Relax... you have found a reliable extension builder in Greenisland. SM Plumbing & Heating is a friendly and reliable company based in Greenisland ...
From £41,296
Ballantine building solutions is an established extension buildering business in Greenisland. We come highly recommended and provide competitive qu...
From £41,264
Trusted and professional extension builder in Greenisland. Experienced in all extension buildering work and keeping within budget and on quote. DGA...
From £41,384
Designco Ltd is an established extension buildering business in Greenisland. We come highly recommended and provide competitive quotes for your wor...
From £41,376
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

In Greenisland, prices for dormer loft conversions range from £41,264 (DGA based in BT37) to £41,384 (Designco Ltd based in BT36), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for.
The best way to get an accurate price is to compare quotes from extension builders in Greenisland. Post your job on HaMuch now and we'll put you in touch with available extension builders.
"Dormer loft conversion" - NEWTOWNABBEY, job posted 03/11/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Dormer Loft Conversion near Greenisland | £23 | £153 |
| Build A Dormer Loft Conversion near Carrickfergus | £23 | £158 |
| Build A Dormer Loft Conversion near Holywood | £23 | £159 |
| Build A Dormer Loft Conversion near Belfast | £23 | £161 |
| Build A Dormer Loft Conversion near Ballyclare | £20 | £124 |
| Build A Dormer Loft Conversion near Bangor | £24 | £183 |
| Build A Dormer Loft Conversion near Bangor | £24 | £183 |
| Build A Dormer Loft Conversion near Carryduff | £23 | £158 |
| Build A Dormer Loft Conversion near Ballygowan | £24 | £183 |
| Build A Dormer 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