Real Estate isn't my primary business.

I currently have one rental home in addition to my primary residence. 

Has anyone out there done this. i'm interested in doing it with my primary residence that's pretty much already that way.

I have a rental it is 4/2 was my primary 3.5 years ago.

With interest rates this low, I am looking at renting my primary residence and purchasing a second rental unit.

The primary consideration is time versus money, the cost of an attorney versus the loss of rent and to consider whether it's worth hiring one in certain situations. 

I will be "running a business, LLC" from the home but I will be the primary resident.

I don't have much equity in my primary residence, but I have est. 100k in one of the duplexes I own.

Even the experts in the market look like CMHC do not always properly predict what will happen in the future however you could look up their research to get a bit of an idea of the expectation  And if you’re buying just for your primary home then you are better to buy now rather than wait for a possible price decrease because that possible price decrease will happen as interest rates increase and that would mean that your monthly payment would actually be higher. 

It is a primary reason I love RE.