Two-storey extensions in Holyhead
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Holyhead.
Holyhead at a glance
- Postcode districts
- LL64 and LL65
- Area
- Gwynedd and Anglesey, Wales
- Price region
- Wales
- Nearest towns
- Llangefni (13.7 miles), Amlwch (13.8 miles), Caernarfon (18.8 miles), Menai Bridge (19.9 miles)
- Distance to Bangor (Gwynedd and Anglesey)
- about 21.5 miles
- Approvals
- Two-storey rear: ground floor up to 4 m, first floor up to 3 m and 10.5 m from the rear boundary. Some two-storey side extensions can be permitted development.
Holyhead sits about 21.5 miles from Bangor (Gwynedd and Anglesey). Closer to home, Llangefni is 13.7 miles away and Amlwch 13.8 miles.
Extensions available in Holyhead

Two-storey rear extensions
Guide from £51,500 in Holyhead, including VAT.
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Two-storey side extensions
Our Wales guide starts at £79,000 for this type.
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Two-storey wraparound extensions
From £111,000 in Holyhead. Free visit to firm it up.
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Part single, part two-storey extensions
Our Wales guide starts at £66,000 for this type.
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Extensions over a garage
For homes in Holyhead: typical guide from £29,000.
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First-floor extensions
Guide from £23,000 in Holyhead, including VAT.
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Two-storey extensions for semi-detached houses
Holyhead guide price from £51,500, Standard spec.
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Two-storey extensions for detached houses
Our Wales guide starts at £79,000 for this type.
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Kitchen extensions with bedrooms above
From £51,500 (before kitchen units) in Holyhead. Free visit to firm it up.
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Extra bedroom and en-suite extensions
For homes in Holyhead: typical guide from £51,500 (plus en-suite).
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 Gwynedd and Anglesey
- 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
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Holyhead
Holyhead is in Wales. Two-storey rear: ground floor up to 4 m, first floor up to 3 m and 10.5 m from the rear boundary. Some two-storey side extensions can be permitted development. Householder planning application: £585. Councils normally decide householder applications within 8 weeks.
The full Wales rules explained
Questions about extensions in Holyhead
Do you cover Holyhead?
Yes. We cover Holyhead (LL64 and LL65) and the surrounding area, including Llangefni and Amlwch. The first site visit is free.
What does a two-storey extension cost in Holyhead?
Using our Wales 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 £51,500–£69,500 including VAT. An extension over a garage is about £29,000–£42,000.
Which other places near Holyhead do you cover?
Everywhere around it, including Llangefni (13.7 miles), Amlwch (13.8 miles) and Caernarfon (18.8 miles), and the rest of Gwynedd and Anglesey.