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Select your affordable Derby extension builder
Noel Bolding
derby, DE22
Need to find an Extension Builder near you for all your extension buildering work?
BRICKON CONSTRUCTION LIMITED provides a local, trusted e...
John Smoth
Trusted and professional extension builder in Derby. Experienced in all extension buildering work and keeping within budget and on quote. Seerey an...
Alsn Askey
Experienced extension builder ready to quote for your work. Alan Askey Builder is the best extension builder in Derby. No obligation free quotes an...
From £51,896
Derbyshire Bathrooms & Kitchens Ltd is an established and experienced local extension builder in Derby. Please contact us for a free, no obligation...
From £52,112
Need to find an Extension Builder near you for all your extension buildering work?
J Pearson Building provides a local, trusted extension b...
From £51,904
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £51,752
Fitted Solutions was established in 2006 by founder Sam Fisher; with a promise to deliver exceptional craftmanship combined with first class custom...
From £51,744
The Blackbrook Group offers a one-stop shop for your construction project. We offer support from concept through to completion. We start with an in...
From £51,864
Nestled in the rolling hillside of the West Midlands, Derby is a city birthed by the Roman Empire, and grown in the industrial revolution. Initiall...
From £51,776
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Mansard loft conversions range from the cheapest installation of £51,648 (Alan Askey Builder based in DE5) to the dearest of around £52,264 (Seerey and Smith Building Solutions based in DE7).
While these estimates give you a good idea how much you'll pay for a mansard loft conversion, the only way to get an accurate price is to get real quotes from real builders.
Get quotes to install a mansard loft conversion in Derby by posting a job with HaMuch and we'll send it to extension builders in Derby.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Derby | £29 | £227 |
| Build A Mansard Loft Conversion near Erewash | £31 | £234 |
| Build A Mansard Loft Conversion near Amber Valley | £32 | £244 |
| Build A Mansard Loft Conversion near Belper | £32 | £244 |
| Build A Mansard Loft Conversion near Ilkeston | £31 | £236 |
| Build A Mansard Loft Conversion near Heanor | £31 | £236 |
| Build A Mansard Loft Conversion near Long Eaton | £32 | £249 |
| Build A Mansard Loft Conversion near Ripley | £32 | £246 |
| Build A Mansard Loft Conversion near Broxtowe | £34 | £240 |
| Build A Mansard Loft Conversion near Burton upon Trent | £33 | £257 |
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 - £17,376

Two storey extension - £87,814

Build a timber frame extension - £25,876

Build a swimming pool - £80,876

Single storey extension - £52,520

Side return extension - £40,105

Install an RSJ - £2,076

Outbuilding - £9,876

Build a Mansard loft conversion - £51,876

Loft conversion - £32,588

Build a kitchen extension - £41,876

Hip to gable loft conversion - £41,876

Granny annexe - £86,876

Garden office - £9,876

Convert a Garage - £15,876

Garage - £18,376

Build a flat roof extension - £21,876

Build a dormer loft conversion - £41,876

Concrete foundations - £6,126

Convert a bungalow loft - £28,876

Convert a basement - £36,105