The standard can be found in article iv of the green roof bylaw municipal code chapter 492 green roofs.
Green roof bylaw city of toronto.
Every building or building addition constructed after january 30 2010 with a gross floor area of 2 000 square metres or greater shall include a green roof with a coverage of available roof space in accordance with the following chart.
The requirement ranges from 20 60 of.
Whether constructing a green roof voluntarily or as required by the green roof bylaw all green roofs in the city of toronto at a minimum must conform to the toronto green roof construction standard.
It was adopted by toronto city council in may 2009 under the authority of section 108 of the city of toronto act.
The green roof bylaw sets out a graduated green roof requirement for new development or additions that are greater than 2 000 m in gross floor area.
Toronto municipal code chapter 492 green roofs.
Toronto green roof bylaw.
In 2009 toronto was the first city in north america to adopt a bylaw to require and govern the construction of green roofs.