Bear in mind as a Canadian resident you are subject to Canadian
taxes, including capital gains
taxes on your second property. Given the state of the real estate market in the US though I doubt that's a big deal (but it might be in the future).
The assessment in a lot of jurisdictions is based on the sale price, you buy it for $100,000, the assessment value for that year becomes $100,000. This is one of the reasons so many States are having financial difficulties.
Steve.