Eventually, Class A property values increased to the point that even increasing rents didn't allow them to cashflow upon purchase.So, the flood of new investors switched to buying Class B properties.

$20k for the sophisticated investor class, and then only two passive deals at $50k each .

Definitely sounds like an interesting asset class.

General area and property class would be needed at a minimum for anyone to offer an intelligent response. 

Deduct NEW property taxes after you buyDeduct home insurance costsDeduct maintenance percentage, typically 10%Deduct vacancy+tenant nonperformance percentage(we recommend 5% for Class A, 10% Class B, 20% Class C, good luck with Class D)Deduct whatever dollar/percentage of cashflow you wantNow, what you have left over is the amount for debt service.Enter it into a mortgage calculator, with current interest rate for an investment property, to determine your maximum mortgage amount.Divide the mortgage amount by either 75% or 80%, depending on the required down payment percentage - this is your tentative price to offer.If the property needs repairs, you'll want to deduct 110%-120% of the estimated repairs from this amount.Be sure to also research the ARV and make sure it's 10-20% higher than your tentative purchase price.As long as the ARV checks out, this is the purchase price to offer.It is probably significantly below the asking price.

@Rafael Ramos All your goals contradict each other:(1) Cashflow: buy Class C & D properties2) Appreciation: buy Class A & B properties3) Low Crime: buy Class A & B properties4) Why would you want your investments to lose money to lower your taxes?

My crime prevention class was canceled and I’m looking for an update on the rescheduled date.

@Jacklyn Robins not trying to be difficult, but how many Class C or D properties do you have besides this one?

The technical term is Sound Transmission Class. 

I also agree, that income is not a protected class.