From £52,200
Relax... you have found a reliable extension builder in Alton. RP Superstructures is a friendly and reliable company based in Alton who consider no...
From £52,184
RP Superstructures was formed in 2011 by principals Gerry Budd and Pat Sheehan following the successful build of Gerry’s own house, using his mul...
From £52,440
VR Design Pubs & Co is a trusted extension builder serving customers in Alton and the surrounding area. Contact us to today to get a competitive qu...
From £52,080
Alton, GU34
Need an Extension Builder in Alton? A & J Roofing (Haslemere) Ltd has been helping local clients (20 mile radius) with their extension buildering j...
From £51,968
Need an Extension Builder in Alton? Green Ridge Developments has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £52,832
Experienced extension builder ready to quote for your work. CANADA BUILDERS & ROOFING LTD is the best extension builder in Alton. No obligation fre...
From £52,104
Need to find an Extension Builder near you for all your extension buildering work?
360 CONSTRUCTION SURREY LTD provides a local, trusted ex...
From £52,264
Experienced extension builder ready to quote for your work. Trad Roofing is the best extension builder in Alton. No obligation free quotes and many...
From £51,976
Relax... you have found a reliable extension builder in Alton. Design & Construction Support Ltd is a friendly and reliable company based in Alton ...

Mansard loft conversions range from the cheapest installation of £51,968 (Green Ridge Developments based in GU35) to the dearest of around £52,832 (CANADA BUILDERS & ROOFING LTD based in GU35).
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 Alton by posting a job with HaMuch and we'll send it to extension builders in Alton.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near East Hampshire | £38 | £258 |
| Build A Mansard Loft Conversion near Basingstoke | £39 | £274 |
| Build A Mansard Loft Conversion near Farnham | £41 | £276 |
| Build A Mansard Loft Conversion near Fleet | £41 | £270 |
| Build A Mansard Loft Conversion near Aldershot | £41 | £275 |
| Build A Mansard Loft Conversion near Waverley | £68 | £313 |
| Build A Mansard Loft Conversion near Basingstoke & Deane | £39 | £273 |
| Build A Mansard Loft Conversion near Ash Vale | £41 | £277 |
| Build A Mansard Loft Conversion near Farnborough | £41 | £273 |
| Build A Mansard Loft Conversion near Winchester | £37 | £266 |
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 - £17,712

Two storey extension - £88,318

Build a timber frame extension - £26,212

Build a swimming pool - £81,212

Single storey extension - £59,240

Side return extension - £43,885

Install an RSJ - £2,412

Outbuilding - £10,212

Build a Mansard loft conversion - £52,212

Loft conversion - £35,738

Build a kitchen extension - £42,212

Hip to gable loft conversion - £42,212

Granny annexe - £87,212

Garden office - £10,212

Convert a Garage - £16,212

Garage - £18,712

Build a flat roof extension - £22,212

Build a dormer loft conversion - £42,212

Concrete foundations - £6,462

Convert a bungalow loft - £29,212

Convert a basement - £39,885