From £87,144
Need to find an Extension Builder near you for all your extension buildering work?
TPJ Building Ltd provides a local, trusted extension bui...
From £87,224
LTM Construction is an established and experienced local extension builder in East Hertfordshire. Please contact us for a free, no obligation quote...
From £87,328
Reid James is a family run Building and Construction company based in Ware, Hertfordshire who cover all areas in London, Essex, Cambridge, and Bedf...
From £87,456
Steve Rolt Home Improvements Ltd was founded in 2016 in Buntingford, Hertfordshire, and from small beginnings, has gone from stren...
From £87,504
WALKERN CONSTRUCTION LIMITED is an established and experienced local extension builder in East Hertfordshire. Please contact us for a free, no obli...
From £87,456
Relax... you have found a reliable extension builder in East Hertfordshire. Up and Out Builds Ltd is a friendly and reliable company based in East ...
From £87,320
Bournes Projects LTD is an established and experienced local extension builder in East Hertfordshire. Please contact us for a free, no obligation q...
From £87,096
Relax... you have found a reliable extension builder in East Hertfordshire. GB Build is a friendly and reliable company based in East Hertfordshire...
From £87,232
Need an Extension Builder in East Hertfordshire? JK Character Construction Ltd has been helping local clients (20 mile radius) with their extension...
From £87,160
Experienced extension builder ready to quote for your work. Precision Roofing & Building Maintenance is the best extension builder in East Hertford...

Building a granny annexe ranges from £87,096 (GB Build based in SG2) to £87,504 (WALKERN CONSTRUCTION LIMITED based in SG2), 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 East Hertfordshire by posting a job with HaMuch. We will send it to extension builders in East Hertfordshire who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near East Hertfordshire | £44 | £289 |
| Granny Annexe near Ware | £47 | £296 |
| Granny Annexe near Hertford | £46 | £289 |
| Granny Annexe near Stevenage | £44 | £282 |
| Granny Annexe near North Hertfordshire | £44 | £283 |
| Granny Annexe near Welwyn Garden City | £42 | £268 |
| Granny Annexe near Hoddesdon | £46 | £296 |
| Granny Annexe near Hitchin | £43 | £283 |
| Granny Annexe near Letchworth | £44 | £283 |
| Granny Annexe near Bishop's Stortford | £42 | £264 |
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 - £17,792

Two storey extension - £88,438

Build a timber frame extension - £26,292

Build a swimming pool - £81,292

Single storey extension - £60,840

Side return extension - £44,785

Install an RSJ - £2,492

Outbuilding - £10,292

Build a Mansard loft conversion - £52,292

Loft conversion - £36,488

Build a kitchen extension - £42,292

Hip to gable loft conversion - £42,292

Granny annexe - £87,292

Garden office - £10,292

Convert a Garage - £16,292

Garage - £18,792

Build a flat roof extension - £22,292

Build a dormer loft conversion - £42,292

Concrete foundations - £6,542

Convert a bungalow loft - £29,292

Convert a basement - £40,785