Two-storey extensions in Lisburn
Need more room in Lisburn? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Lisburn at a glance
- Postcode districts
- BT10, BT17, BT27 and BT28
- Area
- County Antrim, Northern Ireland
- Price region
- Northern Ireland
- Nearest towns
- Carryduff (6 miles), Belfast (6.7 miles), Castlereagh (7 miles), Moira (8.3 miles)
- Distance to Belfast
- about 6.7 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.
Around Lisburn we also work in Carryduff, Belfast and Castlereagh, and across the rest of County Antrim. Postcode districts in and near Lisburn: BT10, BT17, BT27 and BT28.
Extensions available in Lisburn
Two-storey rear extensions
For homes in Lisburn: typical guide from £49,500.
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Two-storey side extensions
Design, approvals and build for Lisburn homes. Guide from £76,000.
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Two-storey wraparound extensions
Lisburn guide price from £106,000, Standard spec.
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Part single, part two-storey extensions
Design, approvals and build for Lisburn homes. Guide from £63,500.
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Extensions over a garage
Lisburn guide price from £27,500, Standard spec.
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First-floor extensions
From £22,000 in Lisburn. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Lisburn homes. Guide from £49,500.
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Two-storey extensions for detached houses
Lisburn guide price from £76,000, Standard spec.
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Kitchen extensions with bedrooms above
Lisburn guide price from £49,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
Design, approvals and build for Lisburn homes. Guide from £49,500 (plus en-suite).
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Lisburn, with a rough idea of the approval route and cost for each.
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 Lisburn
Lisburn 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 Lisburn
Do you cover Lisburn?
Yes. We cover Lisburn (BT10, BT17, BT27 and BT28) and the surrounding area, including Carryduff and Belfast. The first site visit is free.
What does a two-storey extension cost in Lisburn?
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 Lisburn do you cover?
Everywhere around it, including Carryduff (6 miles), Belfast (6.7 miles) and Castlereagh (7 miles), and the rest of County Antrim.