A garage conversion turns an integral or attached garage into a warm, habitable room by insulating the floor, walls and ceiling, replacing the garage door with a wall and window, and adding heating, lighting and finishes.
In Stockport, as anywhere in Greater Manchester, the price of a garage conversion is driven mainly by size, materials and access. Across the North West our guide sits at £11,500–£26,500 with VAT, but restricted parking, a narrow side passage or extra preparation can move the figure either way. That is why every price we give follows a visit to the house.
- Guide price
- £11,500–£26,500 inc VAT
- Time on site
- 2–6 weeks on site
- Postcodes
- M19, SK1, SK2, SK3 and SK4
- Planning rules
- England
- Local area
- Greater Manchester
- Survey
- Free, with a written quote
What should you budget for a garage conversion in Stockport?
The table below shows guide prices for a garage conversion in Stockport. They are based on rates in the North West, which run about 5% below the national guide, giving an overall range of £11,500–£26,500. All figures include VAT and are firmed up after a free site survey.
| Type of job | What it usually involves | Guide in Stockport |
|---|---|---|
| Integral single garage | A garage within the house footprint, with sound walls and a roof already in place. | £9,500–£17,000 |
| Attached single garage | A garage beside the house that may need roof, wall or floor upgrades. | £13,500–£24,000 |
| Double or detached garage | A larger or separate building, often with a shower room or kitchenette. | £21,000–£43,000 |
Expect these to shape the final quote:
- Condition of the floor, walls, roof and foundations
- Whether a shower room or kitchenette is included
- Heating method and ventilation for the new room
- Window and door choices and the level of finishes
What does the job include in Stockport?
- Infilling the garage door opening with insulated wall and new window
- Foundation checks under the door opening and footings where needed
- Damp-proof membrane, insulated floor and screed or raised timber floor
- Insulated walls and ceiling built to building regulations
- New internal door or opening into the house
- Plastering, skirting and decoration-ready finish
Homes in Greater Manchester
Rows of Victorian red-brick terraces fill much of Manchester, Salford and the mill towns, with stone terraces in the Pennine fringes around Oldham and Saddleworth. South Manchester has Edwardian semis and villas, Wythenshawe was built as a large interwar garden suburb, and city-centre apartments and new estates continue to grow.
Rainfall is high, especially near the Pennines, so brickwork, gutters and roof coverings take a steady soaking and freeze-thaw over winter.
In Stockport, as elsewhere in Greater Manchester, we take the building's age and construction into account before recommending anything, because both can change what is involved in a garage conversion.
Planning and building rules in Stockport
England, Wales, Scotland and Northern Ireland each handle planning a little differently. Stockport comes under England, covered below, and we raise any questions with the council before your quote is finalised.
In England, converting an attached or integral garage into a room usually needs no planning permission, unless a planning condition on your estate has removed permitted development rights (common on newer houses). Changing the garage door to a wall and window is generally fine.
Building Regulations approval is needed: foundations for the infill wall, a damp-proof course, insulation, ventilation and fire safety.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
From survey to handover
Survey and measure
It starts with a survey at the property, free of charge. We check condition, access and services, ask how you want the finished result to look, and answer any questions you have about a garage conversion.
Quote in writing
We put everything into a written, fixed-price quote: the specification, what's excluded, staged payments and the expected time on site. Take whatever time you need to decide; there's no pressure to commit.
Plan and prepare
With the quote agreed, we book the work in and handle preparation: permissions where needed, building control notifications, material orders and access arrangements for your Stockport property.
Build and hand over
Work goes ahead as scheduled and you deal with one contact throughout. When the last trade leaves, we clear and clean the site, talk you through what has been done and pass on any certificates and care instructions.
Why homeowners choose us
Frequently asked questions
Will I need building regulations approval?
A garage conversion needs building regulations approval because the space becomes a habitable room. Building control checks that the new wall in the door opening has proper foundations, that the floor has a damp-proof membrane and insulation, and that walls and ceiling meet insulation standards. Ventilation, fire safety and escape routes are also checked. In Scotland a building warrant is normally needed before work starts.
How much does a garage conversion cost?
A typical single garage conversion costs £11,500–£26,500, depending on whether the garage is integral, attached or detached and what the room is for. Integral garages usually cost least because the walls and roof are already sound. Adding a shower room, upgrading a flat roof or levelling a sloping floor adds cost. As a guide, allow roughly £550–£1,100 per square metre plus fixed costs. We confirm a fixed price after the survey.
Which postcodes in Stockport do you cover?
We cover M19, SK1, SK2 and SK3, along with the rest of Greater Manchester. If your postcode is not listed, get in touch anyway: our coverage is UK-wide, and we can usually arrange a survey wherever you live. Enter your postcode in the guide-price tool or contact form and we will confirm.
Do I need planning permission for a garage conversion?
Whether a garage conversion needs planning permission depends on the works, your home's location, whether it is listed or in a conservation area, and which UK nation you are in. In England, converting an integral or attached garage is often permitted development where changes are mostly internal, unless a planning condition has removed those rights, which is common on newer estates. We check what applies before quoting.
Do you cover Hazel Grove, Cheadle Hulme and Denton?
Yes. As well as Stockport, we cover Hazel Grove, Cheadle Hulme and Denton and the rest of Greater Manchester. Our coverage is UK-wide, so the process is the same wherever you are: a free site survey, a quote in writing that fixes the price for the agreed scope, and one point of contact while the work is planned and carried out.
Nearby towns
If your address falls within M19, SK1, SK2 and SK3, we cover it. The same goes for neighbouring Hazel Grove, Cheadle Hulme and Denton, which we include alongside Stockport when arranging surveys and quotes.