Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,832
Diamond Wight Building is an established and experienced local extension builder in PO36. Please contact us for a free, no obligation quote and com...
From £87,048
Brian Oxford
for a reliable friendly family business catering for the clients wishes.

Building a granny annexe ranges from £86,768 (REDOAK HOMES based in PO36) to £87,048 (B W Oxford Builder based in PO35), 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 PO36 by posting a job with HaMuch. We will send it to extension builders in PO36 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Ryde | £34 | £255 |
| Granny Annexe near Isle of Wight | £34 | £246 |
| Granny Annexe near Gosport | £35 | £246 |
| Granny Annexe near Lee-on-the-Solent | £35 | £249 |
| Granny Annexe near Portsmouth | £36 | £250 |
| Granny Annexe near Fareham | £35 | £250 |
| Granny Annexe near Locks Heath | £33 | £240 |
| Granny Annexe near Havant & Waterloo | £35 | £248 |
| Granny Annexe near Havant | £35 | £249 |
| Granny Annexe near Waterlooville | £36 | £250 |
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 - £17,362

Two storey extension - £87,793

Build a timber frame extension - £25,862

Build a swimming pool - £80,862

Single storey extension - £52,240

Side return extension - £39,948

Install an RSJ - £2,062

Outbuilding - £9,862

Build a Mansard loft conversion - £51,862

Loft conversion - £32,456

Build a kitchen extension - £41,862

Hip to gable loft conversion - £41,862

Granny annexe - £86,862

Garden office - £9,862

Convert a Garage - £15,862

Garage - £18,362

Build a flat roof extension - £21,862

Build a dormer loft conversion - £41,862

Concrete foundations - £6,112

Convert a bungalow loft - £28,862

Convert a basement - £35,948