From £87,000
Trusted and professional extension builder in Caerleon. Experienced in all extension buildering work and keeping within budget and on quote. A P FO...
From £87,056
Matthew O'Brien is an established and experienced local extension builder in Caerleon. Please contact us for a free, no obligation quote and compet...
From £86,912
Relax... you have found a reliable extension builder in Caerleon. Ace Paving is a friendly and reliable company based in Caerleon who consider no j...
From £86,992
Relax... you have found a reliable extension builder in Caerleon. RKD Maintenance & Construction is a friendly and reliable company based in Caerle...
From £86,760
Sharif General Builder is an established and experienced local extension builder in Caerleon. Please contact us for a free, no obligation quote and...
From £86,792
T Porter Buiding is an established and experienced local extension builder in Caerleon. Please contact us for a free, no obligation quote and compe...
From £86,752
Experienced extension builder ready to quote for your work. Kingsley Developments is the best extension builder in Caerleon. No obligation free quo...
From £86,920
Kingsley Developments is an established and experienced local extension builder in Caerleon. Please contact us for a free, no obligation quote and ...
From £87,304
Experienced extension builder ready to quote for your work. Carter Thomas Construction Ltd is the best extension builder in Caerleon. No obligation...
From £86,712
PMW Property Services Ltd is an established and experienced local extension builder in Caerleon. Please contact us for a free, no obligation quote ...

Building a granny annexe ranges from £86,712 (PMW Property Services Ltd based in NP20) to £87,304 (Carter Thomas Construction Ltd based in NP18), 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 Caerleon by posting a job with HaMuch. We will send it to extension builders in Caerleon who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Newport | £41 | £233 |
| Granny Annexe near Cwmbran | £43 | £219 |
| Granny Annexe near Risca | £32 | £218 |
| Granny Annexe near Pontypool | £30 | £210 |
| Granny Annexe near Caerphilly | £33 | £208 |
| Granny Annexe near Portishead | £33 | £247 |
| Granny Annexe near Clevedon | £32 | £243 |
| Granny Annexe near Cardiff | £35 | £219 |
| Granny Annexe near Penarth | £36 | £217 |
| Granny Annexe near Church Village | £34 | £214 |
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 - £17,420

Two storey extension - £87,880

Build a timber frame extension - £25,920

Build a swimming pool - £80,920

Single storey extension - £53,400

Side return extension - £40,600

Install an RSJ - £2,120

Outbuilding - £9,920

Build a Mansard loft conversion - £51,920

Loft conversion - £33,000

Build a kitchen extension - £41,920

Hip to gable loft conversion - £41,920

Granny annexe - £86,920

Garden office - £9,920

Convert a Garage - £15,920

Garage - £18,420

Build a flat roof extension - £21,920

Build a dormer loft conversion - £41,920

Concrete foundations - £6,170

Convert a bungalow loft - £28,920

Convert a basement - £36,600