From £87,904
Extensions, Refurbishments & Loft ConversionsAt Keystone our mission is to help our clients imagine, design & build environments that enhance their...
From £87,712
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £88,168
Experienced extension builder ready to quote for your work. MRA CONSTRUCTION is the best extension builder in RH16. No obligation free quotes and m...
From £88,012
Need to find an Extension Builder near you for all your extension buildering work?
Tj's Fencing provides a local, trusted extension builder...
From £88,900
Rjscarpentryconstruction is a well established company with over 30 years of experience in the carpentry and construction industries
From £87,772
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £88,540
TOLLEY CARPENTRY is an established extension buildering business in RH16. We come highly recommended and provide competitive quotes for your work.<...
From £88,096
JG Brickwork Services Limited is an established extension buildering business in RH16. We come highly recommended and provide competitive quotes fo...
From £87,604
Relax... you have found a reliable extension builder in RH16. Atlas Installations is a friendly and reliable company based in RH16 who consider no ...
From £87,676
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...

Costs range from £87,604 (Atlas Installations based in RH15) to £88,900 (RJ's Carpentry Construction based in RH15), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to RH16.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Haywards Heath | £35 | £256 |
| Two Storey Extension near Mid Sussex | £35 | £261 |
| Two Storey Extension near Burgess Hill | £36 | £240 |
| Two Storey Extension near Crawley | £38 | £255 |
| Two Storey Extension near East Grinstead | £37 | £259 |
| Two Storey Extension near Horsham | £38 | £265 |
| Two Storey Extension near Brighton and Hove | £35 | £251 |
| Two Storey Extension near Horley | £38 | £258 |
| Two Storey Extension near Crowborough | £36 | £258 |
| Two Storey Extension near Brighton | £35 | £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 - £17,526

Two storey extension - £88,038

Build a timber frame extension - £26,026

Build a swimming pool - £81,026

Single storey extension - £55,512

Side return extension - £41,788

Install an RSJ - £2,226

Outbuilding - £10,026

Build a Mansard loft conversion - £52,026

Loft conversion - £33,990

Build a kitchen extension - £42,026

Hip to gable loft conversion - £42,026

Granny annexe - £87,026

Garden office - £10,026

Convert a Garage - £16,026

Garage - £18,526

Build a flat roof extension - £22,026

Build a dormer loft conversion - £42,026

Concrete foundations - £6,276

Convert a bungalow loft - £29,026

Convert a basement - £37,788