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Select your affordable Greenisland extension builder
Relax... you have found a reliable extension builder in Greenisland. SM Plumbing & Heating is a friendly and reliable company based in Greenisland ...
From £51,296
Ballantine building solutions is an established extension buildering business in Greenisland. We come highly recommended and provide competitive qu...
From £51,264
Trusted and professional extension builder in Greenisland. Experienced in all extension buildering work and keeping within budget and on quote. DGA...
From £51,384
Designco Ltd is an established extension buildering business in Greenisland. We come highly recommended and provide competitive quotes for your wor...
From £51,376
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 £51,264 (DGA based in BT37) to the dearest of around £51,384 (Designco Ltd based in BT36).
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 Greenisland by posting a job with HaMuch and we'll send it to extension builders in Greenisland.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Mansard Loft Conversion near Greenisland | £23 | £153 |
| Build A Mansard Loft Conversion near Carrickfergus | £23 | £158 |
| Build A Mansard Loft Conversion near Holywood | £23 | £159 |
| Build A Mansard Loft Conversion near Belfast | £23 | £161 |
| Build A Mansard Loft Conversion near Ballyclare | £20 | £124 |
| Build A Mansard Loft Conversion near Bangor | £24 | £183 |
| Build A Mansard Loft Conversion near Bangor | £24 | £183 |
| Build A Mansard Loft Conversion near Carryduff | £23 | £158 |
| Build A Mansard Loft Conversion near Ballygowan | £24 | £183 |
| Build A Mansard Loft Conversion near Larne | £15 | £122 |
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 - £16,838

Two storey extension - £87,006

Build a timber frame extension - £25,338

Build a swimming pool - £80,338

Single storey extension - £41,752

Side return extension - £34,048

Install an RSJ - £1,538

Outbuilding - £9,338

Build a Mansard loft conversion - £51,338

Loft conversion - £27,540

Build a kitchen extension - £41,338

Hip to gable loft conversion - £41,338

Granny annexe - £86,338

Garden office - £9,338

Convert a Garage - £15,338

Garage - £17,838

Build a flat roof extension - £21,338

Build a dormer loft conversion - £41,338

Concrete foundations - £5,588

Convert a bungalow loft - £28,338

Convert a basement - £30,048