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Building a granny annexe ranges from £86,640 (Sharprint Limited based in NR34) to £86,640 (Sharprint Limited based in NR34), 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 Southwold by posting a job with HaMuch. We will send it to extension builders in Southwold who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Waveney | £24 | £200 |
| Granny Annexe near Lowestoft | £24 | £197 |
| Granny Annexe near Gorleston-on-Sea | £25 | £205 |
| Granny Annexe near Suffolk Coastal | £28 | £215 |
| Granny Annexe near Great Yarmouth | £13 | £132 |
| Granny Annexe near Norwich | £25 | £200 |
| Granny Annexe near Stowmarket | £30 | £221 |
| Granny Annexe near Felixstowe | £31 | £231 |
| Granny Annexe near Ipswich | £33 | £235 |
| Granny Annexe near Harwich | £34 | £248 |
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 - £17,140

Two storey extension - £87,460

Build a timber frame extension - £25,640

Build a swimming pool - £80,640

Single storey extension - £47,800

Side return extension - £37,450

Install an RSJ - £1,840

Outbuilding - £9,640

Build a Mansard loft conversion - £51,640

Loft conversion - £30,375

Build a kitchen extension - £41,640

Hip to gable loft conversion - £41,640

Granny annexe - £86,640

Garden office - £9,640

Convert a Garage - £15,640

Garage - £18,140

Build a flat roof extension - £21,640

Build a dormer loft conversion - £41,640

Concrete foundations - £5,890

Convert a bungalow loft - £28,640

Convert a basement - £33,450