From £38,670
Need an Extension Builder in BS39? RHayes Roofing has been helping local clients (20 mile radius) with their extension buildering jobs for many yea...
From £35,430
Experienced extension builder ready to quote for your work. J CROZIER (BUILDERS) LTD is the best extension builder in BS39. No obligation free quot...
From £47,940
Mark Richards
We are a family run small business, we only use fully time served tradespeople. Having been building for 22years a still having a passion for quali...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in BS39 by posting a job with HaMuch and we will send it to extension builders in BS39.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Bath | £32 | £249 |
| Convert A Basement near Keynsham | £33 | £251 |
| Convert A Basement near Bristol | £33 | £255 |
| Convert A Basement near Kingswood | £34 | £257 |
| Convert A Basement near Clifton | £33 | £255 |
| Convert A Basement near Frome | £33 | £263 |
| Convert A Basement near North Somerset | £32 | £245 |
| Convert A Basement near South Gloucestershire | £34 | £260 |
| Convert A Basement near Portishead | £33 | £247 |
| Convert A Basement 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 - £17,783

Two storey extension - £88,424

Build a timber frame extension - £26,283

Build a swimming pool - £81,283

Single storey extension - £60,653

Side return extension - £44,680

Install an RSJ - £2,483

Outbuilding - £10,283

Build a Mansard loft conversion - £52,283

Loft conversion - £36,400

Build a kitchen extension - £42,283

Hip to gable loft conversion - £42,283

Granny annexe - £87,283

Garden office - £10,283

Convert a Garage - £16,283

Garage - £18,783

Build a flat roof extension - £22,283

Build a dormer loft conversion - £42,283

Concrete foundations - £6,533

Convert a bungalow loft - £29,283

Convert a basement - £40,680