Important note: Problems caused by grade changes on neighbouring properties are generally considered to be a private civil matter.
The City of Toronto does not investigate grade (elevation) differences between private properties. Grade changes are only reviewed when they are part of a building permit application for an infill housing project.
Proper drainage is essential for protecting homes, neighbouring properties, and City infrastructure. Under Toronto’s Property Standards, all property owners must manage water on their site responsibly.
Owners must make sure that catch basins, storm drains, ditches, and swales on their property are well maintained and free of blockages. These features help move water safely away from structures and prevent flooding.
Roof water, sump pump discharge, and water emptied from pools cannot be directed onto:
All buildings that require eavestroughs or gutters under the Building Code must safely collect roof water, be connected to a downspout and must discharge water in the following manner:
If you have questions about drainage or property standards, or need to report a concern, contact 3-1-1 or Create a Service Request.
Important note: If water is directed to a neighbour's property, on purpose, it is a bylaw violation. You can submit a Property Standards complaint online at: www.toronto.ca/311 or call 311.
If there is no lengthy extension on the downpipes and the water flows there naturally, there is no violation. This may be a civil matter if damage is being caused to your property by natural flow.