Relax... you have found a reliable extension builder in Greenisland. SM Plumbing & Heating is a friendly and reliable company based in Greenisland ...
From £29,580
Ballantine building solutions is an established extension buildering business in Greenisland. We come highly recommended and provide competitive qu...
From £29,220
Trusted and professional extension builder in Greenisland. Experienced in all extension buildering work and keeping within budget and on quote. DGA...
From £30,570
Designco Ltd is an established extension buildering business in Greenisland. We come highly recommended and provide competitive quotes for your wor...
From £30,480
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in Greenisland by posting a job with HaMuch and we will send it to extension builders in Greenisland.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Convert A Basement near Greenisland | £23 | £153 |
| Convert A Basement near Carrickfergus | £23 | £158 |
| Convert A Basement near Holywood | £23 | £159 |
| Convert A Basement near Belfast | £23 | £161 |
| Convert A Basement near Ballyclare | £20 | £124 |
| Convert A Basement near Bangor | £24 | £183 |
| Convert A Basement near Bangor | £24 | £183 |
| Convert A Basement near Carryduff | £23 | £158 |
| Convert A Basement near Ballygowan | £24 | £183 |
| Convert A Basement 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