Olen Properties is a privately held, family-owned real estate investment and property management firm founded in 1974 by Igor Olenicoff. Headquartered in Newport Beach, California, the company has developed into a diversified owner-operator with over 30 million square feet of real estate managed throughout its history. The firm's current portfolio includes more than 8 million square feet of commercial space and approximately 18,000 multifamily units across eight states. The company focuses on long-term property ownership through disciplined acquisition and internal growth, having achieved expansion without external equity financing. Asset classes include office, flex space, warehouse, research and development facilities, and multifamily residential properties. Geographic operations span California, Florida, Georgia, Tennessee, South Carolina, North Carolina, Arizona, and Nevada. Since 2017, the firm has added close to 5,000 multifamily units, with over 10,000 units concentrated in Southeastern markets. In December 2025, Olen completed its largest single-property acquisition, purchasing a 636-unit apartment complex in Alpharetta, Georgia for $180 million. The company maintains a vertically integrated structure with in-house construction, property management, marketing, accounting, and legal services. Leadership is shared between founder Igor Olenicoff and his daughter, CEO Natalia Ostensen.