Click here to read the Globe and Mail's five good suggestions for things to think about before you go ahead with buying that cabin or condo.
As an estate planner, I'm most concerned with the third area - ownership issues. If you've done some estate planning here at home, make sure that the ownership arrangement of a US property does not interfere with that. Before you buy the property, talk over possible ownership issues with your lawyer, and make sure your plans for the property after your death are part of that discussion.
The article has a good discussion of estate tax which you might find useful.