I have about 2000 contacts in my database that are either past clients or have signed up for my monthly market update.

What database did you find most useful to crunch numbers on if a property is a good deal for a rental investment.

The larger the database of business owners and investors you make, the better success you will have.

that is going to require a lot of data and database management and offmarket deals are all case-by-case so it almost certainly wouldn't be easy to productize (i.e. you probably couldn't get AI to do this). 

Your entity will need a name and you can check the SOS database to make sure there isn't someone out there already using the name you choose.

The best ways to generate leads are:1) Your personal database (friends, family, your friend's families, etc).

The addressing system only has units 'A', 'B', 'C', and 'D' in their database.

Tax Q and A database?

You can have a tool that monitors the same data sources as you do today, but use the newest techniques in engineering to automatically extract names, addresses and cross reference that information with county databases before streaming that information to your CRM. 

They had to have proof of your current GC license status and run it through their database.