Two-storey extensions in Jordanstown
Planning a bigger home in Jordanstown? Compare extension types and guide prices below, then book a free site visit.
Jordanstown at a glance
- Postcode districts
- BT37
- Area
- County Antrim, Northern Ireland
- Price region
- Northern Ireland
- Nearest towns
- Greenisland (1.6 miles), Newtownabbey (1.7 miles), Holywood (4.3 miles), Carrickfergus (4.4 miles)
- Distance to Belfast
- about 6.1 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 BT37 in and around Jordanstown, along with neighbouring Greenisland, Newtownabbey and Holywood.
Extensions available in Jordanstown

Two-storey rear extensions
Guide from £49,500 in Jordanstown, including VAT.
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Two-storey side extensions
Jordanstown guide price from £76,000, Standard spec.
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Two-storey wraparound extensions
Jordanstown guide price from £106,000, Standard spec.
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Part single, part two-storey extensions
Guide from £63,500 in Jordanstown, including VAT.
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Extensions over a garage
For homes in Jordanstown: typical guide from £27,500.
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First-floor extensions
Design, approvals and build for Jordanstown homes. Guide from £22,000.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Jordanstown homes. Guide from £49,500.
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Two-storey extensions for detached houses
Design, approvals and build for Jordanstown homes. Guide from £76,000.
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Kitchen extensions with bedrooms above
Our Northern Ireland guide starts at £49,500 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
From £49,500 (plus en-suite) in Jordanstown. Free visit to firm it up.
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Jordanstown we measure distances to every boundary before suggesting a type.
Also available in County Antrim
- 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 Jordanstown
Jordanstown 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 Jordanstown
Do you cover Jordanstown?
Yes. We cover Jordanstown (BT37) and the surrounding area, including Greenisland and Newtownabbey. The first site visit is free.
What does a two-storey extension cost in Jordanstown?
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 Jordanstown do you cover?
Everywhere around it, including Greenisland (1.6 miles), Newtownabbey (1.7 miles) and Holywood (4.3 miles), and the rest of County Antrim.