Buying more rental properties

[Tom Roarabaugh]

My wife and I currently own 3 units, 1 duplex and a single family home. We would like to buy more and grow more of a fast paced! How soon will a bank take into a consideration that my rentals provide me extra income that I can use to purchase another property? Has anyone had experience in this? And in my area there is nothing for sale other than single family homes... prefer duplex or more but maybe I’m missing something... thank you all.