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Experienced extension builder ready to quote for your work. ABS Abbott Preservation is the best extension builder in Street. No obligation free quo...
Trusted and professional extension builder in Street. Experienced in all extension buildering work and keeping within budget and on quote. MICHAEL ...
From £87,496
Experienced extension builder ready to quote for your work. Tim Stradling is the best extension builder in Street. No obligation free quotes and ma...

Building a granny annexe ranges from £86,528 (C O JOYCE LIMITED based in BA16) to £87,496 (Tim Stradling based in TA10), 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 Street by posting a job with HaMuch. We will send it to extension builders in Street who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near South Somerset | £62 | £270 |
| Granny Annexe near Bridgwater | £30 | £236 |
| Granny Annexe near Yeovil | £34 | £294 |
| Granny Annexe near Taunton | £31 | £242 |
| Granny Annexe near Bath | £32 | £249 |
| Granny Annexe near Weston-super-Mare | £33 | £253 |
| Granny Annexe near North Somerset | £32 | £245 |
| Granny Annexe near Frome | £33 | £263 |
| Granny Annexe near Clevedon | £32 | £243 |
| Granny Annexe near Keynsham | £33 | £251 |
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 - £17,540

Two storey extension - £88,060

Build a timber frame extension - £26,040

Build a swimming pool - £81,040

Single storey extension - £55,800

Side return extension - £41,950

Install an RSJ - £2,240

Outbuilding - £10,040

Build a Mansard loft conversion - £52,040

Loft conversion - £34,125

Build a kitchen extension - £42,040

Hip to gable loft conversion - £42,040

Granny annexe - £87,040

Garden office - £10,040

Convert a Garage - £16,040

Garage - £18,540

Build a flat roof extension - £22,040

Build a dormer loft conversion - £42,040

Concrete foundations - £6,290

Convert a bungalow loft - £29,040

Convert a basement - £37,950