25
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SDM Services

SDM Services is an established extension buildering business in W9. We come highly recommended and provide competitive quotes for your work.

Mansard loft conversion cost in W9

Estimates for build a mansard loft conversion near W9

Mansard loft conversions range from the cheapest installation of £51,904 (V.S.P based in NW10) to the dearest of around £53,904 (Plum & Bros Loft Ltd based in NW6).

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 W9 by posting a job with HaMuch and we'll send it to extension builders in W9. 


Estimates for common extension builder jobs in W9;

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...