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Relax... you have found a reliable extension builder in Stowmarket. Mixbrow Construction is a friendly and reliable company based in Stowmarket who...
From £86,776
Trusted and professional extension builder in Stowmarket. Experienced in all extension buildering work and keeping within budget and on quote. RD F...
From £86,856
Offering a friendly and professional construction and insulation services to private residential and commercial customers in East Anglia and surrou...
From £86,824
Professional, reliable and competitive with great workmanship.

Building a granny annexe ranges from £86,624 (Mixbrow Construction based in IP6) to £86,856 (D S Mead Limited based in IP14), 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 Stowmarket by posting a job with HaMuch. We will send it to extension builders in Stowmarket who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Stowmarket | £30 | £221 |
| Granny Annexe near Ipswich | £33 | £235 |
| Granny Annexe near Bury St Edmunds | £34 | £251 |
| Granny Annexe near Suffolk Coastal | £28 | £215 |
| Granny Annexe near Sudbury | £34 | £229 |
| Granny Annexe near Thetford | £42 | £277 |
| Granny Annexe near Felixstowe | £31 | £231 |
| Granny Annexe near Harwich | £34 | £248 |
| Granny Annexe near Tendring | £31 | £226 |
| Granny Annexe near Colchester | £34 | £232 |
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 - £17,270

Two storey extension - £87,655

Build a timber frame extension - £25,770

Build a swimming pool - £80,770

Single storey extension - £50,400

Side return extension - £38,913

Install an RSJ - £1,970

Outbuilding - £9,770

Build a Mansard loft conversion - £51,770

Loft conversion - £31,594

Build a kitchen extension - £41,770

Hip to gable loft conversion - £41,770

Granny annexe - £86,770

Garden office - £9,770

Convert a Garage - £15,770

Garage - £18,270

Build a flat roof extension - £21,770

Build a dormer loft conversion - £41,770

Concrete foundations - £6,020

Convert a bungalow loft - £28,770

Convert a basement - £34,913