From £86,896
Derbyshire Bathrooms & Kitchens Ltd is an established and experienced local extension builder in DE1. Please contact us for a free, no obligation q...
From £87,112
Need to find an Extension Builder near you for all your extension buildering work?
J Pearson Building provides a local, trusted extension b...
From £86,904
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,752
Fitted Solutions was established in 2006 by founder Sam Fisher; with a promise to deliver exceptional craftmanship combined with first class custom...
From £86,744
The Blackbrook Group offers a one-stop shop for your construction project. We offer support from concept through to completion. We start with an in...
From £86,864
Nestled in the rolling hillside of the West Midlands, Derby is a city birthed by the Roman Empire, and grown in the industrial revolution. Initiall...

Building a granny annexe ranges from £86,744 (The Blackbrook Group based in DE22) to £87,112 (J Pearson Building based in DE24), 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 DE1 by posting a job with HaMuch. We will send it to extension builders in DE1 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Derby | £29 | £227 |
| Granny Annexe near Erewash | £31 | £234 |
| Granny Annexe near Amber Valley | £32 | £244 |
| Granny Annexe near Belper | £32 | £244 |
| Granny Annexe near Ilkeston | £31 | £236 |
| Granny Annexe near Long Eaton | £32 | £249 |
| Granny Annexe near Heanor | £31 | £236 |
| Granny Annexe near Ripley | £32 | £246 |
| Granny Annexe near Broxtowe | £34 | £240 |
| Granny Annexe near Burton upon Trent | £33 | £257 |
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 - £17,379

Two storey extension - £87,818

Build a timber frame extension - £25,879

Build a swimming pool - £80,879

Single storey extension - £52,573

Side return extension - £40,135

Install an RSJ - £2,079

Outbuilding - £9,879

Build a Mansard loft conversion - £51,879

Loft conversion - £32,613

Build a kitchen extension - £41,879

Hip to gable loft conversion - £41,879

Granny annexe - £86,879

Garden office - £9,879

Convert a Garage - £15,879

Garage - £18,379

Build a flat roof extension - £21,879

Build a dormer loft conversion - £41,879

Concrete foundations - £6,129

Convert a bungalow loft - £28,879

Convert a basement - £36,135