From £10,176
Hermitage, PO10
Experienced extension builder ready to quote for your work. HOLLYBANK BUILDING is the best extension builder in Hermitage. No obligation free quote...
From £9,784
Need an Extension Builder in Hermitage? CHT Building Solutions Ltd/Renaissance Orangeries has been helping local clients (20 mile radius) with thei...
From £10,048
A T Holmes & Son Chimney Sweep is a trusted extension builder serving customers in Hermitage and the surrounding area. Contact us to today to get a...
From £9,752
Park Building Services Ltd is a trusted extension builder serving customers in Hermitage and the surrounding area. Contact us to today to get a com...
From £11,096
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 £9,920
Need an Extension Builder in Hermitage? Aspen Garden Rooms has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £9,904
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,112
Solent Home Improvements are here to help customers who need an Extension Builder in Hermitage. We offer a competitive rate to complete all your ex...
From £9,968
Solent Home Improvements are here to help customers who need an Extension Builder in Hermitage. We offer a competitive rate to complete all your ex...
From £10,024
Relax... you have found a reliable extension builder in Hermitage. SYNERGY Home Renovations is a friendly and reliable company based in Hermitage w...

Garden offices range from the cheapest of £9,752 (Park Building Services Ltd based in PO9) to the dearest of £11,096 (R&B Property Improvements based in PO9), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in Hermitage by posting a job with HaMuch. We'll send it to extension builders in Hermitage.
"Garden office" - PO9, job posted 01/05/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Havant & Waterloo | £35 | £248 |
| Garden Office near Havant | £35 | £249 |
| Garden Office near Waterlooville | £36 | £250 |
| Garden Office near Horndean | £35 | £253 |
| Garden Office near Chichester | £34 | £242 |
| Garden Office near Portsmouth | £36 | £250 |
| Garden Office near Gosport | £35 | £246 |
| Garden Office near Fareham | £35 | £250 |
| Garden Office near Bognor Regis | £35 | £247 |
| Garden Office 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