1031 Exchange - CRA recognition?

[Mark Anderson]

Greetings 

I'm having a hard time getting solid info on what I think should be a straight forward question. I'm a US Citizen now residing and working in Canada (Vancouver). I moved to Vancouver in 2012 and had purchased a office condo in California in 2010. I'm in the process of selling the office condo and will be taking a significant capital gain (about $300k). I would like to take advantage of the 1031 Exchange option that the IRS offers, however, I have heard that the CRA will tax me on the gain regardless of whether I take advantage of the 1031 or not. I do not ever take possession of the money from the sale of the property in a 1031 Exchange so I even wonder how the CRA knows about it, unless the sharing of the 1031 information is party of the tax treaty between the US and Canada. 
Any info from any who knows about this would be MUCH appreciated.

Mark A.