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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...
"Build a swimming pool" - BT4, job posted 21/09/26
SM Plumbing & Heating
Relax... you have found a reliable extension builder in Sydenham. SM Plumbing & Heating is a friendly and reliable company based in Sydenham who co...
"Single storey extension" - BT11, job posted 13/09/26
£24/hr
£167/day
Belfast Loft Company
Trusted and professional extension builder in Sydenham. Experienced in all extension buildering work and keeping within budget and on quote. Belfas...
"Build a dormer loft conversion" - BT11, job posted 02/09/26
£24/hr
£162/day
Ballantine building solutions
Ballantine building solutions is an established extension buildering business in Sydenham. We come highly recommended and provide competitive quote...
"Single storey extension" - BT14, job posted 28/08/26
"Loft conversion" - BELFAST, job posted 28/06/26
£25/hr
£173/day
Designco Ltd
Designco Ltd is an established extension buildering business in Sydenham. We come highly recommended and provide competitive quotes for your work.<...
"New bathroom" - BT12, job posted 25/04/26
£21/hr
£147/day
Extended living by Gilbert-Ash
Trusted and professional extension builder in Sydenham. Experienced in all extension buildering work and keeping within budget and on quote. Extend...
"Loft conversion" - BT8, job posted 24/04/26
£21/hr
£147/day
Glenn M Floyd Building & Joinery Contracts
Glenn M Floyd Building & Joinery Contracts is an established and experienced local extension builder in Sydenham. Please contact us for a free, no ...
"RSJ installation" - BELFAST, job posted 23/02/26
£23/hr
£158/day
DGA
Trusted and professional extension builder in Sydenham. Experienced in all extension buildering work and keeping within budget and on quote. DGA ha...
"Single storey extension" - BELFAST, job posted 21/02/26
£25/hr
£172/day
LM Design & Build
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Single storey extension" - BELFAST, job posted 03/02/26
Compare Sydenham extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Belfast | £23 | £161 |
| Extension Builders near Holywood | £23 | £159 |
| Extension Builders near Carryduff | £23 | £158 |
| Extension Builders near Comber | £22 | £160 |
| Extension Builders near Greenisland | £23 | £153 |
| Extension Builders near Ballygowan | £24 | £183 |
| Extension Builders near Bangor | £24 | £183 |
| Extension Builders near Bangor | £24 | £183 |
| Extension Builders near Carrickfergus | £23 | £158 |
| Extension Builders near Lisburn | £24 | £164 |
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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