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Ontario Ranch, California facts for kids

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Ontario Ranch
Master-planned community
Country  United States
State  California
County Flag of San Bernardino County, California.png San Bernardino
City Ontario

Ontario Ranch is a master-planned community located in Ontario, California. It is the largest master-planned community in Southern California. The community is located south of E. Riverside Drive, between Euclid Avenue and Milliken Avenue, 2 miles west of Interstate 15 and south of the California State Route 60 Pomona Freeway.


The Sphere of Influence area, commonly referred to as the “Ag Preserve,” was the last significant underdeveloped area in the San Bernardino valley. In 1993, the San Bernardino Board of Supervisors voted to consider dissolving the Ag Preserve status, which allowed the transition from agricultural uses to residential and commercial development. On November 30, 1999, the Sphere of Influence was annexed, and became known as “New Model Colony”, a working name used by the City of Ontario to refer to William Chaffey and George Chaffey's efforts planning Ontario as a model to other cities for layout and infrastructure. The Chaffey brothers purchased the agricultural and ranch lands in 1881.


Ontario Ranch is envisioned as a 8,069 acre mixed‐use development area. There will be 1,000 acres of public open space, parks and schools that are connected via pathways and trails. The community will be developed over a 20-year period. Once complete, Ontario Ranch will have 47,000 homes and 162,000 residents (3) along with 16 million square feet of retail, office, medical and residential space and eight new schools.


Currently, 2,900 acres have been approved for single-family residences, multi-family residences, commercial and business park uses. There are an additional 447 acres that have project applications in progress for additional single-family residences and industrial use. According to the City of Ontario, overall density cannot exceed 4.6 units per acre and average lot size is 6,728 square feet.

Master-Planned Communities

  • Park Place by Lewis Community Developers and Stratham Communities
  • New Haven by Brookfield Residential


  • West Haven by Lennar Corporation (single-family residences)
  • Holiday by Brookfield Residential (townhomes)
  • Waverly by Brookfield Residential (single-family, detached residences)
  • Summerset by Brookfield Residential (single-family detached residences)
  • Canopy Creek by Woodside Homes (single-family detached residences)
  • Waterford by Woodside Homes (single-family detached residences)
  • Hadleigh by KB Home (single-family detached residences)
  • Margate by KB Home (single-family detached residences)
  • Kensington by TRI Point Homes (single-family detached residences)
  • St. James by TRI Pointe Homes (single-family detached residences)
  • Camden by Ryland Homes (single-family detached residences)

The First "Gigabit" Community

Ontario Ranch is developing a connected gigabit infrastructure, which will make it the first “gigabit community” in the region, with fiber-optic cable built into the infrastructure to provide ultra-high speed Internet access to residents. Inyo Networks will provide the service, costing $50 per month through homeowner association dues and subscriber dues. Park Place residents were the first residents to receive access to the gigabit service, costing $60 per month.

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