From £87,640
Trusted and professional extension builder in DL3. Experienced in all extension buildering work and keeping within budget and on quote. D & G Build...
From £87,448
Partek Site Services is an established and experienced local extension builder in DL3. Please contact us for a free, no obligation quote and compet...
From £88,312
Experienced extension builder ready to quote for your work. pidesigns is the best extension builder in DL3. No obligation free quotes and many happ...
From £87,736
Experienced extension builder ready to quote for your work. AW Building Projects North East Ltd is the best extension builder in DL3. No obligation...
From £87,820
Relax... you have found a reliable extension builder in DL3. Under Pressure is a friendly and reliable company based in DL3 who consider no job as ...
From £87,772
Need to find an Extension Builder near you for all your extension buildering work?
ANWEN CONSTRUCTION provides a local, trusted extension b...
From £87,604
Need an Extension Builder in DL3? Northern Roofline Solutions has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £87,880
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,460
Lee Construction (LDG) Ltd is a trusted extension builder serving customers in DL3 and the surrounding area. Contact us to today to get a competiti...
From £87,616
Trusted and professional extension builder in DL3. Experienced in all extension buildering work and keeping within budget and on quote. Empire Buil...

Costs range from £87,448 (Partek Site Services based in DL2) to £88,312 (Pidesigns based in DL1), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Darlington | £60 | £222 |
| Two Storey Extension near Newton Aycliffe | £39 | £227 |
| Two Storey Extension near Stockton-on-Tees | £40 | £226 |
| Two Storey Extension near Bishop Auckland | £39 | £247 |
| Two Storey Extension near Ingleby Barwick | £41 | £227 |
| Two Storey Extension near Thornaby-on-Tees | £41 | £230 |
| Two Storey Extension near Spennymoor | £38 | £248 |
| Two Storey Extension near Billingham | £43 | £240 |
| Two Storey Extension near Middlesbrough | £42 | £235 |
| Two Storey Extension near Eston | £42 | £254 |
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 - £17,319

Two storey extension - £87,729

Build a timber frame extension - £25,819

Build a swimming pool - £80,819

Single storey extension - £51,384

Side return extension - £39,466

Install an RSJ - £2,019

Outbuilding - £9,819

Build a Mansard loft conversion - £51,819

Loft conversion - £32,055

Build a kitchen extension - £41,819

Hip to gable loft conversion - £41,819

Granny annexe - £86,819

Garden office - £9,819

Convert a Garage - £15,819

Garage - £18,319

Build a flat roof extension - £21,819

Build a dormer loft conversion - £41,819

Concrete foundations - £6,069

Convert a bungalow loft - £28,819

Convert a basement - £35,466