Need an Extension Builder in WA11? KMC Brickwork has been helping local clients (20 mile radius) with their extension buildering jobs for many year...
Mark Robinson
Trusted and professional extension builder in WA11. Experienced in all extension buildering work and keeping within budget and on quote. M L R Buil...
Higher End Construction Limited is an established extension buildering business in WA11. We come highly recommended and provide competitive quotes ...
G. Finnigan Builders is an established extension buildering business in WA11. We come highly recommended and provide competitive quotes for your wo...
Hello, I am Allan. I have run Allan Rowe Property Services since September 2014. I am based in Newton Le Willows and provide a wide range of proper...
From £86,224
MJ Barker & Son is an established extension buildering business in WA11. We come highly recommended and provide competitive quotes for your work.

Building a granny annexe ranges from £86,224 (MJ Barker & Son based in WA11) to £87,032 (Allan Rowe Property Services based in WA12), 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 WA11 by posting a job with HaMuch. We will send it to extension builders in WA11 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near St Helens | £31 | £224 |
| Granny Annexe near Ashton-in-Makerfield | £30 | £220 |
| Granny Annexe near Newton-le-Willows | £31 | £221 |
| Granny Annexe near Orrell | £29 | £214 |
| Granny Annexe near Prescot | £31 | £223 |
| Granny Annexe near Golborne | £30 | £222 |
| Granny Annexe near Knowsley | £31 | £222 |
| Granny Annexe near Skelmersdale | £28 | £210 |
| Granny Annexe near Wigan | £30 | £220 |
| Granny Annexe near Huyton with Roby | £31 | £225 |
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 - £17,200

Two storey extension - £87,550

Build a timber frame extension - £25,700

Build a swimming pool - £80,700

Single storey extension - £49,000

Side return extension - £38,125

Install an RSJ - £1,900

Outbuilding - £9,700

Build a Mansard loft conversion - £51,700

Loft conversion - £30,938

Build a kitchen extension - £41,700

Hip to gable loft conversion - £41,700

Granny annexe - £86,700

Garden office - £9,700

Convert a Garage - £15,700

Garage - £18,200

Build a flat roof extension - £21,700

Build a dormer loft conversion - £41,700

Concrete foundations - £5,950

Convert a bungalow loft - £28,700

Convert a basement - £34,125