From £9,752
Need an Extension Builder in L1? ARGYLE BUILDING AND MAINTENANCE has been helping local clients (20 mile radius) with their extension buildering jo...
From £9,968
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,016
Art Henry's are here to help customers who need an Extension Builder in L1. We offer a competitive rate to complete all your extension buildering j...
From £9,792
J J Nuttall Specialist Roofing Ltd are here to help customers who need an Extension Builder in L1. We offer a competitive rate to complete all your...
From £9,800
Experienced extension builder ready to quote for your work. Oxygen Property Partners is the best extension builder in L1. No obligation free quote...
From £9,672
J.M.C Building Services is a trusted extension builder serving customers in L1 and the surrounding area. Contact us to today to get a competitive q...
From £9,816
DK Building is an established extension buildering business in L1. We come highly recommended and provide competitive quotes for your work.
From £9,904
Glassrooms is an established extension buildering business in L1. We come highly recommended and provide competitive quotes for your work.
From £9,872
Relax... you have found a reliable extension builder in L1. Britannia Builders is a friendly and reliable company based in L1 who consider no job a...
From £9,736
Trusted and professional extension builder in L1. Experienced in all extension buildering work and keeping within budget and on quote. MA Roofing &...

Garden offices range from the cheapest of £9,672 (J.M.C Building Services based in L4) to the dearest of £10,016 (Art Henry's based in L8), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in L1 by posting a job with HaMuch. We'll send it to extension builders in L1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Liverpool | £31 | £222 |
| Garden Office near Birkenhead | £31 | £219 |
| Garden Office near Wallasey | £33 | £224 |
| Garden Office near Bootle | £32 | £223 |
| Garden Office near Bebington | £31 | £222 |
| Garden Office near Wirral | £31 | £219 |
| Garden Office near Crosby | £34 | £223 |
| Garden Office near Kirkby | £31 | £222 |
| Garden Office near Huyton with Roby | £31 | £225 |
| Garden Office near Knowsley | £31 | £221 |
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 - £17,333

Two storey extension - £87,749

Build a timber frame extension - £25,833

Build a swimming pool - £80,833

Single storey extension - £51,656

Side return extension - £39,619

Install an RSJ - £2,033

Outbuilding - £9,833

Build a Mansard loft conversion - £51,833

Loft conversion - £32,183

Build a kitchen extension - £41,833

Hip to gable loft conversion - £41,833

Granny annexe - £86,833

Garden office - £9,833

Convert a Garage - £15,833

Garage - £18,333

Build a flat roof extension - £21,833

Build a dormer loft conversion - £41,833

Concrete foundations - £6,083

Convert a bungalow loft - £28,833

Convert a basement - £35,619