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Mid- and high-rise sites (four storeys or more) share common features. These buildings are often for residential use and include apartments or condominiums. Leasing companies or condominium associations usually operate these buildings. Many office buildings also belong to this category. Office buildings may be operated by an independent site owner, but often commercial land management groups own and operate them.
Mid- and high-rise sites (four storeys or more) share common features. These buildings are often for residential use and include apartments or condominiums. Leasing companies or condominium associations usually operate these buildings. Many office buildings also belong to this category. Office buildings may be operated by an independent site owner, but often commercial land management groups own and operate them.


[[File:High_Rise_Mid_Rise_Options.png|LID options for high-rise and mid-rise sites]]
===Parking lots===
===Parking lots===
Mid- and high-rise buildings have higher user occupancy densities than other sites and therefore require significant parking area. To conserve the site area, these parking areas are typically located underground. Mid- and high-rise buildings most commonly have flat roofs that drain internally to onsite storm sewer networks. These sites typically have common areas, but their size and function vary.
Mid- and high-rise buildings have higher user occupancy densities than other sites and therefore require significant parking area. To conserve the site area, these parking areas are typically located underground. Mid- and high-rise buildings most commonly have flat roofs that drain internally to onsite storm sewer networks. These sites typically have common areas, but their size and function vary.
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===Roof areas===
===Roof areas===
In many municipalities, the rooftops of mid- and high-rise buildings are not visible. Developing LID practices on these surfaces will provide benefits but will be more difficult to promote, since a benefit of green roofs is their aesthetic appeal. The exception is major urban centres where a significant number of high rises offer views of other buildings' roofs.
In many municipalities, the rooftops of mid- and high-rise buildings are not visible. Developing LID practices on these surfaces will provide benefits but will be more difficult to promote, since a benefit of green roofs is their aesthetic appeal. The exception is major urban centres where a significant number of high rises offer views of other buildings' roofs.
[[File:High_Rise_Mid_Rise_Options.png|LID options for high-rise and mid-rise sites]]


==Low-rise residential sites==
==Low-rise residential sites==
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