From £12,992
Trusted and professional extension builder in Castletown. Experienced in all extension buildering work and keeping within budget and on quote. Davi...
From £9,936
Building Craft Ltd is an established extension buildering business in Castletown. We come highly recommended and provide competitive quotes for you...
From £9,984
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £9,912
Our building services company Home Grown NE has been providing professional, trustworthy building services to customers throughout the North-East f...
From £10,880
Established 1983 . For more info visit web site please . Worked in industry for over 40 years.
From £9,600
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £9,912
STEVE MULVANEY BUILDING are here to help customers who need an Extension Builder in Castletown. We offer a competitive rate to complete all your ex...
From £9,848
Skyline Loft Conversions (NE) Ltd is an established and experienced local extension builder in Castletown. Please contact us for a free, no obligat...
From £9,784
Relax... you have found a reliable extension builder in Castletown. ORILLA CONSTRUCTION SOLUTIONS is a friendly and reliable company based in Castl...
From £9,040
Member since July 2020
I have over 40 years experience in the field of construction. Thank you and I hope I will be of service to you.

Outbuilding costs in Castletown range from the cheapest of £9,040 (OCC Construction based in NE10) to the dearest of £12,992 (David Robertson builders based in Sr4), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in Castletown by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near South Tyneside | £34 | £261 |
| Outbuilding near Sunderland | £33 | £251 |
| Outbuilding near Jarrow | £34 | £261 |
| Outbuilding near Washington | £33 | £251 |
| Outbuilding near South Shields | £36 | £257 |
| Outbuilding near Hebburn | £34 | £244 |
| Outbuilding near Wallsend | £34 | £242 |
| Outbuilding near Tynemouth | £36 | £257 |
| Outbuilding near Seaham | £34 | £229 |
| Outbuilding near North Tyneside | £35 | £253 |
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 - £17,689

Two storey extension - £88,283

Build a timber frame extension - £26,189

Build a swimming pool - £81,189

Single storey extension - £58,776

Side return extension - £43,624

Install an RSJ - £2,389

Outbuilding - £10,189

Build a Mansard loft conversion - £52,189

Loft conversion - £35,520

Build a kitchen extension - £42,189

Hip to gable loft conversion - £42,189

Granny annexe - £87,189

Garden office - £10,189

Convert a Garage - £16,189

Garage - £18,689

Build a flat roof extension - £22,189

Build a dormer loft conversion - £42,189

Concrete foundations - £6,439

Convert a bungalow loft - £29,189

Convert a basement - £39,624