Tax Overages
After a tax sale, the government recoups the back taxes. But that is usually just a small amount of the value of the property. The remainder is in the custody of the County, and can be recouped by the previous owner. But they are often unaware or unsure of how to do it. That's where you come it. You can search the public records and help manage the retrieval of the funds, for a commission.
Upside: No investment required, no risk
Downside: Legal and regulatory hurdles. Some states require consultants to register and cap commissions. As more people learn about Overages, competition will increase for the larger overages.