Two VA loans (one for each of us) were beneficial, and moving regularly enabled us to leave a trail of rental and flip houses behind.  

pro tip:  check out the credit pulls database. 

I want to upload the say, excel list, or add them to a database with a date entered, and link up to some type of direct mail house that knows that:- Each uploaded list will go through a series of 6 different postcards/letters.

I have not found a database of current grandfathered properties, but that would be awesome.

Hey Tate, here's what my commercial lender @ US Bank uses for pro forma debt coverage calculations if he doesn't have 2 years and YTD historical data (basically, seller's schedule E's)Vacancy: 10% of gross rents, unless there is sufficient market data at the bank's disposal to justify lower vacancy rates for the type of asset in question, OR detailed historical vacancy data from seller.Management: 3% gross rents or actuals, whichever is higher, with property management agreement provided to close.Cash Reserves: 3% of gross rentsTaxes: Actual data used.Insurance: 3% of gross rents, or as shown by insurance policy.Operating reserve: 20% - 25% depending on the type of asset and amount of historical data provided.

You generally have more contacts that you think you do -- your database, properly nurtured, can shake out transactions at a 6:1 ratio. 

Currently renting both units with a CoCROI of 13.2% [taking all expenses including vacancy, CapEx, and property management (even though I'm currently managing it) into account].Currently living an extremely frugal lifestyle which is what enabled me to purchase this initial property.

search the assessor's database for the county of the property. 

I pulled from the REIPro database, Propelio, and finally a Realtor that was able to pull from MLS.

I live in Fairhaven so I would google "fairhaven online assessors database"........