Factor into your cap expenses- loss of your furnace, water heater, and any thing of value that can be removed easily when it becomes vacant.  

Repairs can get done very easily, one piece at a time instead of pulling up whole sections.

The costs could easily be double what you estimated.

Here in Massachusetts a 4 family can easily have a water and sewer bill of over $200 a month.

It's hard to just use a blanket percentage of rental income without understanding the asset condition and class.Insurance- Insurance agent can get you a ballpark on this pretty easily especially for a run of the mill 3/1 rowhome.

I can easily get what I owe for my vehicle.

If they are professional, they can explain this quickly and easily.

I personally like investing in an area I can easily drive to because it make the acquisition and management processes easier.I would select a market first and then build your team.

I'm confident I can easily double my portfolio if I was to come across the right deal.

Mine can set door codes, message (or call) guests, schedule cleaners, adjust the thermostat, monitor my cameras, & call a plumber just as easily as a local PM can, for 1% of the costHire good cleaners, a solid handyman & befriend some helpful neighbors.