From £88,012
Whites Carpentry & Building prides in delivering an excellent extension buildering service and value for money in PO7 and the surrounding areas. O...
From £89,644
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 £88,216
We are a small family run business with over 20 years experience in brickwork, bathroom/kitchen fitting, roofing, landscaping, fencing, tiling and ...
From £88,168
, BN18
Futureways Design and Build are here to help customers who need an Extension Builder in PO7. We offer a competitive rate to complete all your exten...
From £87,628
Park Building Services Ltd is a trusted extension builder serving customers in PO7 and the surrounding area. Contact us to today to get a competiti...
From £88,564
Giles Dixon is an experienced Project Manager with over 30 years experience, having worked from the ground up starting in 1984 as an apprentice ele...
From £88,192
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £88,084
K A Griffin General Builder is an established extension buildering business in PO7. We come highly recommended and provide competitive quotes for y...
From £87,652
Trusted and professional extension builder in PO7. Experienced in all extension buildering work and keeping within budget and on quote. Paul Ramsey...
From £87,592
Need to find an Extension Builder near you for all your extension buildering work?
Knights Construction provides a local, trusted extension...

Costs range from £87,592 (Knights Construction based in BN18) to £89,644 (R&B Property Improvements based in PO9), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to PO7.
"Two storey extension" - PORTSMOUTH, job posted 07/08/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Waterlooville | £36 | £250 |
| Two Storey Extension near Horndean | £35 | £253 |
| Two Storey Extension near Havant | £35 | £249 |
| Two Storey Extension near Havant & Waterloo | £35 | £248 |
| Two Storey Extension near Portsmouth | £36 | £250 |
| Two Storey Extension near Fareham | £35 | £250 |
| Two Storey Extension near Gosport | £35 | £246 |
| Two Storey Extension near Lee-on-the-Solent | £35 | £249 |
| Two Storey Extension near Locks Heath | £33 | £240 |
| Two Storey Extension 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 - £17,617

Two storey extension - £88,175

Build a timber frame extension - £26,117

Build a swimming pool - £81,117

Single storey extension - £57,336

Side return extension - £42,814

Install an RSJ - £2,317

Outbuilding - £10,117

Build a Mansard loft conversion - £52,117

Loft conversion - £34,845

Build a kitchen extension - £42,117

Hip to gable loft conversion - £42,117

Granny annexe - £87,117

Garden office - £10,117

Convert a Garage - £16,117

Garage - £18,617

Build a flat roof extension - £22,117

Build a dormer loft conversion - £42,117

Concrete foundations - £6,367

Convert a bungalow loft - £29,117

Convert a basement - £38,814