Covering Gwynedd and Anglesey
We cover Gwynedd and Anglesey, including Bangor, Holyhead, Caernarfon and Llangefni, and the towns around them.
Homes in Gwynedd and Anglesey
Across Wales you find valley terraces, coastal towns, rural stone houses and newer estates, so access, slopes and local materials all feature in the design.
What do you get with a garage conversion?
Most integral garages already have the walls and roof; what they need is a new insulated floor, an infilled front wall with a window, and heating. We check whether your permitted development rights are intact, handle building control and finish the room ready to use.
- Planning check (some estates remove permitted development rights)
- Building control application
- Insulated floor, walls and ceiling
How much does a garage conversion cost in Gwynedd and Anglesey?
Typical ranges for garage conversions. Ground conditions, access and specification move the final figure, which we fix in writing before work starts.
| Garage conversions | Guide price incl. VAT |
|---|---|
| Single integral garage | £12,000 to £17,000 |
| Single attached garage | £12,000 to £24,000 |
| Single detached garage | £18,000 to £30,000 |
| Double garage | £25,000 to £54,000 |
Planning and building rules in Gwynedd and Anglesey
Planning decisions in Wales are made by the local council, using permitted development rules set by the Welsh Government rather than England’s. Building regulations in Wales have their own approved documents, and the Party Wall etc. Act 1996 applies to work on shared walls and boundaries.
In Wales, converting an attached garage usually does not need planning permission unless rights have been removed by condition or the building is listed.
What can change the price or programme?
- The garage floor is often lower than the house and needs raising.
- A bedroom needs an escape window or a protected route out.
What happens after I enquire?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Design and fixed price. You get drawings and a written price for the agreed specification before anything is ordered.
- Construction and completion. One site lead co-ordinates every trade through to the building control certificate.
Your questions answered
How much does a garage conversion cost?
A single integral garage usually costs about £12,000 to £17,000 including VAT. Detached and double garages cost more.
Can a garage become a bedroom?
Yes, with insulation, ventilation and an escape window or protected route out.
Do you work in Gwynedd and Anglesey?
Yes. Gwynedd and Anglesey is within our coverage for garage conversions, along with nearby Bangor and Holyhead.
Garage conversions near Gwynedd and Anglesey
- Garage conversions in Bangor
- Garage conversions in Holyhead
- Garage conversions in Caernarfon
- Garage conversions in Llangefni
- Garage conversions in Pwllheli
Learn more about garage conversions, or see every project we cover in Gwynedd and Anglesey.

