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T.I Building is a trusted extension builder serving customers in Hillsborough And Culcavy and the surrounding area. Contact us to today to get a co...
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
From £21,336
Trusted and professional extension builder in Hillsborough And Culcavy. Experienced in all extension buildering work and keeping within budget and ...
From £21,384
Relax... you have found a reliable extension builder in Hillsborough And Culcavy. Finch Construction NI is a friendly and reliable company based in...

A flat roof extension ranges from the cheapest of £21,136 (Mount Oriel Conversions & Extensions based in BT8) to the dearest of £22,560 (Build a Boiler based in BT67), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in Hillsborough And Culcavy by posting a job with HaMuch. We'll send it to extension builders in Hillsborough And Culcavy.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Hillsborough and Culcavy | £25 | £170 |
| Build A Flat Roof Extension near Lisburn | £24 | £164 |
| Build A Flat Roof Extension near Maghaberry | £31 | £205 |
| Build A Flat Roof Extension near Carryduff | £23 | £158 |
| Build A Flat Roof Extension near Waringstown | £23 | £167 |
| Build A Flat Roof Extension near Ballynahinch | £19 | £189 |
| Build A Flat Roof Extension near Saintfield | £23 | £162 |
| Build A Flat Roof Extension near Belfast | £23 | £161 |
| Build A Flat Roof Extension near Crumlin | £26 | £194 |
| Build A Flat Roof Extension near Banbridge | £29 | £205 |
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 - £17,063

Two storey extension - £87,345

Build a timber frame extension - £25,563

Build a swimming pool - £80,563

Single storey extension - £46,264

Side return extension - £36,586

Install an RSJ - £1,763

Outbuilding - £9,563

Build a Mansard loft conversion - £51,563

Loft conversion - £29,655

Build a kitchen extension - £41,563

Hip to gable loft conversion - £41,563

Granny annexe - £86,563

Garden office - £9,563

Convert a Garage - £15,563

Garage - £18,063

Build a flat roof extension - £21,563

Build a dormer loft conversion - £41,563

Concrete foundations - £5,813

Convert a bungalow loft - £28,563

Convert a basement - £32,586