It's an estimated cash on cash return given current rental rates subtract expenses assuming 7% interest rate, 10% management fee, 5% repairs, 5% capex and other expenses like mortgage, insurance, tax. it's a estimate to tell you what properties to analyze vs ignoreyou can see the are pockets of negative returns as well as pockets of positive return. this is to supplement the data @Devin Conley provided

I then would have my tax cpa enter in or do it after discussing tax based items (depreciation- MACRS, reserves, year end accruals, reserves, etc.).

I use a spreadsheet I developed to determine my entry costs, carrying costs, cash flow, tax write offs, appreciation and exit costs.

Is it tax smart? 

You’d also make all future capital gains at least partially taxable instead of tax exempt by converting your primary to a rental.

Closing costs - you will have to pay taxes/stamps etc. typically as a seller.4.

And i found launch control but the minimum is $500 a month, but they use cross-referencing data across sources to find the most accurate contact information by using a person's name and address to find their phone number, real address and email by accessing public databases, phone number directories, credit reports, utility bils, public tax records, and social media profiles. this is waaay expensive for me as a beginner. what do you suggest or if anyone has any suggestion I'd greatly appreciate it.??

If you are going to sell then you must understand the tax implications. 

Rent Per Unit $‎650 $‎700 Other Income $‎750 $‎800 Less Vacancy $‎(3,120) $‎(3,360) Operating Expenses $‎18,790 $‎19,809 Repairs $‎4,000 $‎4,200 Capital Expenses $‎2,000 $‎2,100 Landscaping $‎1,500 $‎1,575 Utilities Vacant Units $‎288 $‎302 Property Taxes $‎6,000 $‎6,300 Insurance $‎1,500 $‎1,575 Management $‎3,002 $‎3,232 Other $‎500 $‎525 Net Operating Income $‎41,241 $‎44,831 Financing Expenses $‎22,224 $‎22,224 Cashflow $‎19,017 $‎22,607 Down Payment $‎21,000 $‎21,000 Cash on Cash Return 90.55% 107.65% Keep in mind, this return doesn't even include the principle pay down on the loans.

If it’s verbal, they’ll need to document any prior communication or payment records to establish the relationship.If the PM is completely unresponsive, they may want to send a formal written demand for communication and payments via certified mail.