From £40,650
Trusted and professional extension builder in HP17. Experienced in all extension buildering work and keeping within budget and on quote. BUILDRIGHT...
From £40,200
AMG Roofing (Bucks) Ltd is owned by Ashley Gibson, a small, friendly, family run business that began in 2020, as a result of the Pandemic and an ac...
From £38,400
We are ADC Landscaping & Gardening, owned and run by Ashley Collier. We are a family business based in Aylesbury, Buckinghamshire, and cover all as...
From £42,540
Trusted and professional extension builder in HP17. Experienced in all extension buildering work and keeping within budget and on quote. C HORWOOD ...
From £37,050
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £37,140
Experienced extension builder ready to quote for your work. VICTOR KING CONSTRUCTION is the best extension builder in HP17. No obligation free quot...
From £42,450
Just Lofts are here to help customers who need an Extension Builder in HP17. We offer a competitive rate to complete all your extension buildering ...
From £39,300
D M B E BUILDPLUS is an established and experienced local extension builder in HP17. Please contact us for a free, no obligation quote and competit...
From £40,920
Relax... you have found a reliable extension builder in HP17. A J Shaw Building Services is a friendly and reliable company based in HP17 who consi...

Comparing extension builders estimates for a Convert a basement 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 to convert a basement in HP17 by posting a job with HaMuch and we will send it to extension builders in HP17.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Aylesbury | £42 | £270 |
| Convert A Basement near Aylesbury Vale | £36 | £246 |
| Convert A Basement near Wycombe | £39 | £271 |
| Convert A Basement near Hazlemere | £40 | £272 |
| Convert A Basement near High Wycombe | £39 | £272 |
| Convert A Basement near Chesham | £42 | £277 |
| Convert A Basement near Leighton Buzzard | £38 | £270 |
| Convert A Basement near Berkhamsted | £41 | £263 |
| Convert A Basement near South Oxfordshire | £36 | £253 |
| Convert A Basement near Bicester | £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 - £17,700

Two storey extension - £88,300

Build a timber frame extension - £26,200

Build a swimming pool - £81,200

Single storey extension - £59,000

Side return extension - £43,750

Install an RSJ - £2,400

Outbuilding - £10,200

Build a Mansard loft conversion - £52,200

Loft conversion - £35,625

Build a kitchen extension - £42,200

Hip to gable loft conversion - £42,200

Granny annexe - £87,200

Garden office - £10,200

Convert a Garage - £16,200

Garage - £18,700

Build a flat roof extension - £22,200

Build a dormer loft conversion - £42,200

Concrete foundations - £6,450

Convert a bungalow loft - £29,200

Convert a basement - £39,750