Commercial investor seeking SFH financing advice

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This may seem like an odd question, but I am experienced with commercial lending, but have never purchased a SFH as an investment property. I have a question about financing a SFH. I am planning to purchase a SFH that is adjacent to one of my other properties. Problem: All my reserves are already earmarked for other activities so I do not want to pay cash. I while back, I talked to someone who invests in SFHs and he mentioned a method that I thought was through the FHA where you can purchase up to 10 investment properties at low interest rates, long terms and no prepayment penalties. I researched FHA loans and it appears they only offer loans to owner-occupied properties. Can some help me understand what this person was talking about?