Financing can be expensive and difficult to find.  

Also listen to them if it is difficult to get financing...they're telling you that your math may be off.

This increased demand for rental properties drives rents up.

If private companies continue to provide the insurance, I suspect we will see further increased premium costs which will need to be reflected in the rents tenants pay (all tenants: LTR, MTR, STR).  

Quote from @Yaroslav Shtogun: Thank you James,Do you know how difficult it is to do dimensional variance on the lot?

You could have 10 of these, and they get progressively difficult.  

You’ll want to invest in areas that have tenant interest but also aren't on the extreme end of neighborhood quality—this means avoiding the very toughest spots, where turnover can be high and managing tenants can be difficult.

The BEST method for real estate investing is very simple: increase earnings, reduce expenditures, save, and invest from your own funds.You should focus on increasing earnings and learning how to manage your budget.

You would have to be significantly cheaper than my current cleaners for me to give you a shot, because I generally have only changed cleaners for either consistent subpar work or increasing/unreasonable prices.

These rules have increased risks by making it difficult to get rid of poor tenants that pay their rent.