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Select your affordable S18 extension builder
Trusted and professional extension builder in S18. Experienced in all extension buildering work and keeping within budget and on quote. AMB Joinery...
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 £42,368
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £41,968
Trusted and professional extension builder in S18. Experienced in all extension buildering work and keeping within budget and on quote. R S Heating...
From £42,392
Peak Roofclean offer an inexpensive way of permanently keeping your roof free of moss, lichens and algae. Not only is it 100% effective but...
From £42,072
Need an Extension Builder in S18? Cortworth Millhouse Design & Build has been helping local clients (20 mile radius) with their extension builderin...
From £42,336
Blenheim Park Developments is an established and experienced local extension builder in S18. Please contact us for a free, no obligation quote and ...

In S18, prices for dormer loft conversions range from £41,288 (JON WINDLE CONSTRUCTION based in S17) to £42,392 (Peak Roof Clean based in S42), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for.
The best way to get an accurate price is to compare quotes from extension builders in S18. Post your job on HaMuch now and we'll put you in touch with available extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Dormer Loft Conversion near Dronfield | £33 | £262 |
| Build A Dormer Loft Conversion near Chesterfield | £33 | £257 |
| Build A Dormer Loft Conversion near Sheffield | £32 | £261 |
| Build A Dormer Loft Conversion near Rotherham | £32 | £257 |
| Build A Dormer Loft Conversion near Wickersley | £32 | £258 |
| Build A Dormer Loft Conversion near Worksop | £33 | £265 |
| Build A Dormer Loft Conversion near Alfreton | £34 | £261 |
| Build A Dormer Loft Conversion near Sutton-in-Ashfield | £33 | £264 |
| Build A Dormer Loft Conversion near Mansfield Woodhouse | £33 | £262 |
| Build A Dormer Loft Conversion near Kirkby-in-Ashfield | £34 | £269 |
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 - £17,588

Two storey extension - £88,132

Build a timber frame extension - £26,088

Build a swimming pool - £81,088

Single storey extension - £56,760

Side return extension - £42,490

Install an RSJ - £2,288

Outbuilding - £10,088

Build a Mansard loft conversion - £52,088

Loft conversion - £34,575

Build a kitchen extension - £42,088

Hip to gable loft conversion - £42,088

Granny annexe - £87,088

Garden office - £10,088

Convert a Garage - £16,088

Garage - £18,588

Build a flat roof extension - £22,088

Build a dormer loft conversion - £42,088

Concrete foundations - £6,338

Convert a bungalow loft - £29,088

Convert a basement - £38,490