Opened in the mid-1970s by banker and real estate developer James L. McIlvaine, J.L. McIlvaine is a commercial real estate development company. McIlvaine was known for his development of land in Springfield and Seven Corners in the 1950s and in Tysons Corner in the 1960s. He passed away in 1999, but the company he founded continues to thrive. It specializes in commercial property development in northern Virginia, and it also provides property management services.