What records explain additional dwelling units at a Windsor home?

The City's page says the amendments Council approved in July 2023 allow a total of three units on any urban parcel of residential land with a single detached, semi-detached or street townhouse dwelling: all three in the main building, or two in the main building and one in a detached building. Additional units are not permitted in any other dwelling type, such as a double duplex or a multiple dwelling. In floodplain areas, units are not permitted in basements; elsewhere a basement unit may be permitted where downspouts are disconnected and a sump pump and a backflow prevention valve are installed.

One extra parking space is needed for the first added unit, except in the older core areas on the City's map, and none for a second. On a property on the Municipal Heritage Register or in a heritage area, the exterior visible from the street can't be altered to add a unit. The page says a building permit is required for any additional dwelling unit and that units created before 20 November 2018 are not grandfathered, so a basement apartment without a permit is not made lawful by the zone.

• Additional dwelling units: the City's page: three units, basements in floodplain areas, parking, heritage and permits

Extra units allowed is in the free check as a summary of the City's rule, from our hand-kept table of city rules, and the full report reads the lot's zone where the City's zoning map is open data we can use; where it isn't, the report's line says where the City publishes it. Neither is confirmation that a particular unit holds a permit or may be occupied.

Free check: pick “Extra units allowed” See the sample report