However your multiplier is huge. 

HelloGEOGRAPHYCountyNJ:MIDDLESEXPROPERTYProperty TypeResidential: Multi-FamilyResidential: SFRResidential: TownhouseResidential: DuplexResidential: TriplexEquity(%)30 40 to 100 % maybe as low as 20% depending on the fluctuation of values Last Market Sale Date01/01/1950 1900-01/01/2006 2009OPTIONSOWNER-OCCUPIEDAbsentee Owned In-StateAbsentee Owned Out-of-StateALL STATESADDRESS-COMPLETENESSMailing and Property address CompleteCORPORATE-OWNEDExcludeAddsExclude trust ownedInclude a Value not to exceed median and not lower than a multiplier of value times % of equity that youre comfortable buying.Since you can't grab BEDS add Sq 1100- 1800

Eventually as time passes you will experience a 20-22 times multiplier. 

My business has increased and multiplied just due to coffee and a few ride arounds with them.

You'll find that due to repeat, referral and TOM that your marketing dollar will decrease considerable and that your returns will be in the low 20 times multiplier.

Each year the assessor releases updated assessed values for all properties across the county and multiplies the assessed value by the millage rate to derive property taxes for individual properties.

@Mark Moore , some of your numbers don't add (or multiply) up.--$875/month is $10,500/yr not $10,800--those maintenance and management expenses seem very low.  

What I usually do is take the most recent 3-5 properties and do an average price per square foot and then your subject property multiply the square footage by your average price per square foot - this should get you close to a comp price.  

Log how many hours you spend doing this and multiply by whatever you believe your hourly time is worth....then see if you actually saved any money DIY..........just sayin'

I've heard people claim things like 70+% APR because so much of their payment is interest.A lot of people don't understand that interest is ALWAYS calculated as outstanding principal multiplied by interest rate.