Toronto By-law 629, s. (g) — Chapter 629 Property Standards

In a stairway, a window for which the distance measured vertically between the bottom of the window and a line drawn through the outside edges of the stair nosings is less than 900 millimetres, or a window that extends to less than 1,070 millimetres above the landing, shall:

• [1] Be protected by a guard that is:
• [a] Located approximately 900 millimetres above a line drawn through the outside edges of the stair nosing;
• or [b] Not less than 1,070 millimetres high measured to the top of the guard from the surface of the landing;
• or 629-21 April 30, 2025 [2] Be fixed in position and designed to resist the lateral design loads specified for guards and walls in accordance with Subsection D(5).