Attached or freestanding? Dundee's warrant guide treats them differently
The council's Building Standards householder guide puts it bluntly. An attached garage is never exempt from a building warrant, however small it is, and turning one into living space needs warrant approval.
A detached garage starts from a different place. Built at under 30 square metres and at least a metre from the boundary, it can go up with no warrant at all. That exemption only lasts while it stays a garage. Under the Scottish regulations, an exempt building that stops being exempt has been converted, and the same goes for any building beside a house that people will now spend time in. Fit it out as an office or a gym and it comes into the system like any other room.
Under Schedule 6, some standards bend for conversions and some don't. Structure, insulation, daylight and damp coming up through the floor are improved as far as reasonably practicable, never left worse than before. Escape from fire, ventilation and noise have to be met in full. The old slab usually takes most of the design effort. Dundee's surveyors offer a pre-warrant consultation, which is cheaper than a redesign.
Six metres from the footpath
Policy 11 of the 2019 Local Development Plan backs householder work that doesn't harm the existing level of parking at the house. The supplementary guidance behind it then gives a measurement. Garages should be set back at least 6 metres from a public footpath, or 5 metres with a roller door, so a car pulling in doesn't sit across the pavement.
After the conversion, that strip in front becomes your parking. If it holds a car clear of the footway, you have kept a space. If it doesn't, expect questions whenever a planning application is involved.
Which conversion suits which Dundee house
With almost half of Dundee's households living in flats, garages here mostly belong to semis, detached houses and the newer streets at the edge of the city. Each links to a UK-wide guide, and where it talks about England, the Scottish rules on this page win.
Integral garage. This is the one where planning turns on the front of the house. Under Class 2B, Scottish householders get a right that allows outside alterations that aren't an enlargement and stick out no more than a metre, which can cover a wall and window in place of the door. In any of the city's 17 conservation areas that right is gone.
Planning and the warrant. Keep them apart in your head. Planning asks about the outside and the parking. The building warrant asks about the room itself, and in Dundee you'll need one for any conversion of an attached garage.
Single garage. Measure the driveway before the garage. With a full 6 metres in front, the planners have far less to ask about.
Read our full guide: Single Garage Conversion: What Is Involved and What to Budget For →
Detached garage. The warrant exemption falls away once it becomes a room. Using it as a workshop or office for the household is one thing. A relative living there on their own is something else, and Class 3A doesn't cover a building that is a dwelling, so speak to the planners first.
Bedroom. Escape and ventilation are the two standards with no leeway in a Scottish conversion. Plan the window as a way out as well as a source of light.
Double garage. Converting one bay and keeping the other for a car protects the parking Policy 11 looks at. Convert both and the driveway has to do the whole job.
Home office. A garage too narrow for the car you drive now can still hold a desk. The warrant is no lighter than for a bedroom.
Utility or playroom. Leaving the garage door in place keeps the front unchanged, which helps in a conservation area. A playroom is living space, so the attached garage rule applies. Ask the duty surveyor how they treat a plain utility room.
Gym or studio. Noise is one of the standards a conversion has to meet in full, so a music room against a neighbour's wall needs proper separation designed in. A detached garage down the garden is the quieter choice.
Cost. You won't find a Dundee price list here. The slab and the frontage move the figure most, and three builders on site will show you which way it leans.
Stone walls in West Ferry and Broughty Ferry
The villa suburbs along the Tay have the strictest frontage rules. Losing the garage tempts people to open the front wall and park in the garden. In West Ferry the 2025 appraisal shuts that door. It says removing boundary walls to make parking spaces, or for any other use, will not be acceptable. Broughty Ferry's appraisal describes an area full of stone boundary walls too.
The council's policy on breaches in boundary walls, from 2010, applies across its listed buildings and conservation areas. It asks for a justification of need before a wall is opened for parking. It says front garden parking at houses in conservation areas will only be considered where it already predominates on the street, and that any new hard surface needs planning permission. Bitumen surfacing is called not appropriate, while setts, gravel or slabs may be.
Changing the garage door itself also needs planning permission there, because Class 2B stops at the conservation area boundary. With around 900 listed buildings in the city, check the listing too before you design anything.
Two quick checks before the floor is designed. Radon is one of the standards a conversion must address, so search the postcode on UKradon. And if the house sits near the Dighty Water or the Tay shore, both named in the council's flood risk study, look at SEPA's flood map before planning a bedroom at ground level.
Where these facts come from
- Dundee City Council: Building Standards householder guide (2015)
- Dundee City Council: building standards guidance notes
- Dundee City Council: Local Development Plan 2019 (Policy 11)
- Dundee City Council: Householder Development supplementary guidance
- Dundee City Council: vehicular access and pavement crossings
- Dundee City Council: Breaches in Boundary Walls policy and guidance (2010)
- Dundee City Council: West Ferry conservation area appraisal 2025
- Dundee City Council: conservation areas
- Dundee City Council: listed buildings and conservation areas
- Dundee City Council: 2022 Census profile
- Dundee City Council: LDP 2019 Strategic Flood Risk Assessment
- Town and Country Planning (General Permitted Development) (Scotland) Order 1992, Schedule 1
- Building (Scotland) Regulations 2004, Schedule 2 conversions
- Building (Scotland) Regulations 2004, Schedule 6 standards for conversions
- Health Protection Agency: Indicative Atlas of Radon in Scotland (2011)
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Questions people in Dundee ask
We're in West Ferry. Once the garage is a room, can we take out part of the front wall to park?
Very unlikely. The West Ferry appraisal says removing boundary walls for parking will not be acceptable, and the council's wider policy on boundary walls takes a similar line. Plan the conversion around the parking you already have.
Our detached garage was built without a warrant. Does turning it into a gym change that?
Yes. A small detached garage well clear of the boundary can be exempt, but making it somewhere people use as a room counts as a conversion under the Scottish regulations. You'll need a building warrant before work starts.
The drive in front of our garage is only about 4 metres long. Is that a problem?
It can be. Dundee's householder guidance wants garages set back 6 metres from a footpath, or 5 with a roller door, so a car doesn't block the pavement. If the drive is shorter, the garage may be the only off-street space you have, and that matters to the planners if an application is needed.
Can we lower the kerb and pave the front garden instead?
Possibly, outside a conservation area. The council's consent is needed before any kerb is lowered, plus a road opening permit, and planning permission may also apply. The guidance asks that a new driveway doesn't add to flooding or drainage problems in the street.