From £9,832
Diamond Wight Building is an established and experienced local extension builder in PO37. Please contact us for a free, no obligation quote and com...
From £9,800
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,000
With an interest in architecture and interior design I’ve always enjoyed being creative with RAW materials and building something different.Havin...
From £10,168
MJP Building Services are here to help customers who need an Extension Builder in PO37. We offer a competitive rate to complete all your extension ...
From £10,024
Experienced extension builder ready to quote for your work. STONEHAM CONSTRUCTION LIMITED is the best extension builder in PO37. No obligation free...
From £10,048
for a reliable friendly family business catering for the clients wishes.
From £9,880
P D Builders is an established and experienced local extension builder in PO37. Please contact us for a free, no obligation quote and competitive r...
From £9,864
Need to find an Extension Builder near you for all your extension buildering work?
Glenn Millmore provides a local, trusted extension build...

Outbuilding costs in PO37 range from the cheapest of £9,344 (G A Headlam based in PO38) to the dearest of £10,168 (MJP Building Services based in PO38), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in PO37 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Isle of Wight | £34 | £246 |
| Outbuilding near Gosport | £35 | £246 |
| Outbuilding near Lee-on-the-Solent | £35 | £249 |
| Outbuilding near Portsmouth | £36 | £250 |
| Outbuilding near Fareham | £35 | £250 |
| Outbuilding near Locks Heath | £33 | £240 |
| Outbuilding near Havant & Waterloo | £35 | £248 |
| Outbuilding near Havant | £35 | £249 |
| Outbuilding near Waterlooville | £36 | £250 |
| Outbuilding near Horndean | £35 | £253 |
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 - £17,373

Two storey extension - £87,809

Build a timber frame extension - £25,873

Build a swimming pool - £80,873

Single storey extension - £52,456

Side return extension - £40,069

Install an RSJ - £2,073

Outbuilding - £9,873

Build a Mansard loft conversion - £51,873

Loft conversion - £32,558

Build a kitchen extension - £41,873

Hip to gable loft conversion - £41,873

Granny annexe - £86,873

Garden office - £9,873

Convert a Garage - £15,873

Garage - £18,373

Build a flat roof extension - £21,873

Build a dormer loft conversion - £41,873

Concrete foundations - £6,123

Convert a bungalow loft - £28,873

Convert a basement - £36,069