From £51,496
Trusted and professional extension builder in Portglenone. Experienced in all work and keeping within budget and on quote. purdy build have many h...
From £51,432
We have over 25 years experience in all building work and renowned for good workmanship All jobs small and large taken on
From £51,608
Need an Extension Builder in Portglenone? SF Carpentry has been helping local clients (20 mile radius) with their jobs for many years. Get a quote...
From £50,976
Have worked in building industry for over 30 years contracts from government to private sector.

Mansard loft conversions range from the cheapest installation of £50,976 (Anak based in BT40) to the dearest of around £51,608 (SF Carpentry based in BT51).
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 Portglenone by posting a job with HaMuch and we'll send it to extension builders in Portglenone.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Ballymoney | £18 | £163 |
| Build A Mansard Loft Conversion near Coleraine | £21 | £181 |
| Build A Mansard Loft Conversion near Ballyclare | £17 | £110 |
| Build A Mansard Loft Conversion near Larne | £15 | £120 |
| Build A Mansard Loft Conversion near Magherafelt | £25 | £200 |
| Build A Mansard Loft Conversion near Crumlin | £22 | £168 |
| Build A Mansard Loft Conversion near Dungiven | £21 | £179 |
| Build A Mansard Loft Conversion near Carrickfergus | £21 | £145 |
| Build A Mansard Loft Conversion near Greenisland | £20 | £134 |
| Build A Mansard Loft Conversion near Holywood | £20 | £138 |
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 - £16,878

Two storey extension - £87,067

Build a timber frame extension - £25,378

Build a swimming pool - £80,378

Single storey extension - £42,560

Side return extension - £34,503

Install an RSJ - £1,578

Outbuilding - £9,378

Build a Mansard loft conversion - £51,378

Loft conversion - £27,919

Build a kitchen extension - £41,378

Hip to gable loft conversion - £41,378

Granny annexe - £86,378

Garden office - £9,378

Convert a Garage - £15,378

Garage - £17,878

Build a flat roof extension - £21,378

Build a dormer loft conversion - £41,378

Concrete foundations - £5,628

Convert a bungalow loft - £28,378

Convert a basement - £30,503