From £41,010
Trusted and professional extension builder in Horsham. Experienced in all extension buildering work and keeping within budget and on quote. CadLine...
From £36,960
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £42,180
Established in 2005, GreenBuild provides a sustainable high-end construction service throughout Sussex, Surrey and the surrounding areas. Our exper...
From £33,270
HORSHAM, RH13
Hi I'm an independent patio and drive way specialist with over 10 years experence. My reasonable prices and my professional work is every reason to...
From £39,030
G & R Homes is an established and experienced local extension builder in Horsham. Please contact us for a free, no obligation quote and competitive...
From £36,780
Horsham, RH12
Trusted and professional extension builder in Horsham. Experienced in all extension buildering work and keeping within budget and on quote. M + H B...
From £38,130
Capital lofts are a design and build construction company based in Horsham, we provide high quality workmanship from architectural drawings to a f...
From £37,320
Horsham, RH12
Trusted and professional extension builder in Horsham. Experienced in all extension buildering work and keeping within budget and on quote. Design-...
From £39,030
Horsham, RH12
AWS Home Improvements is an established extension buildering business in Horsham. We come highly recommended and provide competitive quotes for you...
From £40,470
Need an Extension Builder in Horsham? Michael & Co has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...

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 Horsham by posting a job with HaMuch and we will send it to extension builders in Horsham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Horsham | £38 | £265 |
| Convert A Basement near Crawley | £38 | £255 |
| Convert A Basement near Mid Sussex | £35 | £261 |
| Convert A Basement near Horley | £38 | £258 |
| Convert A Basement near Haywards Heath | £35 | £256 |
| Convert A Basement near Burgess Hill | £36 | £240 |
| Convert A Basement near Reigate | £40 | £270 |
| Convert A Basement near Redhill | £41 | £269 |
| Convert A Basement near East Grinstead | £37 | £259 |
| Convert A Basement near Great Bookham | £42 | £281 |
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 - £17,582

Two storey extension - £88,122

Build a timber frame extension - £26,082

Build a swimming pool - £81,082

Single storey extension - £56,632

Side return extension - £42,418

Install an RSJ - £2,282

Outbuilding - £10,082

Build a Mansard loft conversion - £52,082

Loft conversion - £34,515

Build a kitchen extension - £42,082

Hip to gable loft conversion - £42,082

Granny annexe - £87,082

Garden office - £10,082

Convert a Garage - £16,082

Garage - £18,582

Build a flat roof extension - £22,082

Build a dormer loft conversion - £42,082

Concrete foundations - £6,332

Convert a bungalow loft - £29,082

Convert a basement - £38,418