BP Builders are here to help customers who need an Extension Builder in S4. We offer a competitive rate to complete all your extension buildering j...
Hallamshire Paving is an established and experienced local extension builder in S4. Please contact us for a free, no obligation quote and competiti...
Woodtec Joinery is an established extension buildering business in S4. We come highly recommended and provide competitive quotes for your work.
...Trusted and professional extension builder in S4. Experienced in all extension buildering work and keeping within budget and on quote. AMB Joinery ...
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 ...
Relax... you have found a reliable extension builder in S4. CS Construction & Conversions is a friendly and reliable company based in S4 who consid...
Trusted and professional extension builder in S4. Experienced in all extension buildering work and keeping within budget and on quote. Merebrook Co...
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...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

A flat roof extension ranges from the cheapest of £21,288 (JON WINDLE CONSTRUCTION based in S17) to the dearest of £22,344 (AMB Joinery & Building Services based in S8), 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 S4 by posting a job with HaMuch. We'll send it to extension builders in S4.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Sheffield | £32 | £261 |
| Build A Flat Roof Extension near Rotherham | £33 | £257 |
| Build A Flat Roof Extension near Dronfield | £33 | £262 |
| Build A Flat Roof Extension near Wickersley | £33 | £257 |
| Build A Flat Roof Extension near Barnsley | £31 | £242 |
| Build A Flat Roof Extension near Chesterfield | £33 | £257 |
| Build A Flat Roof Extension near Worksop | £33 | £265 |
| Build A Flat Roof Extension near Doncaster | £29 | £238 |
| Build A Flat Roof Extension near Holmfirth | £30 | £232 |
| Build A Flat Roof Extension near Mansfield Woodhouse | £33 | £262 |
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 - £17,492

Two storey extension - £87,988

Build a timber frame extension - £25,992

Build a swimming pool - £80,992

Single storey extension - £54,840

Side return extension - £41,410

Install an RSJ - £2,192

Outbuilding - £9,992

Build a Mansard loft conversion - £51,992

Loft conversion - £33,675

Build a kitchen extension - £41,992

Hip to gable loft conversion - £41,992

Granny annexe - £86,992

Garden office - £9,992

Convert a Garage - £15,992

Garage - £18,492

Build a flat roof extension - £21,992

Build a dormer loft conversion - £41,992

Concrete foundations - £6,242

Convert a bungalow loft - £28,992

Convert a basement - £37,410