KB Home New Construction Homes in Ontario, California

KB Home has 11 active new construction listings in Ontario, California. Prices range from $583,066 to $978,990, with a median size of 2,111 square feet. Inventory is sourced directly from the builder's own website. Prices and availability can change, so confirm current details with KB Home.

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Inventory last refreshed: September 10, 2026 · Data sourced directly from builder websites.