Supplemental Taxes on a Multi-Unit Property

[Stan Lee]

I have a question regarding supplemental property taxes. Let's say I have a multi-unit property that I renovated in 2018, thus I received a supplemental property tax bill due to the increased value. 

Would it be accurate to add my 2018 supplemental property tax bill to my 2018 secured property tax bill to get a rough estimate of what my 2019 total property tax bill would be?

Thank you!