Decks

Definitions

Deck

A deck is a raised uncovered platform that is attached to a dwelling. A deck will generally require a building permit, and will require protective guards if it has a walking surface greater than 24" above grade.

Porch
A porch is a covered structure that usually forms part of the entrance of a dwelling. It may be enclosed or unenclosed. Any porch requires a building permit and will require protective guards if it has a walking surface greater than 24" above grade.

Patio
A patio is an uncovered platform at grade level that is usually constructed of concrete or stone. A patio generally does not require a building permit, unless it interferes with an existing structure.

Resources

Deck Design Guide

Building Permits: A Homeowner's Guide

Ontario Building Code