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From £87,004
Trusted and professional extension builder in Crumlin. Experienced in all extension buildering work and keeping within budget and on quote. Belfast...

Costs range from £87,004 (Belfast Loft Company based in BT17) to £88,840 (Build a Boiler based in BT67), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Crumlin | £26 | £194 |
| Two Storey Extension near Maghaberry | £31 | £205 |
| Two Storey Extension near Lisburn | £24 | £164 |
| Two Storey Extension near Hillsborough and Culcavy | £25 | £170 |
| Two Storey Extension near Belfast | £23 | £161 |
| Two Storey Extension near Ballyclare | £20 | £124 |
| Two Storey Extension near Carryduff | £23 | £158 |
| Two Storey Extension near Waringstown | £23 | £167 |
| Two Storey Extension near Greenisland | £23 | £153 |
| Two Storey Extension near Holywood | £23 | £159 |
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 - £17,448

Two storey extension - £87,922

Build a timber frame extension - £25,948

Build a swimming pool - £80,948

Single storey extension - £53,960

Side return extension - £40,915

Install an RSJ - £2,148

Outbuilding - £9,948

Build a Mansard loft conversion - £51,948

Loft conversion - £33,263

Build a kitchen extension - £41,948

Hip to gable loft conversion - £41,948

Granny annexe - £86,948

Garden office - £9,948

Convert a Garage - £15,948

Garage - £18,448

Build a flat roof extension - £21,948

Build a dormer loft conversion - £41,948

Concrete foundations - £6,198

Convert a bungalow loft - £28,948

Convert a basement - £36,915