Seth Perlman joined his father in 1985 in a practice that had a mix of general and non-profit work. He enjoyed working in the philanthropic sector so he began focusing his efforts in that direction and the firm began to grow. However, after the two-volume treatise he wrote on fundraising regulation was released by Wiley in 1988, things really took off. His firm experienced an influx of business and a steady growth trajectory that continues today. Perlman+Perlman is now the largest provider of state charitable solicitation registrations in the country.