From £86,784
Need to find an Extension Builder near you for all your extension buildering work?
DT ANDERSON CONSTRUCTION LTD provides a local, trusted e...
From £86,880
Need to find an Extension Builder near you for all your extension buildering work?
Leabra Construction North West Ltd provides a local, tru...
From £86,824
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,808
Relax... you have found a reliable extension builder in WA8. Webby is a friendly and reliable company based in WA8 who consider no job as too big o...
From £86,608
Relax... you have found a reliable extension builder in WA8. R A C Gas is a friendly and reliable company based in WA8 who consider no job as too b...
From £86,904
Relax... you have found a reliable extension builder in WA8. PENNY LANE BUILDERS LTD is a friendly and reliable company based in WA8 who consider n...
From £86,672
Fixit Cheshire is an established and experienced local extension builder in WA8. Please contact us for a free, no obligation quote and competitive ...
From £86,872
Experienced extension builder ready to quote for your work. Elevate Finishing is the best extension builder in WA8. No obligation free quotes and m...
From £86,992
J.T.Construction is a trusted extension builder serving customers in WA8 and the surrounding area. Contact us to today to get a competitive quote f...

Building a granny annexe ranges from £86,608 (R A C Gas based in WA7) to £87,064 (Bakers Building Maintenance based in WA8), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in WA8 by posting a job with HaMuch. We will send it to extension builders in WA8 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Widnes | £31 | £220 |
| Granny Annexe near Halton | £31 | £220 |
| Granny Annexe near Runcorn | £33 | £228 |
| Granny Annexe near Huyton with Roby | £31 | £225 |
| Granny Annexe near Prescot | £31 | £222 |
| Granny Annexe near Knowsley | £31 | £221 |
| Granny Annexe near St Helens | £31 | £224 |
| Granny Annexe near Warrington | £31 | £222 |
| Granny Annexe near Newton-le-Willows | £31 | £221 |
| Granny Annexe near Golborne | £30 | £222 |
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 - £17,341

Two storey extension - £87,761

Build a timber frame extension - £25,841

Build a swimming pool - £80,841

Single storey extension - £51,816

Side return extension - £39,709

Install an RSJ - £2,041

Outbuilding - £9,841

Build a Mansard loft conversion - £51,841

Loft conversion - £32,258

Build a kitchen extension - £41,841

Hip to gable loft conversion - £41,841

Granny annexe - £86,841

Garden office - £9,841

Convert a Garage - £15,841

Garage - £18,341

Build a flat roof extension - £21,841

Build a dormer loft conversion - £41,841

Concrete foundations - £6,091

Convert a bungalow loft - £28,841

Convert a basement - £35,709