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Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
Relax... you have found a reliable extension builder in BT8. SM Plumbing & Heating is a friendly and reliable company based in BT8 who consider no ...
From £86,764
Trusted and professional extension builder in BT8. Experienced in all extension buildering work and keeping within budget and on quote. Extended li...

Costs range from £86,704 (Mount Oriel Conversions & Extensions based in BT8) to £87,232 (AK Building Services based in BT8), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to BT8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Carryduff | £23 | £158 |
| Two Storey Extension near Belfast | £23 | £161 |
| Two Storey Extension near Saintfield | £23 | £162 |
| Two Storey Extension near Lisburn | £24 | £164 |
| Two Storey Extension near Comber | £22 | £160 |
| Two Storey Extension near Ballygowan | £24 | £183 |
| Two Storey Extension near Holywood | £23 | £159 |
| Two Storey Extension near Ballynahinch | £19 | £189 |
| Two Storey Extension near Hillsborough and Culcavy | £25 | £170 |
| Two Storey Extension near Greenisland | £23 | £153 |
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 - £16,792

Two storey extension - £86,938

Build a timber frame extension - £25,292

Build a swimming pool - £80,292

Single storey extension - £40,840

Side return extension - £33,535

Install an RSJ - £1,492

Outbuilding - £9,292

Build a Mansard loft conversion - £51,292

Loft conversion - £27,113

Build a kitchen extension - £41,292

Hip to gable loft conversion - £41,292

Granny annexe - £86,292

Garden office - £9,292

Convert a Garage - £15,292

Garage - £17,792

Build a flat roof extension - £21,292

Build a dormer loft conversion - £41,292

Concrete foundations - £5,542

Convert a bungalow loft - £28,292

Convert a basement - £29,535