The Ontario Building Code | Clear Opening Height at Doorways
9.9.6.2. Clear Opening Height at Doorways
(1) Except as provided in Sentences (2) and (3), the clear opening height of doorways shall be not less than 2 030 mm high at,
(a) exit doors,
(b) doors that open into or are located within a public corridor, and
(c) doors that open into or are located within another facility that provides access to exit from a suite.
(2) The clear opening height under door closers and other devices in doorways described in Sentence (1) shall be not less than 1 980 mm.
(3) Doorways serving a single dwelling unit need not comply with Sentences (1) and (2).
Note: On July 1, 2017, Sentence 9.9.6.2.(3) of Division B of the Regulation is amended by striking out "single dwelling unit" and substituting "Houseor an individual dwelling unit". (See: O. Reg. 139/17, s. 94)
In Plain Language
Doorways within a means of egress must provide a minimum clear opening height, as set out in this article, so people of typical height can pass through without ducking.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.