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Services
- Two-storey rear extensions
- Two-storey side extensions
- Two-storey wraparound extensions
- Part single, part two-storey extensions
- Extensions over a garage
- First-floor extensions
- Two-storey front extensions
- Two-storey extensions for semi-detached houses
- Two-storey extensions for detached houses
- Two-storey extensions for end-of-terrace houses
- Kitchen extensions with bedrooms above
- Extra bedroom and en-suite extensions
- 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
Guides
- How much does a two-storey extension cost in 2026?
- Do I need planning permission for a two-storey extension?
- Can I build a two-storey extension under permitted development in England?
- What are the rules for two-storey extensions in Wales?
- What are the rules for two-storey extensions in Scotland?
- What are the rules for two-storey extensions in Northern Ireland?
- What building regulations apply to a two-storey extension?
- Do I need a party wall agreement for a two-storey extension?
- How long does a two-storey extension take?
- Should I build a two-storey or a single-storey extension?
- Should I build a two-storey extension or convert my loft?
- Can I build an extension over my garage?
- What design rules apply to a two-storey side extension?
- Does a two-storey extension add value to my home?
- Can I live at home during a two-storey extension?
- What foundations and structure does a two-storey extension need?
Areas
- Bedfordshire
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- West Midlands
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- Clwyd
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- Gwynedd and Anglesey
- Mid Glamorgan
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- Cardiff and the Vale of Glamorgan
- Swansea and Neath Port Talbot
- Aberdeen and Aberdeenshire
- Dundee and Angus
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- Glasgow and Dunbartonshire
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- Highlands, Moray and Islands
- Perth and Kinross
- Scottish Borders
- County Antrim
- County Armagh
- County Down
- County Fermanagh
- County Londonderry
- County Tyrone
Ready to see what a second storey could do for your home?
Book a free site visit. We'll look at your house, talk through options and explain the approvals you'd need, then price the design stage in writing.