The requirement ranges from 20 60 of.
Green roof bylaw city of toronto.
Toronto is the first city in north america to have a bylaw that requires and governs the construction of green roofs on new developments.
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 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.
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 greater than 2 000 m gross floor area as well as governing the construction standards of green roofs.
In 2009 toronto was the first city in north america to adopt a bylaw to require and govern the construction of green roofs.
Toronto municipal code chapter 492 green roofs.
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.