Covering Bangor, Gwynedd and Anglesey
Our coverage around Bangor, Gwynedd and Anglesey (LL57) also includes Llangefni (8 miles to the west) and Caernarfon.
Homes in Gwynedd and Anglesey
Housing in Wales ranges from terraced streets in the valleys and older industrial towns to stone-built homes in rural areas and modern estates around the cities.
What does a garden annexe involve?
A garden annexe is a separate single-storey building in the grounds of a house with its own bedroom, bathroom and kitchenette, used by family members as part of the main household. Unlike a garden office, an annexe that people sleep in normally needs planning permission and full building regulations approval.
- Foundations and drainage connections
- Brick, block or timber-frame structure
- Accessible design options for older relatives
What will a garden annexe cost?
Typical ranges for garden annexes. Ground conditions, access and specification move the final figure, which we fix in writing before work starts.
| Garden annexes | Guide price incl. VAT |
|---|---|
| Standard specification | £2,400 to £2,900 per m² |
| Good specification | £2,900 to £3,400 per m² |
| High specification | £3,400 to £3,900 per m² |
How is a garden annexe approved in Bangor, Gwynedd and Anglesey?
In Wales the planning rules, including what counts as permitted development, are set by the Welsh Government, and Welsh building regulations differ in places from England’s. We check both against your house before drawings are finalised, and handle party wall notices where needed.
In Wales an annexe with sleeping accommodation needs planning permission, usually with a condition tying it to the main house.
What should Bangor, Gwynedd and Anglesey homeowners check first?
- Drainage may need a pump if the garden falls away from the sewer.
- Council tax treatment depends on who lives there; check with your council.
What are the steps?
- Send us the details. Give us a postcode, a rough idea of size and some photos, by phone, form or the guide price tool.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Price and paperwork. The design is priced line by line, and we submit the planning and building control applications.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
Questions about a garden annexe in Bangor, Gwynedd and Anglesey
Do I need planning permission for a garden annexe?
Usually yes, because people will sleep in it. Outbuilding permitted development does not cover living accommodation.
How long does an annexe take to build?
About 14 to 24 weeks on site after approvals.
Do you work in Bangor, Gwynedd and Anglesey?
Yes. Bangor, Gwynedd and Anglesey is within our coverage for garden annexes, along with nearby Llangefni and Caernarfon.
Garden annexes near Bangor, Gwynedd and Anglesey
- Garden annexes in Llangefni
- Garden annexes in Caernarfon
- Garden annexes in Colwyn Bay
- Garden annexes in Holyhead
Learn more about garden annexes, or see every project we cover in Bangor.