From £21,432
We have over 25 years experience in all building work and renowned for good workmanship All jobs small and large taken on
From £21,496
Trusted and professional extension builder in Cargan. Experienced in all work and keeping within budget and on quote. purdy build have many happy ...
From £21,296
Been in business as 18 years alway put clients first and never had any combacks
From £20,976
Have worked in building industry for over 30 years contracts from government to private sector.
From £21,376
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of work in Cargan ...

A flat roof extension ranges from the cheapest of £20,976 (Anak based in BT40) to the dearest of £21,496 (Purdy build based in bt53), 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 Cargan by posting a job with HaMuch. We'll send it to extension builders in Cargan.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Ballyclare | £17 | £110 |
| Build A Flat Roof Extension near Ballymoney | £18 | £163 |
| Build A Flat Roof Extension near Magherafelt | £25 | £200 |
| Build A Flat Roof Extension near Larne | £15 | £120 |
| Build A Flat Roof Extension near Crumlin | £22 | £168 |
| Build A Flat Roof Extension near Coleraine | £21 | £181 |
| Build A Flat Roof Extension near Greenisland | £20 | £134 |
| Build A Flat Roof Extension near Carrickfergus | £21 | £145 |
| Build A Flat Roof Extension near Belfast | £20 | £137 |
| Build A Flat Roof Extension near Holywood | £20 | £138 |
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 - £16,815

Two storey extension - £86,973

Build a timber frame extension - £25,315

Build a swimming pool - £80,315

Single storey extension - £41,304

Side return extension - £33,796

Install an RSJ - £1,515

Outbuilding - £9,315

Build a Mansard loft conversion - £51,315

Loft conversion - £27,330

Build a kitchen extension - £41,315

Hip to gable loft conversion - £41,315

Granny annexe - £86,315

Garden office - £9,315

Convert a Garage - £15,315

Garage - £17,815

Build a flat roof extension - £21,315

Build a dormer loft conversion - £41,315

Concrete foundations - £5,565

Convert a bungalow loft - £28,315

Convert a basement - £29,796