From £86,344
James Groarke
All works carried out to a very high standard, 30 years experience in all aspects of building works & general plumbing, honest reliable tradesm...
From £86,648
Colin Marsh
Trusted and professional extension builder in NR20. Experienced in all extension buildering work and keeping within budget and on quote. C MARSH BU...
From £86,128
Richard MacDonald
Our team are a well established and well trusted company with many years experiance all roofing and building work completed to th...

Building a granny annexe ranges from £86,128 (RM contractors based in Nr20) to £86,648 (C MARSH BUILDERS LIMITED based in NR20), 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 NR20 by posting a job with HaMuch. We will send it to extension builders in NR20 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Dereham | £25 | £203 |
| Granny Annexe near Broadland | £24 | £194 |
| Granny Annexe near Breckland | £28 | £248 |
| Granny Annexe near Norwich | £25 | £200 |
| Granny Annexe near Kings Lynn & West Norfolk | £31 | £238 |
| Granny Annexe near Thetford | £42 | £277 |
| Granny Annexe near King's Lynn | £33 | £254 |
| Granny Annexe near Great Yarmouth | £13 | £132 |
| Granny Annexe near Waveney | £24 | £200 |
| Granny Annexe near Ely | £40 | £279 |
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 - £16,873

Two storey extension - £87,060

Build a timber frame extension - £25,373

Build a swimming pool - £80,373

Single storey extension - £42,467

Side return extension - £34,450

Install an RSJ - £1,573

Outbuilding - £9,373

Build a Mansard loft conversion - £51,373

Loft conversion - £27,875

Build a kitchen extension - £41,373

Hip to gable loft conversion - £41,373

Granny annexe - £86,373

Garden office - £9,373

Convert a Garage - £15,373

Garage - £17,873

Build a flat roof extension - £21,373

Build a dormer loft conversion - £41,373

Concrete foundations - £5,623

Convert a bungalow loft - £28,373

Convert a basement - £30,450