The Ontario Building Code | Clear Opening Height at Doorways
9.9.6.2. Clear opening Height at doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorways
(1) Except as provided in Sentences (2) and (3), the clear opening height of doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">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 doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorways described in Sentence (1) shall be not less than 1 980 mm.
(3) doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">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.