Brooklyn roots and strategic alignment: TerraCRG joins IREON as strategic partner of Principals Direct Group

Brooklyn, NY For Steve Kirschner, Brooklyn is more than a market — it is home, heritage, and the foundation of a lifetime in commercial real estate. TerraCRG’s role as a newly welcomed member of IREON reflects a shared commitment to relationship-driven business and deep, Brooklyn-rooted expertise.

Kirschner, COO of Principals Direct Group and founder of IREON, comes from a multi-generational Brooklyn real estate family. His father, Saul Kirschner, founded a commercial real estate firm in the 1930s, and his mother later joined the business, becoming the first woman member of the Industrial Real Estate Brokers Association (IREBA).

Building on decades of industry experience, Kirschner launched Principals Direct Group in 2017, a firm that works exclusively with owners of income-producing real estate. The company specializes in off-market acquisitions and dispositions across all major asset classes, providing tailored advisory services on a local, national, and global scale.

Complementing that work is IREON, which Kirschner founded in 2016 as a referral-only business development organization made up of executive-level, non-competing service and product providers. Originally focused on the commercial real estate industry, IREON has since expanded to include all businesses. Built on trust, collaboration, and active relationship-building, the network connects members through shared knowledge and strategic introductions.

“IREON is about contributing to each other’s success,” said Kirschner. “When you don’t have to sell your service, but simply deliver it, success follows.”

TerraCRG’s membership in IREON reflects a philosophy that defines the firm both internally and externally: collaboration, mutual support, and long-term relationship building.

“Brooklyn has always been a relationship-driven market,” said Matt Cosentino, partner and sales EVP at TerraCRG. “Our mission has always been to collaborate — within our firm, with our partners, and across the communities we serve. Joining IREON aligns with how we do business every day: supporting each other, sharing knowledge, and delivering the best outcomes for our clients.”

Externally, that collaborative culture extends throughout Brooklyn. TerraCRG’s partners and team members are actively engaged in the borough, serving on nonprofit boards and supporting local organizations and community initiatives. This civic involvement is core to the firm’s identity and reinforces its deep ties to the neighborhoods it serves.

As Brooklyn’s leading commercial real estate brokerage firm, TerraCRG continues to set the standard through its exclusive focus on the borough, more than $3 billion in completed transactions, and unmatched local expertise. Its participation in IREON underscores a mission centered on integrity, collaboration, and community — principles that continue to position TerraCRG as a trusted advisor and driving force in Brooklyn’s commercial real estate market.