How to Get more Details on Off-market properties

[Irvin Ricano]

I’m actively looking for deals around my neighborhood and I found a dilapidated property that has potential. How do you find more information on a property that is off market. I am on the tax assessment system but I cant find the amount of units, beds and baths. I does show sqft, zoning, year built, etc. How do you go about figuring that out. I have contacted the seller but they aren’t interested in selling. I wanted to make sure it was a good deal before I tried to convince them to sell.