Two-storey extensions in Randalstown
We design, get approval for and build two-storey extensions in Randalstown and the surrounding area. Choose the type of extension below or book a free site visit.
Randalstown at a glance
- Postcode districts
- BT41
- Area
- County Antrim, Northern Ireland
- Price region
- Northern Ireland
- Nearest towns
- Antrim (4.2 miles), Ballymena (7.9 miles), Crumlin (County Antrim) (9.6 miles), Ballyclare (12 miles)
- Distance to Belfast
- about 18.3 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 BT41 in and around Randalstown, along with neighbouring Antrim, Ballymena and Crumlin (County Antrim).
Extensions available in Randalstown
Two-storey rear extensions
Randalstown guide price from £49,500, Standard spec.
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Two-storey side extensions
Guide from £76,000 in Randalstown, including VAT.
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Two-storey wraparound extensions
Design, approvals and build for Randalstown homes. Guide from £106,000.
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Part single, part two-storey extensions
Randalstown guide price from £63,500, Standard spec.
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Extensions over a garage
From £27,500 in Randalstown. Free visit to firm it up.
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First-floor extensions
Guide from £22,000 in Randalstown, including VAT.
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Two-storey extensions for semi-detached houses
For homes in Randalstown: typical guide from £49,500.
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Two-storey extensions for detached houses
For homes in Randalstown: typical guide from £76,000.
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Kitchen extensions with bedrooms above
Randalstown guide price from £49,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
From £49,500 (plus en-suite) in Randalstown. Free visit to firm it up.
Learn moreWhich type suits your house?
Rear and side extensions suit most semi-detached and detached houses with room around them. Terraced and town-centre homes can take a two-storey extension too, with more care over neighbours, light and access.
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 Randalstown
Randalstown 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 Randalstown
Do you cover Randalstown?
Yes. We cover Randalstown (BT41) and the surrounding area, including Antrim and Ballymena. The first site visit is free.
What does a two-storey extension cost in Randalstown?
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 Randalstown do you cover?
Everywhere around it, including Antrim (4.2 miles), Ballymena (7.9 miles) and Crumlin (County Antrim) (9.6 miles), and the rest of County Antrim.