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 Royton?
In Royton, a garage conversion typically costs £17,000–£28,000 for a single integral garage, including VAT at 20% (standard rate). We start from a UK-wide guide and adjust it for the North West, where labour and materials are typically about 6% below 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 |
The biggest cost drivers are:
- Bathroom or kitchen
- Heating and flooring
- Foundations under the old door opening
- Integral, attached or detached
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 Royton?
Before anything is built in Royton, we confirm which approvals apply 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.
Where work involves a shared wall, building on the boundary, or digging foundations within 3 metres of a neighbour’s building and deeper than its foundations (or within 6 metres for deeper work), the Party Wall etc. Act 1996 applies and notices must be served before work starts.
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:
- Wall and ceiling insulation
- Floor raised with insulation and damp-proof membrane
- Building control completion
- New wall and window to replace the garage door
- Foundation check under the garage door opening
- Drawings and building control application
How long does it take?
The build itself usually takes 3 to 6 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Royton
Terraced streets across the North West often suit rear dormers and single-storey kitchen extensions.
We work across Royton and neighbouring areas such as Chadderton, Oldham and Middleton. Postcodes we cover in Royton include OL2.
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
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about garage conversions in Royton
Do I need planning permission for a garage conversion?
Usually not if the work is internal and the house keeps its permitted development rights. Many newer houses have planning conditions that remove those rights, in which case an application is needed.
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.
How long does a garage conversion take in Royton?
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 Royton?
In Royton, 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.
Can a detached garage be converted?
Yes, but using it as separate living accommodation may need planning permission.
