From £18,412
STEVE MULVANEY BUILDING are here to help customers who need an Extension Builder in Seaham. We offer a competitive rate to complete all your extens...
From £17,660
We provide expert advice on building defects and cost effective environmental friendly solutions throughout the North East of England. Our bu...
From £18,604
A Kendal Builders (N/E) Limited is an established and experienced local extension builder in Seaham. Please contact us for a free, no obligation qu...
From £18,332
LJP Roofing are here to help customers who need an Extension Builder in Seaham. We offer a competitive rate to complete all your extension builderi...
From £18,308
Trusted and professional extension builder in Seaham. Experienced in all extension buildering work and keeping within budget and on quote. DHB Buil...
From £18,412
Our building services company Home Grown NE has been providing professional, trustworthy building services to customers throughout the North-East f...
From £18,436
Building Craft Ltd is an established extension buildering business in Seaham. We come highly recommended and provide competitive quotes for your wo...
From £18,484
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,492
Trusted and professional extension builder in Seaham. Experienced in all extension buildering work and keeping within budget and on quote. David R...
From £18,604
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in Seaham. Please contact us for a free, no obligation quote and...

Builders charge between £17,660 (Dry Tec based in DH6) and £21,492 (David Robertson builders based in Sr4) in Seaham to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in Seaham by posting a job with HaMuch and we will send it to extension builders in Seaham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garage near Seaham | £34 | £229 |
| Garage near Peterlee | £35 | £222 |
| Garage near Sunderland | £33 | £251 |
| Garage near Washington | £33 | £251 |
| Garage near Durham | £47 | £267 |
| Garage near Chester-le-Street | £35 | £242 |
| Garage near South Tyneside | £34 | £261 |
| Garage near Jarrow | £34 | £261 |
| Garage near Hartlepool | £40 | £236 |
| Garage near South Shields | £36 | £257 |
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 - £17,674

Two storey extension - £88,262

Build a timber frame extension - £26,174

Build a swimming pool - £81,174

Single storey extension - £58,488

Side return extension - £43,462

Install an RSJ - £2,374

Outbuilding - £10,174

Build a Mansard loft conversion - £52,174

Loft conversion - £35,385

Build a kitchen extension - £42,174

Hip to gable loft conversion - £42,174

Granny annexe - £87,174

Garden office - £10,174

Convert a Garage - £16,174

Garage - £18,674

Build a flat roof extension - £22,174

Build a dormer loft conversion - £42,174

Concrete foundations - £6,424

Convert a bungalow loft - £29,174

Convert a basement - £39,462