Usually investment properties will want a 20-30% down payment in addition to closing costs, so it's not going to be a good idea in your current state.

4) Can the current owner of the property sell it without involving the tax certificate holder?

At the same time it's currently functioning with no sign of substantial compromise to the cast iron pipe beside the age.  

Or are they going to show you something that has been shown and turned down by all of their current investor clients?

A triplex fully rented out that currently generates an income of 3K.

I currently live in New York but I am currently exploring the options of investing in a small multifamily property.

I currently have a single mom in the property . 

I will reach out further when we start to discuss land acquisition as we will need help with that since I am currently a licensed realtor but not actively selling.cheers 

Florida already passed an anti-squatter law and the process is faster and simpler:Under HB 621, a property owner can request law enforcement to immediately remove a squatter from their property if the following conditions are met:The individual has unlawfully entered and remains on the property;The individual has been directed to leave the property by the owner but has not done so; andThe individual is not a current or former tenant in a legal dispute.

I had been looking for properties around the area I currently live, but very few make sense in regard to the numbers given the current state of the economy.