Part entrepreneur, part real estate celebrity, Umansky runs The Agency, a global luxury firm that does nearly $14 billion in annual sales, making it the US’s 15th-largest brokerage. The Agency also operates a large franchise wing under the same brand. In addition, Umansky plays a notable industry role as co-founder of the American Real Estate Association, a trade group designed as an alternative to NAR, and he relaunched a lawsuit against NAR on behalf of his private listing network in 2025.