Relax... you have found a reliable extension builder in BT13. SM Plumbing & Heating is a friendly and reliable company based in BT13 who consider n...
From £87,004
Trusted and professional extension builder in BT13. Experienced in all extension buildering work and keeping within budget and on quote. Belfast Lo...
From £86,764
Trusted and professional extension builder in BT13. Experienced in all extension buildering work and keeping within budget and on quote. Extended l...
From £87,076
Designco Ltd is an established extension buildering business in BT13. We come highly recommended and provide competitive quotes for your work.
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Costs range from £86,764 (Extended living by Gilbert-Ash based in BT12) to £87,076 (Designco Ltd based in BT36), 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 Belfast | £23 | £161 |
| Two Storey Extension near Carryduff | £23 | £158 |
| Two Storey Extension near Holywood | £23 | £159 |
| Two Storey Extension near Greenisland | £23 | £153 |
| Two Storey Extension near Lisburn | £24 | £164 |
| Two Storey Extension near Comber | £22 | £160 |
| Two Storey Extension near Crumlin | £26 | £194 |
| Two Storey Extension near Ballyclare | £20 | £124 |
| Two Storey Extension near Ballygowan | £24 | £183 |
| Two Storey Extension near Hillsborough and Culcavy | £25 | £170 |
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 - £16,816

Two storey extension - £86,974

Build a timber frame extension - £25,316

Build a swimming pool - £80,316

Single storey extension - £41,320

Side return extension - £33,805

Install an RSJ - £1,516

Outbuilding - £9,316

Build a Mansard loft conversion - £51,316

Loft conversion - £27,338

Build a kitchen extension - £41,316

Hip to gable loft conversion - £41,316

Granny annexe - £86,316

Garden office - £9,316

Convert a Garage - £15,316

Garage - £17,816

Build a flat roof extension - £21,316

Build a dormer loft conversion - £41,316

Concrete foundations - £5,566

Convert a bungalow loft - £28,316

Convert a basement - £29,805