Two-storey extensions in Newcastle
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Newcastle.
Newcastle at a glance
- Postcode districts
- BT31 and BT33
- Area
- County Down, Northern Ireland
- Price region
- Northern Ireland
- Nearest towns
- Downpatrick (10.4 miles), Kilkeel (11.7 miles), Ballynahinch (12.7 miles), Warrenpoint (16.9 miles)
- Distance to Bangor (County Down)
- about 31.9 miles
- Approvals
- Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Most others need planning permission.
We cover postcode districts BT31 and BT33 in and around Newcastle, along with neighbouring Downpatrick, Kilkeel and Ballynahinch.
Extensions available in Newcastle
Two-storey rear extensions
Newcastle guide price from £49,500, Standard spec.
Learn more
Two-storey side extensions
Design, approvals and build for Newcastle homes. Guide from £76,000.
Learn more
Two-storey wraparound extensions
Newcastle guide price from £106,000, Standard spec.
Learn more
Part single, part two-storey extensions
Our Northern Ireland guide starts at £63,500 for this type.
Learn more
Extensions over a garage
From £27,500 in Newcastle. Free visit to firm it up.
Learn more
First-floor extensions
Our Northern Ireland guide starts at £22,000 for this type.
Learn more
Two-storey extensions for semi-detached houses
Our Northern Ireland guide starts at £49,500 for this type.
Learn more
Two-storey extensions for detached houses
For homes in Newcastle: typical guide from £76,000.
Learn more
Kitchen extensions with bedrooms above
Guide from £49,500 (before kitchen units) in Newcastle, including VAT.
Learn more
Extra bedroom and en-suite extensions
Our Northern Ireland guide starts at £49,500 (plus en-suite) for this type.
Learn moreWhich type suits your house?
Rear, side, wraparound or over the garage: each adds space in a different way. For most houses in County Down, one or two of these will clearly suit the plot better than the rest, and we'll tell you which.
Also available in County Down
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Design and build two-storey extensions
Rules for Newcastle
Newcastle is in Northern Ireland. Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Most others need planning permission. Planning application for works to a house: £347. Councils aim to decide local applications within an average of 15 weeks; many take longer.
The full Northern Ireland rules explained
Questions about extensions in Newcastle
Do you cover Newcastle?
Yes. We cover Newcastle (BT31 and BT33) and the surrounding area, including Downpatrick and Kilkeel. The first site visit is free.
What does a two-storey extension cost in Newcastle?
Using our Northern Ireland guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £49,500–£66,500 including VAT. An extension over a garage is about £27,500–£40,500.
Which other places near Newcastle do you cover?
Everywhere around it, including Downpatrick (10.4 miles), Kilkeel (11.7 miles) and Ballynahinch (12.7 miles), and the rest of County Down.