Experienced extension builder ready to quote for your work. MATURECOURT BUILDERS LTD is the best extension builder in CO6. No obligation free quote...
From £86,976
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,088
R Best Building Services are here to help customers who need an Extension Builder in CO6. We offer a competitive rate to complete all your extensio...

Building a granny annexe ranges from £86,480 (JLP CAPENTRY & CONSTRUCTION based in CO3) to £87,088 (R Best Building Services based in CO3), 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 CO6 by posting a job with HaMuch. We will send it to extension builders in CO6 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Colchester | £34 | £232 |
| Granny Annexe near Sudbury | £34 | £229 |
| Granny Annexe near Witham | £36 | £240 |
| Granny Annexe near Braintree | £37 | £247 |
| Granny Annexe near Maldon | £36 | £244 |
| Granny Annexe near Tendring | £31 | £226 |
| Granny Annexe near Ipswich | £33 | £235 |
| Granny Annexe near Clacton-on-Sea | £31 | £230 |
| Granny Annexe near Haverhill | £37 | £260 |
| Granny Annexe near Chelmsford | £38 | £258 |
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 - £17,352

Two storey extension - £87,778

Build a timber frame extension - £25,852

Build a swimming pool - £80,852

Single storey extension - £52,040

Side return extension - £39,835

Install an RSJ - £2,052

Outbuilding - £9,852

Build a Mansard loft conversion - £51,852

Loft conversion - £32,363

Build a kitchen extension - £41,852

Hip to gable loft conversion - £41,852

Granny annexe - £86,852

Garden office - £9,852

Convert a Garage - £15,852

Garage - £18,352

Build a flat roof extension - £21,852

Build a dormer loft conversion - £41,852

Concrete foundations - £6,102

Convert a bungalow loft - £28,852

Convert a basement - £35,835