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Trusted and professional extension builder in Thornaby-on-tees. Experienced in all extension buildering work and keeping within budget and on quote...
Relax... you have found a reliable extension builder in Thornaby-on-tees. Under Pressure is a friendly and reliable company based in Thornaby-on-te...
From £21,936
Design Consultancy & Construction Services Ltd are here to help customers who need an Extension Builder in Thornaby-on-tees. We offer a competitive...
From £21,976
Need an Extension Builder in Thornaby-on-tees? M&K BEDROOM DESIGNS has been helping local clients (20 mile radius) with their extension buildering ...

A flat roof extension ranges from the cheapest of £21,744 (Empire Building Contracts based in TS18) to the dearest of £21,976 (M&K BEDROOM DESIGNS based in TS6), 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 Thornaby-on-tees by posting a job with HaMuch. We'll send it to extension builders in Thornaby-on-tees.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Thornaby-on-Tees | £42 | £231 |
| Build A Flat Roof Extension near Ingleby Barwick | £41 | £228 |
| Build A Flat Roof Extension near Stockton-on-Tees | £41 | £228 |
| Build A Flat Roof Extension near Middlesbrough | £43 | £236 |
| Build A Flat Roof Extension near Billingham | £44 | £242 |
| Build A Flat Roof Extension near Eston | £42 | £241 |
| Build A Flat Roof Extension near Redcar & Cleveland | £43 | £254 |
| Build A Flat Roof Extension near Redcar | £42 | £240 |
| Build A Flat Roof Extension near Darlington | £60 | £222 |
| Build A Flat Roof Extension near Hartlepool | £40 | £236 |
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 - £17,384

Two storey extension - £87,826

Build a timber frame extension - £25,884

Build a swimming pool - £80,884

Single storey extension - £52,680

Side return extension - £40,195

Install an RSJ - £2,084

Outbuilding - £9,884

Build a Mansard loft conversion - £51,884

Loft conversion - £32,663

Build a kitchen extension - £41,884

Hip to gable loft conversion - £41,884

Granny annexe - £86,884

Garden office - £9,884

Convert a Garage - £15,884

Garage - £18,384

Build a flat roof extension - £21,884

Build a dormer loft conversion - £41,884

Concrete foundations - £6,134

Convert a bungalow loft - £28,884

Convert a basement - £36,195