Build a mansard loft conversion in SO40 from £51,856

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 £51,856

Last active Jun 26
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Trowel On

Trowel On is an established extension buildering business in SO40. We come highly recommended and provide competitive quotes for your work.

From £51,928

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GDS Building & Maintenance Ltd

GDS Building & Maintenance Ltd is an established and experienced local extension builder in SO40. Please contact us for a free, no obligation quote...

From £51,928

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1st Oak Building Preservation & Maintenance

Relax... you have found a reliable extension builder in SO40. 1st Oak Building Preservation & Maintenance is a friendly and reliable company based ...

From £52,112

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Safespec Building Services Limited

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

From £51,904

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KT Carpentry & Building Services

Our building services company KT Carpentry & Building Services has been helping customers in Southampton, Winchester, Brockenhurst and Portsmouth b...

Mansard loft conversion cost in SO40

Estimates for build a mansard loft conversion near SO40

Mansard loft conversions range from the cheapest installation of £51,856 (Trowel On based in SO40) to the dearest of around £52,112 (Safespec Building Services Limited based in SO40).

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 SO40 by posting a job with HaMuch and we'll send it to extension builders in SO40. 


Estimates for common extension builder jobs in SO40;

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.

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