Two-storey extensions in Downpatrick
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Downpatrick.
Downpatrick at a glance
- Postcode districts
- BT30
- Area
- County Down, Northern Ireland
- Price region
- Northern Ireland
- Nearest towns
- Ballynahinch (8.9 miles), Newcastle (10.4 miles), Carryduff (14.8 miles), Comber (15.3 miles)
- Distance to Bangor (County Down)
- about 23.1 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 district BT30 in and around Downpatrick, along with neighbouring Ballynahinch, Newcastle and Carryduff.
Extensions available in Downpatrick

Two-storey rear extensions
Our Northern Ireland guide starts at £49,500 for this type.
Learn more
Two-storey side extensions
From £76,000 in Downpatrick. Free visit to firm it up.
Learn more
Two-storey wraparound extensions
Guide from £106,000 in Downpatrick, including VAT.
Learn more
Part single, part two-storey extensions
Downpatrick guide price from £63,500, Standard spec.
Learn more
Extensions over a garage
From £27,500 in Downpatrick. 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
Downpatrick guide price from £49,500, Standard spec.
Learn more
Two-storey extensions for detached houses
From £76,000 in Downpatrick. Free visit to firm it up.
Learn more
Kitchen extensions with bedrooms above
From £49,500 (before kitchen units) in Downpatrick. Free visit to firm it up.
Learn more
Extra bedroom and en-suite extensions
Design, approvals and build for Downpatrick homes. Guide from £49,500 (plus en-suite).
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 Downpatrick
Downpatrick 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 Downpatrick
Do you cover Downpatrick?
Yes. We cover Downpatrick (BT30) and the surrounding area, including Ballynahinch and Newcastle. The first site visit is free.
What does a two-storey extension cost in Downpatrick?
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 Downpatrick do you cover?
Everywhere around it, including Ballynahinch (8.9 miles), Newcastle (10.4 miles) and Carryduff (14.8 miles), and the rest of County Down.