From £17,348
Trusted and professional extension builder in PO8. Experienced in all extension buildering work and keeping within budget and on quote. Richard Tho...
From £17,252
we're Specialists in the following
•roofing
•brickwork
•Repointing
...From £17,268
TP Developments are here to help customers who need an Extension Builder in PO8. We offer a competitive rate to complete all your extension builder...
From £17,300
Relax... you have found a reliable extension builder in PO8. C M BENNETT CONSTRUCTION LTD is a friendly and reliable company based in PO8 who consi...
From £16,684
Need to find an Extension Builder near you for all your extension buildering work?
M G Home Improvements provides a local, trusted extensio...
From £17,260
Maw Carpentry Services are here to help customers who need an Extension Builder in PO8. We offer a competitive rate to complete all your extension ...
From £17,564
Relax... you have found a reliable extension builder in PO8. CLARKE BUILDING SERVICES is a friendly and reliable company based in PO8 who consider ...
From £17,516
NDR BUILDING SERVICES LTD is an established extension buildering business in PO8. We come highly recommended and provide competitive quotes for you...
From £17,228
Mark Creese is an established and experienced local extension builder in PO8. Please contact us for a free, no obligation quote and competitive rat...
From £17,812
Relax... you have found a reliable extension builder in PO8. MC Architectural Design is a friendly and reliable company based in PO8 who consider n...

Underpinning ranges from £16,684 (M G Home Improvements based in PO8) to £17,812 (MC Architectural Design based in PO7), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in PO8 by posting a job with HaMuch and we will send it to extension builders in PO8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Horndean | £35 | £253 |
| Underpin A Building near Waterlooville | £36 | £250 |
| Underpin A Building near Havant | £35 | £249 |
| Underpin A Building near Havant & Waterloo | £35 | £248 |
| Underpin A Building near Portsmouth | £36 | £250 |
| Underpin A Building near Fareham | £35 | £250 |
| Underpin A Building near Gosport | £35 | £246 |
| Underpin A Building near East Hampshire | £38 | £258 |
| Underpin A Building near Lee-on-the-Solent | £35 | £249 |
| Underpin A Building near Chichester | £34 | £242 |
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 - £17,323

Two storey extension - £87,735

Build a timber frame extension - £25,823

Build a swimming pool - £80,823

Single storey extension - £51,464

Side return extension - £39,511

Install an RSJ - £2,023

Outbuilding - £9,823

Build a Mansard loft conversion - £51,823

Loft conversion - £32,093

Build a kitchen extension - £41,823

Hip to gable loft conversion - £41,823

Granny annexe - £86,823

Garden office - £9,823

Convert a Garage - £15,823

Garage - £18,323

Build a flat roof extension - £21,823

Build a dormer loft conversion - £41,823

Concrete foundations - £6,073

Convert a bungalow loft - £28,823

Convert a basement - £35,511