Boomsma runs LeadingRE, one of the nation’s most influential brokerage networks with over 550 firms and some 138,000 agents in over 70 countries. The invitation-only organization counts many of the nation’s largest independent brokerages as members, who network and share best practices and referrals with each other. In 2005, at his start with LeadingRE, he created its Luxury Property International, which he led until becoming CEO of LeadingRE in 2018.