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 Ashton-under-Lyne?
In Ashton-under-Lyne, a garage conversion typically costs £17,000–£28,000 for a single integral garage, including VAT at 20% (standard rate). That range is adjusted for the North West, where domestic building work typically costs around 6% below the national average. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| A single integral garage | £17,000–£28,000 |
| Higher specification | £28,000–£35,000 |
Your quote will depend mainly on:
- Bathroom or kitchen
- Foundations under the old door opening
- Single or double garage
- Whether planning permission is needed
Your exact price depends on the survey and drawings. The guide price tool gives a quick range in the meantime.
Do you need planning permission for a garage conversion in Ashton-under-Lyne?
Here is how the rules work for a garage conversion in England. In England converting an integral or attached garage usually does not need planning permission, unless a condition on the house removed permitted development rights (common on estates built in recent decades) or the house is listed. Building regulations approval is always needed.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
Our first visit includes a check of your planning history, so you know the route before paying for drawings.
What we handle
From survey to sign-off, the job normally involves:
- Drawings and building control application
- Planning check for removed permitted development rights
- New wall and window to replace the garage door
- Building control completion
- Wall and ceiling insulation
- Electrics, heating and plastering
How long does it take?
Expect 3 to 6 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Ashton-under-Lyne
The North West has many brick terraces and inter-war semis, where kitchen extensions and dormer loft conversions add space without moving.
Our Ashton-under-Lyne coverage includes postcode districts OL7, and we also work in nearby places such as Dukinfield, Stalybridge and Droylsden.
How it works
- 01
Free visit
We look at the property, talk through what you want and measure up. There is no charge and no obligation.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions about garage conversions in Ashton-under-Lyne
Do I need building regulations approval?
Yes. Converting a garage to a habitable room needs building control approval for insulation, ventilation, fire safety and the new wall.
Can the floor be level with the house?
Yes. The garage floor is raised and insulated to match the house floor level.
How much does a garage conversion cost in Ashton-under-Lyne?
In Ashton-under-Lyne, a garage conversion typically costs £17,000–£28,000 for a single integral garage, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
Do you build garage conversions in Ashton-under-Lyne?
Yes. We build garage conversions across Ashton-under-Lyne, including postcodes OL7. Every project starts with a free home visit.
How long does it take?
Typically 3 to 6 weeks on site.