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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 £16,400
Castleton, DT9
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £16,160
Need an Extension Builder in Castleton? Morris Concrete Designs has been helping local clients (20 mile radius) with their extension buildering job...

Garage conversions in Castleton typically range from £15,856 (Firestone Surfacing Ltd based in BA21) to £17,096 (Neil Massey Roofing Contractor based in BA21), but the only way to get an accurate cost for your specific project is to get quotes.
Post a job with HaMuch and we'll send it to extension builders in Castleton who will be happy to help.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Garage near Yeovil | £34 | £294 |
| Convert A Garage near South Somerset | £62 | £270 |
| Convert A Garage near Dorchester | £30 | £230 |
| Convert A Garage near Weymouth | £33 | £260 |
| Convert A Garage near Frome | £33 | £263 |
| Convert A Garage near Bridgwater | £30 | £236 |
| Convert A Garage near Taunton | £31 | £242 |
| Convert A Garage near Bath | £32 | £249 |
| Convert A Garage near Poole | £38 | £250 |
| Convert A Garage 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