Requirements to meet city code for an SDU
1. Does the ceiling height meet code, especially within the path of egress
2. Natural light calculation, based on the square footage of the living space
3. Fire & soundproofing the SDU from the main unit
4. Adding egress windows
A basement second unit is permitted to have a finished ceiling height of 1.95 m
(6’ 4¾”) over the entire required floor area, including,duct work, and the route inside the unit leading to the exit.
A fire separation can be a floor, wall, door with a self-closing device, or a combination of those things. It can be built using typical building materials such as lumber and drywall.
Lighting requirements for living and dining rooms are greater, so one must consider positioning of these spaces where you can provide adequate natural lighting through existing, enlarged, or new windows.
Egress (emergency escape) You need at least 1 egress window in your basement suite, preferably in the opposite end of where the entrance is for maximum safety.