From £35,400
Experienced extension builder ready to quote for your work. HOLLYBANK BUILDING is the best extension builder in PO10. No obligation free quotes and...
From £31,725
Need an Extension Builder in PO10? CHT Building Solutions Ltd/Renaissance Orangeries has been helping local clients (20 mile radius) with their ext...
From £34,200
A T Holmes & Son Chimney Sweep is a trusted extension builder serving customers in PO10 and the surrounding area. Contact us to today to get a comp...
From £31,425
Park Building Services Ltd is a trusted extension builder serving customers in PO10 and the surrounding area. Contact us to today to get a competit...
From £44,025
We are a Small Family run business with over 30 years experience in the building trade, Carpentry is my main trade, with NVQ Level 2.
From £33,000
Need an Extension Builder in PO10? Aspen Garden Rooms has been helping local clients (20 mile radius) with their extension buildering jobs for many...
From £32,850
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £34,800
Solent Home Improvements are here to help customers who need an Extension Builder in PO10. We offer a competitive rate to complete all your extensi...
From £33,450
Solent Home Improvements are here to help customers who need an Extension Builder in PO10. We offer a competitive rate to complete all your extensi...
From £33,975
Relax... you have found a reliable extension builder in PO10. SYNERGY Home Renovations is a friendly and reliable company based in PO10 who conside...

Comparing extension builders estimates for Loft conversion 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 of a loft conversion in PO10 by posting your job to extension builders in PO10.
"Loft conversion" - HAVANT & WATERLOO, job posted 11/02/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Loft Conversion near Havant & Waterloo | £35 | £248 |
| Loft Conversion near Havant | £35 | £249 |
| Loft Conversion near Waterlooville | £36 | £250 |
| Loft Conversion near Horndean | £35 | £253 |
| Loft Conversion near Chichester | £34 | £242 |
| Loft Conversion near Portsmouth | £36 | £250 |
| Loft Conversion near Gosport | £35 | £246 |
| Loft Conversion near Fareham | £35 | £250 |
| Loft Conversion near Bognor Regis | £35 | £247 |
| Loft Conversion near Lee-on-the-Solent | £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 - £17,578

Two storey extension - £88,118

Build a timber frame extension - £26,078

Build a swimming pool - £81,078

Single storey extension - £56,568

Side return extension - £42,382

Install an RSJ - £2,278

Outbuilding - £10,078

Build a Mansard loft conversion - £52,078

Loft conversion - £34,485

Build a kitchen extension - £42,078

Hip to gable loft conversion - £42,078

Granny annexe - £87,078

Garden office - £10,078

Convert a Garage - £16,078

Garage - £18,578

Build a flat roof extension - £22,078

Build a dormer loft conversion - £42,078

Concrete foundations - £6,328

Convert a bungalow loft - £29,078

Convert a basement - £38,382