From £18,892
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 £18,780
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 £18,692
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 £18,780
Trusted and professional extension builder in SL9. Experienced in all extension buildering work and keeping within budget and on quote. DC Build & ...
From £18,812
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £18,932
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 £18,652
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 £18,804
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 £18,924
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £18,420
NISUP BUILDING SERVICES Company specializes in the domestic and commercial building industry :1. Refurbishm...

Builders charge between £18,420 (Nisup Building Services based in HA8) and £18,932 (DP Services based in RG41) in SL9 to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in SL9 by posting a job with HaMuch and we will send it to extension builders in SL9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garage near Gerrards Cross | £43 | £282 |
| Garage near Rickmansworth | £42 | £278 |
| Garage near Hillingdon | £63 | £276 |
| Garage near Slough | £42 | £272 |
| Garage near Watford | £43 | £278 |
| Garage near Hazlemere | £40 | £272 |
| Garage near Chesham | £42 | £277 |
| Garage near Windsor & Maidenhead | £42 | £272 |
| Garage near Windsor | £41 | £271 |
| Garage 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