From £40,650
Trusted and professional extension builder in Ashendon. Experienced in all extension buildering work and keeping within budget and on quote. BUILDR...
From £38,940
Relax... you have found a reliable extension builder in Ashendon. Trew Builders is a friendly and reliable company based in Ashendon who consider n...
From £39,390
Platinum Build Ltd are here to help customers who need an Extension Builder in Ashendon. We offer a competitive rate to complete all your extension...
From £40,380
Thame Builders Ltd: Your Local Professional Building Experts.\n\nAt Thame Builders, we pride ourselves on being more than just a construction compa...
From £40,920
done lots of extensions and refurbishment of houses from 2004-2012 in london from 2012 till now in oxfordshire area.
From £42,540
Trusted and professional extension builder in Ashendon. Experienced in all extension buildering work and keeping within budget and on quote. C HORW...
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 £39,300
D M B E BUILDPLUS is an established and experienced local extension builder in Ashendon. Please contact us for a free, no obligation quote and comp...
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...

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 Ashendon by posting a job with HaMuch and we will send it to extension builders in Ashendon.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Aylesbury Vale | £36 | £246 |
| Convert A Basement near Aylesbury | £42 | £270 |
| Convert A Basement near Bicester | £35 | £249 |
| Convert A Basement near Cherwell | £35 | £249 |
| Convert A Basement near Oxford | £37 | £265 |
| Convert A Basement near South Oxfordshire | £36 | £253 |
| Convert A Basement near Wycombe | £39 | £271 |
| Convert A Basement near Leighton Buzzard | £38 | £270 |
| Convert A Basement near High Wycombe | £39 | £272 |
| Convert A Basement near Hazlemere | £40 | £272 |
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 - £17,718

Two storey extension - £88,328

Build a timber frame extension - £26,218

Build a swimming pool - £81,218

Single storey extension - £59,368

Side return extension - £43,957

Install an RSJ - £2,418

Outbuilding - £10,218

Build a Mansard loft conversion - £52,218

Loft conversion - £35,798

Build a kitchen extension - £42,218

Hip to gable loft conversion - £42,218

Granny annexe - £87,218

Garden office - £10,218

Convert a Garage - £16,218

Garage - £18,718

Build a flat roof extension - £22,218

Build a dormer loft conversion - £42,218

Concrete foundations - £6,468

Convert a bungalow loft - £29,218

Convert a basement - £39,957