From £37,140
Relax... you have found a reliable extension builder in S1. CS Construction & Conversions is a friendly and reliable company based in S1 who consid...
From £37,590
We are a family run business with 20 years experience.
We take great care and attention to the work we carry out and pride ourselves on ...
From £36,780
Trusted and professional extension builder in S1. Experienced in all extension buildering work and keeping within budget and on quote. Merebrook Co...
From £36,780
Dore Decor are a family run business with over 30 years experience - we offer an extensive range of building services and are able to provide a ful...
From £38,760
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £41,370
Trusted and professional extension builder in S1. Experienced in all extension buildering work and keeping within budget and on quote. AMB Joinery ...
From £38,490
Hallamshire Paving is an established and experienced local extension builder in S1. Please contact us for a free, no obligation quote and competiti...
From £37,320
BP Builders are here to help customers who need an Extension Builder in S1. We offer a competitive rate to complete all your extension buildering j...
From £35,970
Trusted and professional extension builder in S1. Experienced in all extension buildering work and keeping within budget and on quote. MGG CONSTRUC...

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 S1 by posting a job with HaMuch and we will send it to extension builders in S1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Sheffield | £32 | £261 |
| Convert A Basement near Dronfield | £33 | £262 |
| Convert A Basement near Rotherham | £33 | £257 |
| Convert A Basement near Wickersley | £33 | £257 |
| Convert A Basement near Chesterfield | £33 | £257 |
| Convert A Basement near Barnsley | £31 | £242 |
| Convert A Basement near Worksop | £33 | £265 |
| Convert A Basement near Doncaster | £29 | £238 |
| Convert A Basement near Mansfield Woodhouse | £33 | £263 |
| Convert A Basement near Holmfirth | £30 | £232 |
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 - £17,453

Two storey extension - £87,929

Build a timber frame extension - £25,953

Build a swimming pool - £80,953

Single storey extension - £54,056

Side return extension - £40,969

Install an RSJ - £2,153

Outbuilding - £9,953

Build a Mansard loft conversion - £51,953

Loft conversion - £33,308

Build a kitchen extension - £41,953

Hip to gable loft conversion - £41,953

Granny annexe - £86,953

Garden office - £9,953

Convert a Garage - £15,953

Garage - £18,453

Build a flat roof extension - £21,953

Build a dormer loft conversion - £41,953

Concrete foundations - £6,203

Convert a bungalow loft - £28,953

Convert a basement - £36,969