Focus Property Group started the construction of Mountain's Edge in February, 2004. The development plans included 14,500 homes and more than 22 neighborhoods with stores, office space, and shopping centers. By 2008, 7,000 homes had been built but during that year, a downturn in the housing market was cited for delays in further developing the site.
A number of community parks were initially planned: Exploration Park, Mountain's Edge Regional Park, Paiute Park, Helen Stewart Park, John C. Fremont Park, and the Nathaniel Jones Park. By 2009, only the 85-acre Exploration Park had been developed. In 2009, the development company proposed downgrades for the other parks due to lack of funds.