Market reaearch question
Hi CRE, 

  I am looking for someway (web based tool, 3rd party company, etc) to be get a list of all 4 unit multi family properties in a geographic area. I Know this property type isn't strictly CRE, and I'm very sorry. However , it would seem you folks do a fair bit of market research for your deals than an investor who has a certain type of property in a given 4 sq mile area. 

I posed this question in /r/realestate, and it didn't yield many results so I started thinking that maybe this is more up your alley. Any help or redirections are welcome. 
[{"id": "ciyy9gm", "text": "If you're looking to buy, check an mls. Otherwise, the building type is probably too small for anyone to care enough to keep tabs on. You're better off comparing the individual units for pricing and such. You can probably also check a local government office if they have that kind of information.", "replies": [{"id": "ciz6m77", "text": "Thanks for the help.  I am looking to buy, but not right away and I don't necessarily care if they have put it on the market. I did get a promising lead at one of the govt offices. However, she could only get a list of properties with 4 - 19 units. I thought that was an odd cutoff. Any idea why not 20?", "replies": [], "depth": 2}], "depth": 1}, {"id": "cj0fy8y", "text": "Just some follow up. Assessors office. They sent me an excel file with 4-19 unit properties. Property address, owners address, and # of units. ", "replies": [], "depth": 1}]