StatutoryFree to read
Skilled Trades Ontario
code_compliancehealth_safetyestimating
Affects estimating as much as compliance: the apprentice ratio is what determines whether the assumed crew mix is legal, and an illegal crew mix is an optimistic labour rate.
StatutoryFree to read
Home Construction Regulatory Authority and Tarion Warranty Corporation
code_compliancecontract_adminestimating
Any Ontario residential contractor moving from renovation into new build crosses this line, usually without realising it, and the licence is not something that can be obtained in the week before closing.
StatutoryPartly availableOBC 2024
Government of Ontario
building codeoccupancy classificationegressbarrier-freefire separation
StatutoryPaywalled
Electrical Safety Authority of Ontario
code_compliancespecificationplanningsite_engineering
Worth holding because the licensing and notification limbs are free, verifiable and commercially significant, even though the Code text itself is not. Treat the Code edition number as unknown until read from ESA; do not state it from memory.
De facto standardFree to read
National Research Council Canada
model building code
Cite the OBC in Ontario, not the NBC. The NBC matters for interpretation and for other provinces.