The new proposed zoning by-law proposes to largely do away with building types as the defining feature of a zone. Instead of prescribing that density is limited to, for example, a semi-detached, or row houses, the new zoning instead sets a cap on the number of units that can be developed on a lot. The calculation can be a little tricky; it’s not obvious to anyone that a 50×100 lot is 0.046 hectares.

The new zoning sets limits in the N1 zones of 60 units per hectare, N2 of 150 units per hectare, N3 of 250 units per hectare, and N4 450 units per hectare. To calculate how that would be capped, enter your lot’s width and depth, along with the proposed zoning, below. You can choose to enter those measurements in feet or in meters. Each of the zones has sub-zones (for example, an N2 could be an N2A, N2C, etc.), but for the purpose of this calculation you only need to indicate whether it’s N1, N2, N3 or N4.

It’s important to note that the zoning by-law proposes to allow at minimum 4 units per residential lot where servicing permits, so even if the calculator returns a value of less than 4, four would still be allowed. Some lots are irregularly shaped; contact my office if you need help calculating lot size. It’s also important to note that very high upper limits may be theoretical – it may not be possible to fit as many units into the envelope as the density would allow.

This lot would be capped to 0 units.