What records explain duplexes, triplexes and fourplexes at a Kitchener home?

The City's page says up to four dwelling units may be possible on lots that permit a single detached, semi-detached or street townhouse dwelling, in combinations such as three units in the main building and one in a backyard home, or two in the main building and a two-unit backyard home. It also says that on some lots only one or two units may be possible because of minimum lot width, servicing restrictions or natural hazards. Where an additional unit's door doesn't face a street, a walkway 1.1 metres wide with 2.1 metres of overhead clearance must lead to it.

Kitchener has two zoning by-laws in force: about 80% of properties are under By-law 2019-051 and about 20% remain under the older By-law 85-1, whose rules differ, so the City says to confirm which one applies; its online zoning map shows the zone and the by-law for an address. A permitted use does not make an existing unit lawful, and a new unit needs a building permit. On a property larger than one acre, work that affects trees may need a tree conservation permit.

• Additional dwelling units: the City's page: lot types, combinations of units, walkways, parking and trees
• Zoning bylaw: the City's page on its two zoning by-laws and the online zoning map

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