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The Philog Paving Services is an established extension buildering business in Cardiff. We come highly recommended and provide competitive quotes fo...
Experienced extension builder ready to quote for your work. Chapman Builders is the best extension builder in Cardiff. No obligation free quotes an...
Experienced extension builder ready to quote for your work. JA Building Maintenance is the best extension builder in Cardiff. No obligation free qu...
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in Cardiff. No obligation free quotes and many ...
Relax... you have found a reliable extension builder in Cardiff. Charles Marshall Contracting Ltd is a friendly and reliable company based in Cardi...
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
MARWAY BUILDING LTD is a trusted extension builder serving customers in Cardiff and the surrounding area. Contact us to today to get a competitive ...
Cardiff, CF5
Trusted and professional extension builder in Cardiff. Experienced in all extension buildering work and keeping within budget and on quote. Elite B...
Paul Knox
Trusted and professional extension builder in Cardiff. Experienced in all extension buildering work and keeping within budget and on quote. PK CONS...
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 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.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Cardiff | £34 | £223 |
| Build A Mansard Loft Conversion near Penarth | £35 | £224 |
| Build A Mansard Loft Conversion near Caerphilly | £33 | £208 |
| Build A Mansard Loft Conversion near Barry | £33 | £223 |
| Build A Mansard Loft Conversion near Church Village | £34 | £214 |
| Build A Mansard Loft Conversion near Risca | £32 | £218 |
| Build A Mansard Loft Conversion near Newport | £41 | £233 |
| Build A Mansard Loft Conversion near Pontypridd | £33 | £211 |
| Build A Mansard Loft Conversion near Cwmbran | £43 | £219 |
| Build A Mansard Loft Conversion near Weston-super-Mare | £33 | £253 |
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 - £17,076

Two storey extension - £87,364

Build a timber frame extension - £25,576

Build a swimming pool - £80,576

Single storey extension - £46,520

Side return extension - £36,730

Install an RSJ - £1,776

Outbuilding - £9,576

Build a Mansard loft conversion - £51,576

Loft conversion - £29,775

Build a kitchen extension - £41,576

Hip to gable loft conversion - £41,576

Granny annexe - £86,576

Garden office - £9,576

Convert a Garage - £15,576

Garage - £18,076

Build a flat roof extension - £21,576

Build a dormer loft conversion - £41,576

Concrete foundations - £5,826

Convert a bungalow loft - £28,576

Convert a basement - £32,730