From £88,588
Need an Extension Builder in SL9? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £88,420
Member since August 2026
Relax... you have found a reliable extension builder in SL9. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in SL9 who cons...
From £88,288
Need an Extension Builder in SL9? VA Structures has been helping local clients (10 mile radius) with their extension buildering jobs for many years...
From £88,420
Trusted and professional extension builder in SL9. Experienced in all extension buildering work and keeping within budget and on quote. DC Build & ...
From £88,468
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £88,648
DP Services is a fully insured friendly local company which has been trading since 2002 and delivers high quality building work in domestic extensi...
From £88,228
I am a qualified, builder, electrician and plumber. I have been working in the construction industry for over 23 years and have built everything fr...
From £88,456
Hi we have 15 years of experience in building and construction industry our specialization is bathrooms and renovations please have a look at the w...
From £88,636
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,880
NISUP BUILDING SERVICES Company specializes in the domestic and commercial building industry :1. Refurbishm...

Costs range from £87,880 (Nisup Building Services based in HA8) to £88,648 (DP Services based in RG41), 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 SL9.
"Two storey extension" - WD3, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Gerrards Cross | £43 | £282 |
| Two Storey Extension near Rickmansworth | £42 | £278 |
| Two Storey Extension near Hillingdon | £63 | £276 |
| Two Storey Extension near Slough | £42 | £272 |
| Two Storey Extension near Watford | £43 | £278 |
| Two Storey Extension near Hazlemere | £40 | £272 |
| Two Storey Extension near Chesham | £42 | £277 |
| Two Storey Extension near Windsor & Maidenhead | £42 | £272 |
| Two Storey Extension near Windsor | £41 | £271 |
| Two Storey Extension near Maidenhead | £41 | £273 |
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 - £17,769

Two storey extension - £88,403

Build a timber frame extension - £26,269

Build a swimming pool - £81,269

Single storey extension - £60,376

Side return extension - £44,524

Install an RSJ - £2,469

Outbuilding - £10,269

Build a Mansard loft conversion - £52,269

Loft conversion - £36,270

Build a kitchen extension - £42,269

Hip to gable loft conversion - £42,269

Granny annexe - £87,269

Garden office - £10,269

Convert a Garage - £16,269

Garage - £18,769

Build a flat roof extension - £22,269

Build a dormer loft conversion - £42,269

Concrete foundations - £6,519

Convert a bungalow loft - £29,269

Convert a basement - £40,524