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Wales

Garden Annexes in Cardiff

Specialist garden annexes installation across Cardiff — from Cardiff to Barry. Free survey, transparent pricing, work guaranteed.

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Self-contained garden annexe with kitchenette and living area

Garden Annexes services across Cardiff

We provide complete garden annexes installation throughout Cardiff, covering everything from individual home extensions to large commercial and industrial projects. Our experience across the Wales region means we understand the local building stock, the prevailing weather conditions, and the conservation considerations that vary from area to area.

Garden annexes built to provide independent living space for family members — bathroom, kitchenette, bedroom and lounge all in one self-contained garden building.

What we offer in Cardiff

  • Free on-site survey across the whole of Cardiff, typically arranged within a week of enquiry.
  • Fully itemised, fixed-price quotation with clear scope, material specification and programme.
  • Specialist installation teams with all relevant accreditations — CSCS, CHAS, NICEIC, Part-P.
  • Compliance documentation as standard for Building Regulations sign-off where required (typically two-storey, sleeping accommodation, or buildings over 30m²).
  • 10-year workmanship guarantee backed by our manufacturer warranties.

About Cardiff

Cardiff sits within the Wales region of the UK, with a varied mix of residential, commercial and industrial building stock. From period properties in Cardiff to modern industrial units across the county, we install garden annexes to suit every brief — and we know which systems perform best in the local climate and architectural context.

Towns Covered

Garden Annexes across Cardiff

We install in every town and surrounding village across Cardiff. Click your area for local information.

Garden Annexes in CardiffGarden Annexes in PenarthGarden Annexes in CaerphillyGarden Annexes in Barry
Free Quote

Get your Cardiff quote

Whether you're in Cardiff, Penarth, or anywhere else in Cardiff, we'll arrange a free survey and provide a clear quotation.

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Coverage
All of Cardiff

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No-obligation survey across England, Scotland, Wales and Northern Ireland.

We aim to respond within one working day. Your details are never shared.

FAQs

Garden Annexes in Cardiff

Do I need planning permission for a garden annexe?
Yes, usually. A garden annexe with kitchen, bathroom and sleeping accommodation is treated as ancillary residential use, which generally requires planning permission. Renting it out (Airbnb, long let) needs a Lawful Development Certificate or change-of-use approval.
How much does a garden annexe cost in Cardiff?
Garden annexes in Cardiff typically range from £35,000 for a basic 25m² self-contained unit up to £120,000+ for larger two-bedroom builds with high-spec kitchen and bathroom. They're effectively small houses.
Are annexes subject to council tax?
Annexes used by family members are usually exempt or eligible for 50% discount under the 'family annexe' rules. Annexes let to non-family tenants are typically subject to full council tax — band depends on size and facilities.
Can elderly parents live in a garden annexe permanently?
Yes, and it's increasingly popular as part of multi-generational living. The annexe is connected to mains drainage, water and electrics; many have wheelchair-accessible thresholds, walk-in showers and step-free design. Planning officers are generally supportive of this use.
What about heating and energy bills?
We typically specify the annexe with its own electrical meter so usage is separately tracked. High-quality insulation and either electric heating or an air-source heat pump keeps annexe running costs manageable — typically £30-80/month in heating.

Garden Annexes in Cardiff — quote ready in 48 hours.

Free site survey, transparent quote, and a programme you can rely on. Speak to our team today.

📞 0800 088 6248 Get a Quote