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Available extension builders in Down reply
Select your affordable Down extension builder
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 Down. SM Plumbing & Heating is a friendly and reliable company based in Down who consider n...
From £86,944
Ballantine building solutions is an established extension buildering business in Down. We come highly recommended and provide competitive quotes fo...
From £87,076
Designco Ltd is an established extension buildering business in Down. We come highly recommended and provide competitive quotes for your work.
...From £86,764
Trusted and professional extension builder in Down. Experienced in all extension buildering work and keeping within budget and on quote. Extended l...
From £86,896
Trusted and professional extension builder in Down. Experienced in all extension buildering work and keeping within budget and on quote. DGA have m...

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 Down.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Comber | £22 | £160 |
| Two Storey Extension near Holywood | £23 | £159 |
| Two Storey Extension near Ballygowan | £24 | £183 |
| Two Storey Extension near Belfast | £23 | £161 |
| Two Storey Extension near Carryduff | £23 | £158 |
| Two Storey Extension near Bangor | £24 | £183 |
| Two Storey Extension near Bangor | £24 | £183 |
| Two Storey Extension near Greenisland | £23 | £153 |
| Two Storey Extension near Saintfield | £23 | £162 |
| Two Storey Extension near Carrickfergus | £23 | £158 |
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 - £16,802

Two storey extension - £86,953

Build a timber frame extension - £25,302

Build a swimming pool - £80,302

Single storey extension - £41,034

Side return extension - £33,644

Install an RSJ - £1,502

Outbuilding - £9,302

Build a Mansard loft conversion - £51,302

Loft conversion - £27,204

Build a kitchen extension - £41,302

Hip to gable loft conversion - £41,302

Granny annexe - £86,302

Garden office - £9,302

Convert a Garage - £15,302

Garage - £17,802

Build a flat roof extension - £21,302

Build a dormer loft conversion - £41,302

Concrete foundations - £5,552

Convert a bungalow loft - £28,302

Convert a basement - £29,644