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T.I Building
T.I Building is a trusted extension builder serving customers in Hillsborough and the surrounding area. Contact us to today to get a competitive qu...
"Loft conversion" - BT28, job posted 19/09/26
Mount Oriel Conversions & Extensions
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
"Loft conversion" - BT28, job posted 28/05/26
£26/hr
£173/day
Finch Construction NI
Relax... you have found a reliable extension builder in Hillsborough. Finch Construction NI is a friendly and reliable company based in Hillsboroug...
"Loft conversion" - BT28, job posted 02/02/26
Compare Hillsborough extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Hillsborough and Culcavy | £25 | £170 |
| Extension Builders near Lisburn | £24 | £164 |
| Extension Builders near Maghaberry | £31 | £205 |
| Extension Builders near Ballynahinch | £19 | £189 |
| Extension Builders near Carryduff | £23 | £158 |
| Extension Builders near Saintfield | £23 | £162 |
| Extension Builders near Waringstown | £23 | £167 |
| Extension Builders near Banbridge | £29 | £205 |
| Extension Builders near Belfast | £23 | £161 |
| Extension Builders near Crumlin | £26 | £194 |
Job estimates from extension builders near you
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.
Build a timber frame extension - £25,304
Garden office - £9,304
Granny annexe - £86,304
Build a flat roof extension - £21,304
Convert a Garage - £15,304
Hip to gable loft conversion - £41,304
Convert a bungalow loft - £28,304
Build a dormer loft conversion - £41,304
Build a swimming pool - £80,304
Build a Mansard loft conversion - £51,304
Concrete foundations - £5,554
Underpin a building - £16,804
Two storey extension - £86,956
Convert a basement - £29,670
Side return extension - £33,670
Loft conversion - £27,225
Garage - £17,804
Single storey extension - £41,080
Outbuilding - £9,304
Install an RSJ - £1,504
Build a kitchen extension - £41,304
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