Trusted and professional extension builder in TS18. Experienced in all extension buildering work and keeping within budget and on quote. Empire Bui...
From £33,150
Design Consultancy & Construction Services Ltd are here to help customers who need an Extension Builder in TS18. We offer a competitive rate to com...

Comparing extension builders estimates for Loft conversion gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost of a loft conversion in TS18 by posting your job to extension builders in TS18.
"Loft conversion" - STOCKTON-ON-TEES, job posted 10/05/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Loft Conversion near Stockton-on-Tees | £41 | £228 |
| Loft Conversion near Thornaby-on-Tees | £42 | £231 |
| Loft Conversion near Ingleby Barwick | £41 | £228 |
| Loft Conversion near Billingham | £44 | £242 |
| Loft Conversion near Middlesbrough | £43 | £236 |
| Loft Conversion near Eston | £42 | £241 |
| Loft Conversion near Darlington | £60 | £222 |
| Loft Conversion near Redcar & Cleveland | £43 | £254 |
| Loft Conversion near Hartlepool | £40 | £236 |
| Loft Conversion near Redcar | £42 | £240 |
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 - £17,340

Two storey extension - £87,760

Build a timber frame extension - £25,840

Build a swimming pool - £80,840

Single storey extension - £51,800

Side return extension - £39,700

Install an RSJ - £2,040

Outbuilding - £9,840

Build a Mansard loft conversion - £51,840

Loft conversion - £32,250

Build a kitchen extension - £41,840

Hip to gable loft conversion - £41,840

Granny annexe - £86,840

Garden office - £9,840

Convert a Garage - £15,840

Garage - £18,340

Build a flat roof extension - £21,840

Build a dormer loft conversion - £41,840

Concrete foundations - £6,090

Convert a bungalow loft - £28,840

Convert a basement - £35,700