Downtown San Diego Over the last 15 years, Downtown San Diego has become a full-fledged residential real estate market. In the early 1990s, the Harbor Club became a forerunner, introducing Downtown San Diego to luxury, high-rise residential living. Since then, condominium growth has spread throughout downtown. Today, the majority of units are in the following areas: Columbia, Cortez Hill, East Village, Little Italy, and Marina (Chart A). Over the next 3 years, new construction is expected to add 35% more units to the downtown area, mostly coming from those areas except Cortez Hill (Chart B).