​​​​​​​​​​​​​​​​​​​​How is this calculated?

The stormwater charge assessed for a property is based on the amount of hard surface on the property. The area of hard surface on your property differs, depending on whether it is a single family residential property or not.

Single-Family Residential

There are more than 140,000 residential properties in Brampton. To reduce the complexity and cost of managing the stormwater charge, residential properties are divided into five tiers based on the amount of hard surface on the property (not the size of the property).

Most Brampton properties fall into the middle tier with the average hard surface area of 234 m². This is one Billing Unit for properties in this tier. The other tiers receive a number of Billing Units based on how much more or less hard surface area they have relative to the middle tier.

For single-family residential properties (including detached and semi-detached homes, townhouses and rowhouses), the total hard surface area is based on the property's roof area. Each residential property's roof area are measured using aerial mapping tools, and the property is then assigned a tier based on the table below:​