Not full proof, but I like the mechanics of this. 

Restaurants, auto mechanics, massage spas and tanning spas.

But pretty much every HML will require PG's as well.. but if they have a mechanism to get the property back without a foreclosure then maybe they don't need it.. and frankly with the no money down borrower with limited capital the PG is kind of worthless anyway.. again just spit balling here.. but in mortgage states like OHIO were foreclosures take a long time.. 

We also have all high efficiency mechanicals, so the energy usage isn't much.The reason I asked about a garden is because invariably, green-minded tenants love to garden.

This also opened up space in the mechanical room that is now one of the bedrooms in a 3 bedroom unit.

The numbers look ok but that can vary GREATLY based on the ares, the age of the building, the age of the major mechanicals, how much work will be needed once a tenant moves out to make it rent read and other misc variables.

I'm a mechanical engineer currently working full time in the utility industry.The more I read and learn, the more I'm realizing that my next move would be to invest passively to gain experience for future investments.

My post was more along the lines of things that might not be so obvious other than 50% for expenses, and check mechanicals for serviceable age remaining.

Getting the license will first help educate you on real estate, second allow a mechanism for you to make money from real estate. 

I've joined the two major landlord Facebook groups for Ontario and it's been an eye-opening reading experience.. the mechanics of screening tenants such as verifying income and credit are still a total unknown to me so I appreciate your advice.