Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £35,610
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 £38,040
Brian Oxford
for a reliable friendly family business catering for the clients wishes.

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in PO36 by posting a job with HaMuch and we will send it to extension builders in PO36.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Ryde | £34 | £255 |
| Convert A Basement near Isle of Wight | £34 | £246 |
| Convert A Basement near Gosport | £35 | £246 |
| Convert A Basement near Lee-on-the-Solent | £35 | £249 |
| Convert A Basement near Portsmouth | £36 | £250 |
| Convert A Basement near Fareham | £35 | £250 |
| Convert A Basement near Locks Heath | £33 | £240 |
| Convert A Basement near Havant & Waterloo | £35 | £248 |
| Convert A Basement near Havant | £35 | £249 |
| Convert A Basement 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