Build a mansard loft conversion in Cardiff from £51,040

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 £51,728

Last active Oct 26
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The Philog Paving Services

The Philog Paving Services is an established extension buildering business in Cardiff. We come highly recommended and provide competitive quotes fo...

From £51,808

Last active Oct 26
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Chapman Builders

Experienced extension builder ready to quote for your work. Chapman Builders is the best extension builder in Cardiff. No obligation free quotes an...

From £51,616

Last active Sep 26
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JA Building Maintenance

Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in Cardiff. No obligation free qu...

From £51,784

Last active Sep 26
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TOR BUILD

Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in Cardiff. No obligation free quotes and many ...

From £51,632

Last active Sep 26
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Charles Marshall Contracting Ltd

Relax... you have found a reliable extension builder in Cardiff. Charles Marshall Contracting Ltd is a friendly and reliable company based in Cardi...

From £51,200

Last active Aug 26
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Penarth Loft Conversions Ltd

Bill Coslett

35 years in the trade and there is not much we haven't come across or done from pools to extensions and we specialise in loft conversions

From £51,600

Last active Jul 26
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MARWAY BUILDING LTD

MARWAY BUILDING LTD is a trusted extension builder serving customers in Cardiff and the surrounding area. Contact us to today to get a competitive ...

From £51,560

Last active Jul 26
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Elite Building Contractors South Wales

Location

Cardiff, CF5

Trusted and professional extension builder in Cardiff. Experienced in all extension buildering work and keeping within budget and on quote. Elite B...

From £51,040

Last active Jul 26
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PK CONSTRUCTION

Paul Knox

Trusted and professional extension builder in Cardiff. Experienced in all extension buildering work and keeping within budget and on quote. PK CONS...

From £51,792

Last active Jul 26
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MCp Home Improvements

MCp Home Improvements is an established and experienced local extension builder in Cardiff. Please contact us for a free, no obligation quote and c...

Mansard loft conversion cost in Cardiff

Estimates for build a mansard loft conversion near Cardiff

Mansard loft conversions range from the cheapest installation of £51,040 (PK CONSTRUCTION based in CF14) to the dearest of around £51,808 (Chapman Builders based in CF5).

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


Estimates for common extension builder jobs in Cardiff;

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...