Examples of residential construction that requires a permit
*Note: Contact the Electrical Safety Authority (ESA) for electrical permit information. any alterations to an existing building which affect the structural design of the building including mechanical, electrical*, plumbing services (no limit on size of building), fire separations, egress (exits), fire protection/suppression systems and/or changing the use of buildings or parts of a building.'designated' structures as per the Ontario Building Code (Division A-1.3.1.1).replacement of a fire alarm panel or control unit.any form of plumbing whether in a structure or not.any structure occupying an area of 10 m 2 (108 sqft) or less that contains plumbing, including the plumbing that lead to or services that structure.not used for storage purposes ancillary to a principal building on the lot, and.attached to a building or any other structure,.greater than one storey in building height,.
