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Select your affordable Castleton extension builder
Need to find an Extension Builder near you for all your extension buildering work?
Neil Massey Roofing Contractor provides a local, trusted...
Hraham Evans
Firestone Surfacing Ltd is a trusted extension builder serving customers in Castleton and the surrounding area. Contact us to today to get a compet...
From £52,400
Castleton, DT9
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £52,160
Need an Extension Builder in Castleton? Morris Concrete Designs has been helping local clients (20 mile radius) with their extension buildering job...

Mansard loft conversions range from the cheapest installation of £51,856 (Firestone Surfacing Ltd based in BA21) to the dearest of around £53,096 (Neil Massey Roofing Contractor based in BA21).
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 Castleton by posting a job with HaMuch and we'll send it to extension builders in Castleton.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Yeovil | £34 | £294 |
| Build A Mansard Loft Conversion near South Somerset | £62 | £270 |
| Build A Mansard Loft Conversion near Dorchester | £30 | £230 |
| Build A Mansard Loft Conversion near Weymouth | £33 | £260 |
| Build A Mansard Loft Conversion near Frome | £33 | £263 |
| Build A Mansard Loft Conversion near Bridgwater | £30 | £236 |
| Build A Mansard Loft Conversion near Taunton | £31 | £242 |
| Build A Mansard Loft Conversion near Bath | £32 | £249 |
| Build A Mansard Loft Conversion near Poole | £38 | £250 |
| Build A Mansard Loft Conversion near Trowbridge | £34 | £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 - £17,878

Two storey extension - £88,567

Build a timber frame extension - £26,378

Build a swimming pool - £81,378

Single storey extension - £62,560

Side return extension - £45,753

Install an RSJ - £2,578

Outbuilding - £10,378

Build a Mansard loft conversion - £52,378

Loft conversion - £37,294

Build a kitchen extension - £42,378

Hip to gable loft conversion - £42,378

Granny annexe - £87,378

Garden office - £10,378

Convert a Garage - £16,378

Garage - £18,878

Build a flat roof extension - £22,378

Build a dormer loft conversion - £42,378

Concrete foundations - £6,628

Convert a bungalow loft - £29,378

Convert a basement - £41,753