Any current year reductions, due to assessment value or class changes, are processed after the final tax notices are issued.


If the demolition of a structure has reduced the assessed value of your property, please complete and submit an application under section 357 of the Municipal Act. 


Tax class, assessment values and roll numbers are provided by the Municipal Property Assessment Corporation (MPAC). Changes cannot be made without direction from MPAC. 

Supplementary Tax Notices

Have you added value to your property with the addition/improvement of a structure?

Property assessment values in Ontario are determined by the Municipal Property Assessment Corporation (MPAC). Their current value assessment system takes into consideration additions/improvements made to a property that has increased its overall value. MPAC is prescribed by legislation to issue supplemental assessment notices which can be applicable for the current year and up to 2 years prior, prorated as required. When a supplemental assessment notice is issued, the Township is required to generate a tax notice considering the applicable tax rate and time period. Before receiving a property tax notice, you will receive notification of the change in value from MPAC.


For example: if you build a garage in 2023, you could receive the supplemental tax notice for the additional value of the garage for the years 2023, 2024 and 2025 in the year 2025.


For your own budgeting purposes, you can estimate your expected property taxes by multiplying the municipal tax rate and the assessment value. To get an idea of the assessment, you can view the value of properties you deem comparable through MPAC’s AboutMyProperty portal, through the Township’s online Property Search, or by viewing the physical assessment roll in our office.  


If you are enrolled in a Pre-Authorized Payment (PAP) program, supplementary billings will be withdrawn from your account but depending on the time of year, we may need to withdraw funds on a date outside of your regular plan date - you will be notified if this is the case.  

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