I am new to rental appartment so wanted to get some advice, if I build a 7 unit appartment for $700,000, say mortgage of  $4000 per month.

In fact, the average real estate investor saved $19,000 annually per property under the TCJA.

My net number is rental income minus expenses(3 mortgages, paying power bill at all three houses, property tax, insurance, internet in two properties).

People claim that 1031 investors over pay all the time just to avoid taxes.  

So, your soft expenses alone would be 15% of the $2,000 rent which is $300 per month.

Or does it have to based off a straight paying tenant?

First question would be: what is the cost per kwh vs cost per gal of LPG?

I know out here on the West coast with our digitalized title plants that each title company has it would be a matter of a few clicks for customer service department to transmit a copy of the mortgage to me..

Unless new companies create replacement jobs, the only remaining positions will be lower-paying service sector jobs.

I obviously want to pay the lowest taxes over time.