Coventry's 3m by 6m test
The city's parking standards sit in Appendix 5 of the Local Plan. Note 2 to its main table is blunt. A garage on a housing development only counts towards the parking if it measures at least 3m by 6m inside. Plenty of older single garages fall short.
The council admits as much. Paragraph 1.12 of the same appendix says a high proportion of garages counted as parking are frequently used for general storage instead. If yours holds the bikes and a freezer, a conversion mostly turns storage into a room.
Location matters too. Four in ten Coventry households live in a terrace, and Victorian streets such as Chapelfields and Earlsdon were built decades before anyone owned a car. Most garages are on later houses, including the newer estates on the edge of the city. On those newer estates, read the original planning permission before anything else. The Planning Portal warns that rights to convert a garage are sometimes removed, particularly on new housing developments. Ask the council for the original decision notice and look for a condition naming the garage.
How each conversion suits a Coventry house
Ordered for the houses that actually have garages here. Every type has a longer guide behind it.
Integral garage. Expect these on estate houses, not the old terraces. Check the decision notice for a condition first, because the Planning Portal names new developments as the place rights tend to go.
Single garage. Measure it. Under 3m by 6m inside, the Local Plan never treated it as a parking space, so you lose storage rather than a bay in the council's eyes.
Read our full guide: Single Garage Conversion: What Is Involved and What to Budget For →
Home office. A sensible use for a garage too short for a modern car. It is still a habitable room, so the council's building control team will check the floor, walls, ventilation and windows.
Utility or playroom. Converting the back half and keeping a shortened store at the front leaves the door in place. That keeps the street view unchanged, which helps in a conservation area.
Bedroom. Fire escape and daylight come into play once someone sleeps there. Look at the flood map first if the house sits low beside the Sherbourne, the Sowe or Canley Brook.
Double garage. Only about one Coventry household in nine lives in a detached house, so these are less usual here. Converting one bay and keeping the other keeps a car off the road.
Detached garage. Kept as a hobby room or workshop used by the household, the Planning Portal says permission is typically not needed. The council's 2023 guide also says garden buildings must not become living accommodation, so a separate flat for a relative is a planning matter.
Gym or studio. Weights need a floor that won't crack, so the new screed matters. If it shares a wall with next door's garage, sort out sound before the drums move in.
The two approvals. Inside work that doesn't enlarge the house usually needs no planning application. Building regulations approval nearly always applies, from the city council's building control or an approved inspector.
Cost. We don't publish prices. A new footing under the old door, the floor build-up and any work to the drive are what move quotes apart, so ask each firm to list what it has allowed.
The drive, the kerb and the front wall
Lose the garage and the car goes on the front, if there's room. The city's dropped kerb page wants hardstanding at least 4m deep by 2.4m wide. If the access leads to a garage it asks for 5m, so the door can open. The 2023 Householder Design Guide sets 5m as the minimum depth for frontage parking.
A front drive over five square metres must be porous, or drain to a lawn or border inside your boundary. If it doesn't, you need planning permission. A new crossing onto a classified road always needs permission. And the dropped kerb page's list of conditions leaves out listed buildings and homes in a conservation area, so in Earlsdon, Brownshill Green or the other seventeen, speak to planning before you book the kerb.
Bricking up the garage door changes the front of the house. Outside a conservation area that is usually a building regulations job and nothing more. Earlsdon and Brownshill Green carry Article 4 directions as well, so ask the conservation team whether the new wall and window are caught.
Under the slab
Few garage floors were laid to be lived on. The Planning Portal expects a new damp-proof membrane over the old concrete with insulation above it, then a screed of about 75mm with mesh in it, often raised to meet the house floor. The in-fill wall where the door was usually needs a footing of its own. On the Mercia Mudstone that runs under parts of the city, the British Geological Survey notes gypsum can raise sulphate levels enough to attack ordinary concrete, so let the engineer pick the mix.
Radon is the other thing to check. LABC says conversions in radon-affected areas may need basic or full protection depending on the level. Put your postcode into the UKradon map and ask building control which applies.
Where these facts come from
- Coventry City Council: Local Plan Appendix 5, car and cycle parking standards
- Coventry City Council: vehicle access and dropped kerbs
- Coventry City Council: Householder Design Guide SPD (2023)
- Coventry City Council: list of conservation areas
- Coventry City Council: Article 4 directions
- Coventry City Council: building control
- Census 2021 accommodation type, Coventry
- British Geological Survey: geology of the Coventry area (WA/89/29)
- Coventry City Council: summary of flood risk (October 2022)
- Planning Portal: garage conversion planning permission
- Planning Portal: building regulations for garage conversions
- Planning Portal: garage conversion flooring
- Planning Portal: converting a garage into a workshop
- LABC: do I need to consider radon?
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Questions people in Coventry ask
Our garage is only about 2.5m wide. Does Coventry still count it as a parking space?
Not under the Local Plan's parking appendix, which says a garage on a housing development must be at least 3m by 6m inside to count. That matters mostly where an application is needed and officers look at where the car will go.
We want to park on the front once the garage becomes a room. What size drive do we need?
The council's dropped kerb page asks for hardstanding at least 4m deep and 2.4m wide, and a porous surface or drainage into the garden once it passes five square metres. The householder guide prefers 5m of depth.
We live in Earlsdon. Can the garage door become a window?
Ask first. Earlsdon has been a conservation area since November 2022 and has an Article 4 direction, so talk to the council's conservation team before ordering bricks or a frame.
Will the new floor need radon protection?
It depends on your exact address. Check the UKradon map, then ask building control. LABC says conversions in radon-affected areas may need basic or full protection.