- December 18, 2025
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Triple net lease specialist and Calkain Cos. co-founder David Sobelman has left the Herndon, Va.-based firm to start his own commercial real estate brokerage.
Like Calkain, the new Tampa-based 3 Properties is focusing on triple-net deals, in which tenants pay pre-arranged operating and other expenses such as taxes, insurance or utilities.
But Sobelman intends to revamp his brokerage business model for 3 Properties and charge clients less in transaction fees, by “drastically” eliminating overhead and expenses.