BEANACRE BUILDERS LTD are here to help customers who need an Extension Builder in SN12. We offer a competitive rate to complete all your extension ...
From £22,072
Relax... you have found a reliable extension builder in SN12. TJ PROFESSIONAL BUILDERS T/A is a friendly and reliable company based in SN12 who con...
From £21,896
Our building services company TG Roofing and Construction was established over 10 years ago and have been helping customers throughout Wiltshire by...

A flat roof extension ranges from the cheapest of £21,896 (TG Roofing and Construction based in SN12) to the dearest of £22,184 (BEANACRE BUILDERS LTD based in SN12), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in SN12 by posting a job with HaMuch. We'll send it to extension builders in SN12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Trowbridge | £34 | £266 |
| Build A Flat Roof Extension near West Wiltshire | £32 | £242 |
| Build A Flat Roof Extension near North Wiltshire | £32 | £242 |
| Build A Flat Roof Extension near Devizes | £32 | £242 |
| Build A Flat Roof Extension near Calne | £29 | £225 |
| Build A Flat Roof Extension near Chippenham | £34 | £258 |
| Build A Flat Roof Extension near Frome | £33 | £263 |
| Build A Flat Roof Extension near Bath | £32 | £249 |
| Build A Flat Roof Extension near Keynsham | £33 | £251 |
| Build A Flat Roof Extension near Yate | £34 | £263 |
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 - £17,551

Two storey extension - £88,076

Build a timber frame extension - £26,051

Build a swimming pool - £81,051

Single storey extension - £56,013

Side return extension - £42,070

Install an RSJ - £2,251

Outbuilding - £10,051

Build a Mansard loft conversion - £52,051

Loft conversion - £34,225

Build a kitchen extension - £42,051

Hip to gable loft conversion - £42,051

Granny annexe - £87,051

Garden office - £10,051

Convert a Garage - £16,051

Garage - £18,551

Build a flat roof extension - £22,051

Build a dormer loft conversion - £42,051

Concrete foundations - £6,301

Convert a bungalow loft - £29,051

Convert a basement - £38,070