They typically don’t go above 50% ltv and usually pay cash for the properties.The only people who would do this is private individuals with deep pockets.

While this approach ensures more reliable tenants, it also limits the pool of prospective renters, making it challenging for individuals with less conventional financial profiles to secure housing.Given these challenges, I have decided to exit the Ontario rental market.

Some carriers offer loss assessment insurance, which can come into play when the HOA experiences a large covered insurance loss, such as a hail storm requiring roof replacement or a fire requiring building replacement.  

Since you're an individual, mainly whether or not the 4plex was built in the last 15 years.Assuming the tenants have occupied their units for over a year you'll want to give a 60 day notice.Alternative route?

I would not invest in real estate with a retirement account.Its too much of a headache and likely not that much better as an investment alternative within a retirement account1) Real Estate provides tax benefits for individuals who own them.

nice job I grew up flipping land I love that play still fund land flippers to this day is a niche of lending that I have carved out.. 

In order to avoid wasting time on a bunch of individual showings with unqualified applicants, perhaps consider doing what I do and host “open house” style showing windows. 

Would love to network and build relationships with like minded individuals. 

Quote from @Jaycee Greene: Are you wanting to own individual MHs?

Buying raw land near brown field could be a good long term play.