A city that was built before the car
Much of Bath has nowhere to put one. The 2020 appraisal for Bear Flat and Oldfield Park says most of the houses in Poets Corner are terraced with no off-street parking at all. Where the older suburbs do have garages, they are often in blocks set apart from the houses. The same appraisal lists the garage blocks on Bruton Avenue, Chaucer Road and Upper Oldfield Park among the features that spoil the streets.
So a garage of your own is worth more in Bath than it looks. If you have one, the house is far more likely to be on a twentieth-century estate than in a Georgian or Victorian street. Before you give it up, think about where the car will live, and about your permit.
Then there are the permit terms, which set a test. In residents' zones brought in after 2019, any off-street space at the property cuts the number of permits you can buy. A garage counts if it was built for a car and measures at least 5 metres long and 2.5 metres wide inside, wall to wall. The terms don't say how a garage that has already been converted is treated, so ask the parking team before the builder starts, not after.
Choosing what the garage becomes
Each option below has a full guide. This is how they tend to fit Bath houses.
Integral garage. Expect it on a later house, not a Georgian or Victorian one. On a newer development, look up the decision notice for your house on the council's planning register, in case a condition removed the right to convert.
Home office. A good use for a garage that's too tight for a modern car anyway. The drive stays for parking.
Utility or playroom. Converting only the back half and keeping a store at the front keeps the garage door, so the street view doesn't change.
Single garage. One room, and the work is mostly at the door end. On a sloping plot the garage floor can sit well below the hall, so the floor build-up needs drawing early.
Read our full guide: Single Garage Conversion: What Is Involved and What to Budget For →
Bedroom. It has to work as a proper habitable room, including a way out in a fire. Near the Avon, check the flood map before anyone sleeps downstairs.
Detached garage. More likely on bigger plots. The Planning Portal says a garage kept in household use as a workshop typically needs no permission. Turning it into somewhere a person lives independently is a change of use and needs a planning application.
Double garage. Usually beside a detached house. Converting one bay and keeping the other for the car is the sensible way to protect your parking.
Gym or studio. On a semi the garage often shares a wall with next door, so a music room needs real acoustic work.
Planning and building control. Internal work usually needs no planning permission, but the new front wall is an outside change, and in Bath outside changes come with extra limits. Building Regulations approval is needed whenever the garage becomes living space.
Cost and value. No prices here. Matching stone and a stepped floor both push the figure up. Three local quotes show by how much.
Filling the door opening on a World Heritage street
The whole city is a World Heritage Site, and under the national rules that makes it protected land. The householder right to alter a house still applies, so swapping a garage door for a wall and a window can often go ahead without an application. Two limits matter. The materials must look like the ones the house is built from. And on protected land you can't clad any part of the outside in stone, artificial stone, pebble dash, render, timber, plastic or tiles under that right.
That second rule is the one people trip over. The city-wide appraisal notes render on some of Weston's later housing, and rendering the infill to match feels like the obvious finish. On the strict wording it isn't covered, so talk to the planners or apply for a lawful development certificate before you order the render. In Bath stone, the infill should be laid to match the existing coursing, not just any stone.
A listed house needs listed building consent for the change whatever the materials, and the Planning Portal says permitted development rights for garage conversions have sometimes been removed, so check with the council if you live on a newer development. Your planning history settles it.
What B&NES building control checks
B&NES Building Control says plainly that turning an existing garage into living accommodation needs approval. It points people to its online building notice service for these jobs.
Expect the surveyor to look at the old door opening first. The Planning Portal says a new foundation may be needed for the infill wall, and sometimes there's no proper foundation under the old door at all. Then the floor, which needs a damp membrane joined to the damp course in the walls, then insulation. The British Geological Survey says radon protection is required in conversions in parts of the district, so ask building control whether your address is one of them.
Where these facts come from
- On-street parking permits: offsetting permit entitlement (B&NES)
- Bear Flat and Oldfield Park character appraisal (2020)
- Town and Country Planning (General Permitted Development) (England) Order 2015, Schedule 2
- Garage conversion: planning permission (Planning Portal)
- Is Building Regulations approval needed for a garage conversion? (Planning Portal)
- Converting a garage into a workshop (Planning Portal)
- Converting a detached garage into self-contained living space (Planning Portal)
- Conversions (B&NES Building Control)
- Check if you need planning permission (B&NES)
- Level 2 Strategic Flood Risk Assessment for Bath (2009)
- Geology of the Bath area: geological hazards (BGS)
How FirQuote works in Bath: We connect you with local specialists who visit your property before giving you a price. You get up to 3 written quotes — no call centres, no estimates from photos, no obligation to accept any quote.
Questions people in Bath ask
Will converting our garage change how many parking permits we can buy?
Possibly. In zones brought in after 2019, a garage at least 5 metres by 2.5 metres inside counts as off-street parking and reduces your permit allowance. The council's terms don't say what happens once it's a room, so get an answer from the parking team in writing before you start.
Our postwar house in Weston is rendered. Can we render the new wall where the garage door was?
Don't assume so. On protected land, which covers all of Bath, the national rules leave render cladding out of the householder right. Ask the planners or apply for a lawful development certificate first.
We're in Lower Weston near the river. Is a downstairs bedroom a bad idea?
Check first. Bath's flood study names Lower Weston, Locksbrook, Kingsmead and Grosvenor among the areas where homes are at risk from the river. Look up your address on the Environment Agency's flood map, and if it's in a flood zone, a study or playroom is a safer use.
The garage behind our Victorian villa has its own lane access. Can my mother live in it?
Only with planning permission. Once a converted garage works as a home on its own, the Planning Portal treats it as a change of use. As a workshop or office for the household it usually needs none.