From £17,588
Relax... you have found a reliable extension builder in Lee-on-the-solent. BRIAN NEWLYN BUILDERS is a friendly and reliable company based in Lee-on...
From £17,476
O NEILL CONSTRUCTION LTD is an established extension buildering business in Lee-on-the-solent. We come highly recommended and provide competitive q...
From £17,516
HISTORIC BUILD RESTORATION LTD are here to help customers who need an Extension Builder in Lee-on-the-solent. We offer a competitive rate to comple...
From £17,428
Relax... you have found a reliable extension builder in Lee-on-the-solent. MA Builders is a friendly and reliable company based in Lee-on-the-solen...
From £17,436
Trusted and professional extension builder in Lee-on-the-solent. Experienced in all extension buildering work and keeping within budget and on quot...
From £17,500
We are experts in cavity wall insulation, cavity wall insulation removal, loft insulation, loft boarding, room in roof insulation, chemical damp pr...
From £17,252
Allweather Building Services Ltd are here to help customers who need an Extension Builder in Lee-on-the-solent. We offer a competitive rate to comp...
From £17,436
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,372
Need an Extension Builder in Lee-on-the-solent? GRL Building Services Ltd has been helping local clients (20 mile radius) with their extension buil...

Underpinning ranges from £17,252 (Allweather Building Services Ltd based in PO12) to £17,588 (BRIAN NEWLYN BUILDERS based in PO13), 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 Lee-on-the-solent by posting a job with HaMuch and we will send it to extension builders in Lee-on-the-solent.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Lee-on-the-Solent | £35 | £249 |
| Underpin A Building near Gosport | £35 | £246 |
| Underpin A Building near Fareham | £35 | £250 |
| Underpin A Building near Portsmouth | £36 | £250 |
| Underpin A Building near Locks Heath | £33 | £240 |
| Underpin A Building near Isle of Wight | £34 | £246 |
| Underpin A Building near Hedge End | £34 | £244 |
| Underpin A Building near Waterlooville | £36 | £250 |
| Underpin A Building near Havant & Waterloo | £35 | £248 |
| Underpin A Building near Havant | £35 | £249 |
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 - £17,433

Two storey extension - £87,899

Build a timber frame extension - £25,933

Build a swimming pool - £80,933

Single storey extension - £53,656

Side return extension - £40,744

Install an RSJ - £2,133

Outbuilding - £9,933

Build a Mansard loft conversion - £51,933

Loft conversion - £33,120

Build a kitchen extension - £41,933

Hip to gable loft conversion - £41,933

Granny annexe - £86,933

Garden office - £9,933

Convert a Garage - £15,933

Garage - £18,433

Build a flat roof extension - £21,933

Build a dormer loft conversion - £41,933

Concrete foundations - £6,183

Convert a bungalow loft - £28,933

Convert a basement - £36,744