From £16,932
We have over 25 years experience in all building work and renowned for good workmanship All jobs small and large taken on
From £17,404
FJS CONTRACTS LTD are here to help customers who need an Extension Builder in Maghera. We offer a competitive rate to complete all your extension b...
From £17,516
Seamus Mcmullan building and joinery is an established extension buildering business in Maghera. We come highly recommended and provide competitive...
From £17,108
Need an Extension Builder in Maghera? SF Carpentry has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
From £17,020
Luxury Garden Studios is an established and experienced local extension builder in Maghera. Please contact us for a free, no obligation quote and c...
From £16,796
Been in business as 18 years alway put clients first and never had any combacks
From £16,996
Trusted and professional extension builder in Maghera. Experienced in all extension buildering work and keeping within budget and on quote. purdy b...
From £17,196
Relax... you have found a reliable extension builder in Maghera. JAMSE CONSTRUCTION LTD is a friendly and reliable company based in Maghera who con...

Underpinning ranges from £16,796 (Oakmore Contracts based in BT45) to £17,516 (Seamus Mcmullan building and joinery based in BT45), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in Maghera by posting a job with HaMuch and we will send it to extension builders in Maghera.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Magherafelt | £30 | £238 |
| Underpin A Building near Dungiven | £22 | £190 |
| Underpin A Building near Coleraine | £23 | £201 |
| Underpin A Building near Ballymoney | £21 | £187 |
| Underpin A Building near Coalisland | £27 | £223 |
| Underpin A Building near Londonderry | £24 | £190 |
| Underpin A Building near Crumlin | £26 | £194 |
| Underpin A Building near Dungannon | £30 | £238 |
| Underpin A Building near Strathfoyle | £24 | £190 |
| Underpin A Building near Ballyclare | £20 | £124 |
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 - £17,121

Two storey extension - £87,432

Build a timber frame extension - £25,621

Build a swimming pool - £80,621

Single storey extension - £47,420

Side return extension - £37,236

Install an RSJ - £1,821

Outbuilding - £9,621

Build a Mansard loft conversion - £51,621

Loft conversion - £30,197

Build a kitchen extension - £41,621

Hip to gable loft conversion - £41,621

Granny annexe - £86,621

Garden office - £9,621

Convert a Garage - £15,621

Garage - £18,121

Build a flat roof extension - £21,621

Build a dormer loft conversion - £41,621

Concrete foundations - £5,871

Convert a bungalow loft - £28,621

Convert a basement - £33,236