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Trusted and professional extension builder in Seaham. Experienced in all extension buildering work and keeping within budget and on quote. DHB Buil...
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...
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in Seaham. Please contact us for a free, no obligation quote and...
Building Craft Ltd is an established extension buildering business in Seaham. We come highly recommended and provide competitive quotes for your wo...
Ian
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
David Robertson
Trusted and professional extension builder in Seaham. Experienced in all extension buildering work and keeping within budget and on quote. David R...
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 £41,912
Our building services company Home Grown NE has been providing professional, trustworthy building services to customers throughout the North-East f...

In Seaham, prices for dormer loft conversions range from £41,808 (DHB Builders based in DH6) to £44,992 (David Robertson builders based in Sr4), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for.
The best way to get an accurate price is to compare quotes from extension builders in Seaham. Post your job on HaMuch now and we'll put you in touch with available extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Dormer Loft Conversion near Seaham | £35 | £235 |
| Build A Dormer Loft Conversion near Peterlee | £36 | £230 |
| Build A Dormer Loft Conversion near Sunderland | £33 | £251 |
| Build A Dormer Loft Conversion near Washington | £33 | £254 |
| Build A Dormer Loft Conversion near Durham | £47 | £267 |
| Build A Dormer Loft Conversion near Chester-le-Street | £35 | £242 |
| Build A Dormer Loft Conversion near South Tyneside | £34 | £261 |
| Build A Dormer Loft Conversion near Jarrow | £34 | £262 |
| Build A Dormer Loft Conversion near Hartlepool | £40 | £236 |
| Build A Dormer Loft Conversion 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 - £17,810

Two storey extension - £88,465

Build a timber frame extension - £26,310

Build a swimming pool - £81,310

Single storey extension - £61,200

Side return extension - £44,988

Install an RSJ - £2,510

Outbuilding - £10,310

Build a Mansard loft conversion - £52,310

Loft conversion - £36,656

Build a kitchen extension - £42,310

Hip to gable loft conversion - £42,310

Granny annexe - £87,310

Garden office - £10,310

Convert a Garage - £16,310

Garage - £18,810

Build a flat roof extension - £22,310

Build a dormer loft conversion - £42,310

Concrete foundations - £6,560

Convert a bungalow loft - £29,310

Convert a basement - £40,988