Two-storey extensions in Magherafelt
Need more room in Magherafelt? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Magherafelt at a glance
- Postcode districts
- BT45
- Area
- County Londonderry, Northern Ireland
- Price region
- Northern Ireland
- Nearest towns
- Maghera (6.8 miles), Cookstown (9.4 miles), Randalstown (12.2 miles), Coalisland (15.1 miles)
- Distance to Derry
- about 32.6 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 BT45 in and around Magherafelt, along with neighbouring Maghera, Cookstown and Randalstown.
Extensions available in Magherafelt

Two-storey rear extensions
Our Northern Ireland guide starts at £49,500 for this type.
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Two-storey side extensions
Our Northern Ireland guide starts at £76,000 for this type.
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Two-storey wraparound extensions
Guide from £106,000 in Magherafelt, including VAT.
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Part single, part two-storey extensions
Design, approvals and build for Magherafelt homes. Guide from £63,500.
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Extensions over a garage
Our Northern Ireland guide starts at £27,500 for this type.
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First-floor extensions
Guide from £22,000 in Magherafelt, including VAT.
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Two-storey extensions for semi-detached houses
Guide from £49,500 in Magherafelt, including VAT.
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Two-storey extensions for detached houses
Design, approvals and build for Magherafelt 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
Magherafelt guide price from £49,500 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Magherafelt we also design annexes, home offices and bedrooms over garages.
Also available in County Londonderry
- 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 Magherafelt
Magherafelt 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 Magherafelt
Do you cover Magherafelt?
Yes. We cover Magherafelt (BT45) and the surrounding area, including Maghera and Cookstown. The first site visit is free.
What does a two-storey extension cost in Magherafelt?
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 Magherafelt do you cover?
Everywhere around it, including Maghera (6.8 miles), Cookstown (9.4 miles) and Randalstown (12.2 miles), and the rest of County Londonderry.