What is a garage conversion?
A garage conversion turns an integral or attached garage into habitable space, such as a study, playroom, bedroom or utility. The garage door is replaced with a wall and window, the floor is raised and insulated, and the walls and roof are brought up to building regulations.
How much does a garage conversion cost in Holyhead?
In Holyhead, a garage conversion typically costs £16,500–£27,500 for a single integral garage, including VAT at 20% (standard rate). Building costs in Wales run about 8% below the UK average, and the figures for Holyhead are adjusted to reflect that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| A single integral garage | £16,500–£27,500 |
| Higher specification | £27,500–£34,500 |
Your quote will depend mainly on:
- Foundations under the old door opening
- Single or double garage
- Whether planning permission is needed
- Bathroom or kitchen
For a figure based on your own measurements, try the guide price tool, then book a free home visit for a fixed quote.
Do you need planning permission for a garage conversion in Holyhead?
Whether you need planning permission depends on your house and its location in Wales. In Wales converting a garage usually does not need planning permission unless rights have been removed by a planning condition; building regulations approval is always needed.
Building regulations in Wales are set by the Welsh Government. Approval comes from the council’s building control service or a registered building control approver, with inspections during the work and a completion certificate at the end.
If the answer is not clear-cut, we can apply for formal confirmation before you commit to the build.
What we handle
What we take care of:
- Foundation check under the garage door opening
- Electrics, heating and plastering
- Wall and ceiling insulation
- Planning check for removed permitted development rights
- New wall and window to replace the garage door
- Drawings and building control application
How long does it take?
Expect 3 to 6 weeks on site. Before that, surveys, drawings and approvals usually take 6 to 12 weeks, longer if the council asks for changes.
Building in Holyhead
Wales has many terraced valley streets, stone cottages and post-war estates, so extension designs are shaped by slopes, materials and local character.
Our Holyhead coverage includes postcode districts LL65, and we also work in nearby places such as Caernarfon, Bangor and Llandudno.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions about garage conversions in Holyhead
Can the floor be level with the house?
Yes. The garage floor is raised and insulated to match the house floor level.
Will losing the garage affect parking?
Councils sometimes object if on-street parking is under pressure. We check local parking standards.
Can a detached garage be converted?
Yes, but using it as separate living accommodation may need planning permission.
How long does a garage conversion take in Holyhead?
Typically 3 to 6 weeks on site. Design and approvals beforehand usually take 6 to 12 weeks.
How much does a garage conversion cost in Holyhead?
In Holyhead, a garage conversion typically costs £16,500–£27,500 for a single integral garage, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
Do I need planning permission for a garage conversion in Holyhead?
In Wales converting a garage usually does not need planning permission unless rights have been removed by a planning condition; building regulations approval is always needed.