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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...
SMH Build & Renovate is an established extension buildering business in Bolton. We come highly recommended and provide competitive quotes for your ...
Amak Construction is an established and experienced local extension builder in Bolton. Please contact us for a free, no obligation quote and compet...
Experienced extension builder ready to quote for your work. Advanced Builders & Roofers is the best extension builder in Bolton. No obligation free...
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
Relax... you have found a reliable extension builder in Bolton. David Anderson Builders is a friendly and reliable company based in Bolton who cons...
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 Bolton. We come highly recommended and provide competitive quotes for your work.
WWS Garage Doors & Shutters is a trusted extension builder serving customers in Bolton and the surrounding area. Contact us to today to get a compe...

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 Bolton by posting a job with HaMuch. We will send it to extension builders in Bolton who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Bolton | £31 | £219 |
| Granny Annexe near Farnworth | £30 | £219 |
| Granny Annexe near Little Hulton | £31 | £220 |
| Granny Annexe near Radcliffe | £30 | £220 |
| Granny Annexe near Westhoughton | £31 | £222 |
| Granny Annexe near Atherton | £31 | £223 |
| Granny Annexe near Horwich | £30 | £219 |
| Granny Annexe near Bury | £30 | £219 |
| Granny Annexe near Swinton | £32 | £234 |
| Granny Annexe near Whitefield | £31 | £229 |
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 - £17,305

Two storey extension - £87,707

Build a timber frame extension - £25,805

Build a swimming pool - £80,805

Single storey extension - £51,096

Side return extension - £39,304

Install an RSJ - £2,005

Outbuilding - £9,805

Build a Mansard loft conversion - £51,805

Loft conversion - £31,920

Build a kitchen extension - £41,805

Hip to gable loft conversion - £41,805

Granny annexe - £86,805

Garden office - £9,805

Convert a Garage - £15,805

Garage - £18,305

Build a flat roof extension - £21,805

Build a dormer loft conversion - £41,805

Concrete foundations - £6,055

Convert a bungalow loft - £28,805

Convert a basement - £35,304