SMH Build & Renovate is an established extension buildering business in Farnworth. We come highly recommended and provide competitive quotes for yo...
Amak Construction is an established and experienced local extension builder in Farnworth. Please contact us for a free, no obligation quote and com...
Need an Extension Builder in Farnworth? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many y...
Experienced extension builder ready to quote for your work. Advanced Builders & Roofers is the best extension builder in Farnworth. No obligation f...
Homeowners look no further if you want a qualified extension builder to work in your home. T K O Kitchens & Construction are tidy and neat, providi...
Relax... you have found a reliable extension builder in Farnworth. David Anderson Builders is a friendly and reliable company based in Farnworth wh...
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
Jonathan
Need to find an Extension Builder near you for all your extension buildering work?
ESBP Specialists Ltd provides a local, trusted extension...
Need to find an Extension Builder near you for all your extension buildering work?
J & C Barker (Builders) Limited provides a local, truste...
Wallplas is an established extension buildering business in Farnworth. We come highly recommended and provide competitive quotes for your work.
...
Building a granny annexe ranges from £86,584 (Amak Construction based in BL8) to £86,960 (ESBP Specialists Ltd based in M26), 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 Farnworth by posting a job with HaMuch. We will send it to extension builders in Farnworth who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Farnworth | £30 | £219 |
| Granny Annexe near Little Hulton | £31 | £220 |
| Granny Annexe near Bolton | £31 | £219 |
| Granny Annexe near Radcliffe | £30 | £220 |
| Granny Annexe near Swinton | £32 | £234 |
| Granny Annexe near Atherton | £31 | £223 |
| Granny Annexe near Whitefield | £31 | £229 |
| Granny Annexe near Westhoughton | £31 | £222 |
| Granny Annexe near Eccles | £32 | £236 |
| Granny Annexe near Prestwich | £31 | £233 |
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 - £17,297

Two storey extension - £87,695

Build a timber frame extension - £25,797

Build a swimming pool - £80,797

Single storey extension - £50,936

Side return extension - £39,214

Install an RSJ - £1,997

Outbuilding - £9,797

Build a Mansard loft conversion - £51,797

Loft conversion - £31,845

Build a kitchen extension - £41,797

Hip to gable loft conversion - £41,797

Granny annexe - £86,797

Garden office - £9,797

Convert a Garage - £15,797

Garage - £18,297

Build a flat roof extension - £21,797

Build a dormer loft conversion - £41,797

Concrete foundations - £6,047

Convert a bungalow loft - £28,797

Convert a basement - £35,214