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Need an Extension Builder in Letchworth? R&J Building Services Ltd has been helping local clients (20 mile radius) with their extension buildering ...
Experienced extension builder ready to quote for your work. HB Construction is the best extension builder in Letchworth. No obligation free quotes ...
Trusted and professional extension builder in Letchworth. Experienced in all extension buildering work and keeping within budget and on quote. Amce...
Letchworth, SG6
Need an Extension Builder in Letchworth? WILLMOTT DIXON CONSTRUCTION LI has been helping local clients (20 mile radius) with their extension builde...
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
Gary Braine
Experienced extension builder ready to quote for your work. G B BUILDSTORE LTD is the best extension builder in Letchworth. No obligation free quot...
Letchworth, SG6
Need an Extension Builder in Letchworth? M SPINDLER CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension builderin...
TCL BUILDING SOLUTIONS LTD are here to help customers who need an Extension Builder in Letchworth. We offer a competitive rate to complete all your...
From £52,456
Steve Rolt Home Improvements Ltd was founded in 2016 in Buntingford, Hertfordshire, and from small beginnings, has gone from stren...
From £52,120
James Hogbourne
For more than 10 years, North Hertfordshire Construction LTD have been the name you can trust when it comes to building and development! We are kno...

Mansard loft conversions range from the cheapest installation of £51,848 (R&J Building Services Ltd based in SG17) to the dearest of around £52,488 (M SPINDLER CONSTRUCTION LTD based in SG6).
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 Letchworth by posting a job with HaMuch and we'll send it to extension builders in Letchworth.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Letchworth | £44 | £283 |
| Build A Mansard Loft Conversion near North Hertfordshire | £44 | £283 |
| Build A Mansard Loft Conversion near Hitchin | £43 | £283 |
| Build A Mansard Loft Conversion near Stevenage | £44 | £282 |
| Build A Mansard Loft Conversion near Biggleswade | £41 | £268 |
| Build A Mansard Loft Conversion near East Hertfordshire | £44 | £289 |
| Build A Mansard Loft Conversion near Mid Bedfordshire | £42 | £276 |
| Build A Mansard Loft Conversion near Luton | £42 | £279 |
| Build A Mansard Loft Conversion near Ampthill | £38 | £258 |
| Build A Mansard Loft Conversion near Harpenden | £45 | £282 |
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 - £17,705

Two storey extension - £88,307

Build a timber frame extension - £26,205

Build a swimming pool - £81,205

Single storey extension - £59,096

Side return extension - £43,804

Install an RSJ - £2,405

Outbuilding - £10,205

Build a Mansard loft conversion - £52,205

Loft conversion - £35,670

Build a kitchen extension - £42,205

Hip to gable loft conversion - £42,205

Granny annexe - £87,205

Garden office - £10,205

Convert a Garage - £16,205

Garage - £18,705

Build a flat roof extension - £22,205

Build a dormer loft conversion - £42,205

Concrete foundations - £6,455

Convert a bungalow loft - £29,205

Convert a basement - £39,804