You might also consider investing in a data migration tool like propertyradar 3) ASSIGNING THE CONTRACT The biggest frustration I have with wholesalers is valuation ignorance.  

New twist, found the property assessment data last night and discovered it is zoned commercial.

In other words, is there a connection for DMX data on each fixture, as well as +12 V power?  

Question: Is their a resource that has data on Rent Rates and absorption rates within a specific zip code??

However, if you're ok with self inputting data then you could put an excel document on google or Microsoft cloud for free and train the renters to update the spreadsheet themselves but ensure you keep a master spreadsheet.

Most only break data down to metro areas and small cities.  

In some states the data goes into public records.

If you are an agent, then look in MLS for historical data over the last year or two in the area and type of investment your clients are looking for (say, "2bdrm/1ba condos in Arlington").

To give you a sense of how much of an issue a major road is, in my market, after much calculating and data tracking, I normally minus around $80K or around 10% off the comps to estimate ARV if the house backs to a major street.

(Emphasis mine)http://www.sec.gov/Archives/edgar/data/896878/000089687813000149/fy13q410-kdocument.htmCall 'em up, Joe, and tell them they are fly-by-night.