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Select an affordable extension builder
From £38,220
Croft-Hill Building & Joinery is a trusted extension builder serving customers in DL15 and the surrounding area. Contact us to today to get a compe...
From £37,140
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £37,950
Need to find an Extension Builder near you for all your extension buildering work?
SBC (BUILDERS) LIMITED provides a local, trusted extensi...

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 DL15 by posting a job with HaMuch and we will send it to extension builders in DL15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Bishop Auckland | £38 | £248 |
| Convert A Basement near Spennymoor | £37 | £249 |
| Convert A Basement near Durham | £47 | £267 |
| Convert A Basement near Newton Aycliffe | £38 | £225 |
| Convert A Basement near Consett | £33 | £241 |
| Convert A Basement near Stanley | £34 | £242 |
| Convert A Basement near Chester-le-Street | £35 | £242 |
| Convert A Basement near Darlington | £60 | £222 |
| Convert A Basement near Washington | £33 | £254 |
| Convert A Basement near Sunderland | £33 | £251 |
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 - £17,524

Two storey extension - £88,036

Build a timber frame extension - £26,024

Build a swimming pool - £81,024

Single storey extension - £55,480

Side return extension - £41,770

Install an RSJ - £2,224

Outbuilding - £10,024

Build a Mansard loft conversion - £52,024

Loft conversion - £33,975

Build a kitchen extension - £42,024

Hip to gable loft conversion - £42,024

Granny annexe - £87,024

Garden office - £10,024

Convert a Garage - £16,024

Garage - £18,524

Build a flat roof extension - £22,024

Build a dormer loft conversion - £42,024

Concrete foundations - £6,274

Convert a bungalow loft - £29,024

Convert a basement - £37,770