From £25,400
T.I Building is a trusted extension builder serving customers in Randalstown and the surrounding area. Contact us to today to get a competitive quo...
From £25,432
We have over 25 years experience in all building work and renowned for good workmanship All jobs small and large taken on
From £25,904
FJS CONTRACTS LTD are here to help customers who need an Extension Builder in Randalstown. We offer a competitive rate to complete all your extensi...
From £26,016
Seamus Mcmullan building and joinery is an established extension buildering business in Randalstown. We come highly recommended and provide competi...
From £25,368
Relax... you have found a reliable extension builder in Randalstown. SM Plumbing & Heating is a friendly and reliable company based in Randalstown ...
From £25,296
Been in business as 18 years alway put clients first and never had any combacks
From £25,336
Trusted and professional extension builder in Randalstown. Experienced in all extension buildering work and keeping within budget and on quote. Bel...
From £25,296
Ballantine building solutions is an established extension buildering business in Randalstown. We come highly recommended and provide competitive qu...
From £25,376
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

A timber frame extension built in Randalstown typically ranges from £25,296 (Oakmore Contracts based in BT45) to £26,560 (Build a Boiler based in BT67), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.
Comparing extension builders estimates for building a timber frame extension gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build a timber frame extension in Randalstown by posting a job with HaMuch and we'll send it to extension builders in Randalstown.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Crumlin | £26 | £194 |
| Build A Timber Frame Extension near Ballyclare | £20 | £124 |
| Build A Timber Frame Extension near Magherafelt | £30 | £238 |
| Build A Timber Frame Extension near Maghaberry | £31 | £205 |
| Build A Timber Frame Extension near Greenisland | £23 | £153 |
| Build A Timber Frame Extension near Belfast | £23 | £161 |
| Build A Timber Frame Extension near Lisburn | £24 | £164 |
| Build A Timber Frame Extension near Carrickfergus | £23 | £158 |
| Build A Timber Frame Extension near Hillsborough and Culcavy | £25 | £170 |
| Build A Timber Frame Extension near Larne | £15 | £122 |
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 - £17,098

Two storey extension - £87,398

Build a timber frame extension - £25,598

Build a swimming pool - £80,598

Single storey extension - £46,968

Side return extension - £36,982

Install an RSJ - £1,798

Outbuilding - £9,598

Build a Mansard loft conversion - £51,598

Loft conversion - £29,985

Build a kitchen extension - £41,598

Hip to gable loft conversion - £41,598

Granny annexe - £86,598

Garden office - £9,598

Convert a Garage - £15,598

Garage - £18,098

Build a flat roof extension - £21,598

Build a dormer loft conversion - £41,598

Concrete foundations - £5,848

Convert a bungalow loft - £28,598

Convert a basement - £32,982