It does not matter if you have 1 or 100 accounts, what matters is that you do the bookkeeping to keep track of your costs, expenses and income for the property.

And to get their attention, you need a long track record and infrastructure, as well as the right deal(s).

I also kept track of the properties that I made offers but didn't go through with but another investor bought.

All you need is a single place to track tenant information, payment history, maintenance, and a few other things.

After the September 11 attack on the world trade towers, they passed a lot of laws aimed at being able to track people, requirements on having identification to open a bank account, and reporting on tax transactions of over $10,000. 

@Chad U. you’re on the right track, but let’s break it down a bit further.

How do you typically keep track of upcoming community developments?

Go to Etsy and search for "rental property tracker," and you will find hundreds of excellent spreadsheets to track 10-20 rentals, usually for under $10.

You’re on the right track!

They will be proven successful investors from your area who meet up once a month to go over what works for them, what's aching them, and they're typically very willing to help new investors.