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Tekton Construction NW is an established extension buildering business in Thornton. We come highly recommended and provide competitive quotes for y...
Smedley Construction Ltd is a trusted extension builder serving customers in Thornton and the surrounding area. Contact us to today to get a compet...
Need to find an Extension Builder near you for all your extension buildering work?
Poulton Building & Joinery Services provides a local, tr...
Relax... you have found a reliable extension builder in Thornton. Green Generation Builders Ltd is a friendly and reliable company based in Thornto...
Michael Conway
Conway Construction Ltd is an established extension buildering business in Thornton. We come highly recommended and provide competitive quotes for ...
COASTAL CONSTRUCTION LTD is an established and experienced local extension builder in Thornton. Please contact us for a free, no obligation quote a...
J D Holland Building Services is a trusted extension builder serving customers in Thornton and the surrounding area. Contact us to today to get a c...
JSM BUILDING SOLUTIONS LIMITED is a trusted extension builder serving customers in Thornton and the surrounding area. Contact us to today to get a ...
From £51,824
Keith Williams
We do it all from plan to completion
25 yrs and no complaints ..
modern and contemporary
kitchen bathrooms
From £51,648
Interbuild is an established extension buildering business in Thornton. We come highly recommended and provide competitive quotes for your work.

Mansard loft conversions range from the cheapest installation of £51,496 (COASTAL CONSTRUCTION LTD based in FY5) to the dearest of around £51,848 (Green Generation Builders Ltd based in FY3).
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 Thornton by posting a job with HaMuch and we'll send it to extension builders in Thornton.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Thornton | £29 | £211 |
| Build A Mansard Loft Conversion near Fleetwood | £28 | £206 |
| Build A Mansard Loft Conversion near Blackpool | £29 | £209 |
| Build A Mansard Loft Conversion near Lytham St Annes | £28 | £206 |
| Build A Mansard Loft Conversion near Fulwood | £31 | £217 |
| Build A Mansard Loft Conversion near Penwortham | £30 | £218 |
| Build A Mansard Loft Conversion near Preston | £30 | £218 |
| Build A Mansard Loft Conversion near Lancaster | £25 | £211 |
| Build A Mansard Loft Conversion near Morecambe | £25 | £212 |
| Build A Mansard Loft Conversion near Southport | £27 | £198 |
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 - £17,185

Two storey extension - £87,527

Build a timber frame extension - £25,685

Build a swimming pool - £80,685

Single storey extension - £48,696

Side return extension - £37,954

Install an RSJ - £1,885

Outbuilding - £9,685

Build a Mansard loft conversion - £51,685

Loft conversion - £30,795

Build a kitchen extension - £41,685

Hip to gable loft conversion - £41,685

Granny annexe - £86,685

Garden office - £9,685

Convert a Garage - £15,685

Garage - £18,185

Build a flat roof extension - £21,685

Build a dormer loft conversion - £41,685

Concrete foundations - £5,935

Convert a bungalow loft - £28,685

Convert a basement - £33,954