Adam Porter
Need to find an Extension Builder near you for all your extension buildering work?
A-Pex Building provides a local, trusted extension build...
From £86,824
Relax... you have found a reliable extension builder in CT16. Cosbuild and Maintenance ltd is a friendly and reliable company based in CT16 who con...

Building a granny annexe ranges from £86,368 (A-Pex Building based in CT17) to £86,824 (Cosbuild and Maintenance ltd based in CT17), 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 CT16 by posting a job with HaMuch. We will send it to extension builders in CT16 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Dover | £29 | £226 |
| Granny Annexe near Folkestone | £31 | £233 |
| Granny Annexe near Deal | £26 | £199 |
| Granny Annexe near Hythe | £31 | £228 |
| Granny Annexe near Canterbury | £31 | £232 |
| Granny Annexe near Margate | £27 | £208 |
| Granny Annexe near Ramsgate | £27 | £208 |
| Granny Annexe near Thanet | £27 | £208 |
| Granny Annexe near Broadstairs | £27 | £208 |
| Granny Annexe near Herne Bay | £28 | £213 |
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 - £17,096

Two storey extension - £87,394

Build a timber frame extension - £25,596

Build a swimming pool - £80,596

Single storey extension - £46,920

Side return extension - £36,955

Install an RSJ - £1,796

Outbuilding - £9,596

Build a Mansard loft conversion - £51,596

Loft conversion - £29,963

Build a kitchen extension - £41,596

Hip to gable loft conversion - £41,596

Granny annexe - £86,596

Garden office - £9,596

Convert a Garage - £15,596

Garage - £18,096

Build a flat roof extension - £21,596

Build a dormer loft conversion - £41,596

Concrete foundations - £5,846

Convert a bungalow loft - £28,596

Convert a basement - £32,955