Alan Hicks
Need to find an Extension Builder near you for all your extension buildering work?
A G Hicks Building Services provides a local, trusted ex...
Trusted and professional extension builder in NN3. Experienced in all extension buildering work and keeping within budget and on quote. Northants G...
M Home Renovations is an established extension buildering business in NN3. We come highly recommended and provide competitive quotes for your work....
Walsh Builders Ltd is an established and experienced local extension builder in NN3. Please contact us for a free, no obligation quote and competit...
Relax... you have found a reliable extension builder in NN3. Wright Building is a friendly and reliable company based in NN3 who consider no job as...
Need an Extension Builder in NN3? DAB & K&G Building Services has been helping local clients (20 mile radius) with their extension buildering jobs ...
Samrai Associates was founded by Hars Samrai in Northampton in order to provide clients with a prompt and robust Architectural Service. Over time m...
Neil Donlevy
Need to find an Extension Builder near you for all your extension buildering work?
The Builders - Northampton Limited provides a local, tru...
Paul Watts
We have a great team behind us, we offer friendly, competitive and professional service. With years of experience among the trades, there's not muc...
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 £51,408 (Artizan Roofing based in NN2) to the dearest of around £52,248 (Samrai Associates Limited based in NN3).
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 NN3 by posting a job with HaMuch and we'll send it to extension builders in NN3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Northampton | £35 | £239 |
| Build A Mansard Loft Conversion near Wellingborough | £39 | £251 |
| Build A Mansard Loft Conversion near Rushden | £34 | £231 |
| Build A Mansard Loft Conversion near Kettering | £34 | £237 |
| Build A Mansard Loft Conversion near Daventry | £31 | £230 |
| Build A Mansard Loft Conversion near Market Harborough | £31 | £217 |
| Build A Mansard Loft Conversion near Milton Keynes | £39 | £263 |
| Build A Mansard Loft Conversion near Corby | £30 | £214 |
| Build A Mansard Loft Conversion near South Bedfordshire | £45 | £278 |
| Build A Mansard Loft Conversion near Bedford | £45 | £278 |
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 - £17,371

Two storey extension - £87,807

Build a timber frame extension - £25,871

Build a swimming pool - £80,871

Single storey extension - £52,424

Side return extension - £40,051

Install an RSJ - £2,071

Outbuilding - £9,871

Build a Mansard loft conversion - £51,871

Loft conversion - £32,543

Build a kitchen extension - £41,871

Hip to gable loft conversion - £41,871

Granny annexe - £86,871

Garden office - £9,871

Convert a Garage - £15,871

Garage - £18,371

Build a flat roof extension - £21,871

Build a dormer loft conversion - £41,871

Concrete foundations - £6,121

Convert a bungalow loft - £28,871

Convert a basement - £36,051