Depending on where the property is situated and the "local market conditions" I have them rented out as either long term, mid-term or short term.

Quote from @Mike Sfera: This depends on the PM that you are speaking with when you reach out.

It kind of depends on the type of properties you're looking for funding on.

It's dependent on your situation. 

Depends on your goals and what you’re looking for!

It depends how long you plan on living.

It depends where you are on your wealth and life ladder.

Providing relocation assistance to tenants, for example, if I want to sell the property or move back in - this can range from one month's rent to thousands of dollars (e.g tenant has a disability, minor children, elderly it will cost you more), depending on the city.

As a few have mentioned, the best way would be to call the listing agents directly, but depending on how much time you want to dedicate, setting and going on multiple appointments with different people could prove to be time-consuming. 

AND, your son will be at the mercy of the SELLER and dependent on the SELLER's good choices for the life of the loan.