City of Ontario

Building in the City of Ontario
Ontario, California, is a dynamic and growing city located in southwestern San Bernardino County, approximately 35 miles east of downtown Los Angeles. Strategically situated near major freeways, rail lines, and the Ontario International Airport, the city serves as a regional hub for residential, commercial, industrial, and civic activity. Ontario is bordered by Upland, Rancho Cucamonga, Montclair, and Chino, offering convenient access to regional amenities while maintaining a diverse and community-oriented character. The city features a mix of residential neighborhoods, commercial and industrial districts, civic centers, parks, and recreational facilities that enhance livability and support Ontario’s thriving population.

Since its incorporation in 1893, Ontario has focused on modernizing and expanding its infrastructure while fostering economic growth and community development. Investments in roadway improvements, multimodal transportation, public utilities, stormwater management, and airport-related infrastructure have supported both existing neighborhoods and new development. Beautification projects, park enhancements, and revitalization of commercial corridors reflect Ontario’s commitment to creating a safe, functional, and visually appealing urban environment that meets the needs of residents, businesses, and visitors alike.

Ontario continues to pursue long-term planning initiatives that promote sustainable growth, economic vitality, and improved quality of life. Redevelopment of commercial and industrial areas, upgrades to transportation and mobility systems, and enhancements to parks and community facilities support accessibility, connectivity, and resilience. Through these ongoing efforts, Ontario fosters a welcoming and forward-looking environment that balances development with community character—creating a city that is inclusive, thriving, and responsive to the needs of residents, businesses, and visitors.

Construction Procedure in the City of Ontario
1. Initial Project Planning
Every successful development project in Ontario begins with careful and strategic planning. Developers and property owners should define the project’s vision, scope, and feasibility, reviewing the property’s zoning designation, the City’s General Plan, and relevant provisions of the Ontario Municipal Code. Early evaluation of site conditions—including access, parking, utilities, drainage, environmental constraints, and proximity to schools, parks, commercial or industrial centers, or other public facilities—is essential. Projects are encouraged to incorporate sustainable design practices, compatible architecture, and landscaping appropriate for Ontario’s urban-suburban and industrial-mixed environment to enhance residential neighborhoods, commercial corridors, and the city’s overall character.

2. Pre-Application Consultation and Development Review
Before submitting formal plans, applicants are encouraged to meet with Ontario’s Planning Division for a pre-application consultation. Staff will identify required entitlements, such as Conditional Use Permits, Variances, Design Review, Subdivision or Tract Maps, or Development Agreements, and determine whether environmental review under the California Environmental Quality Act (CEQA) is required. Guidance is provided on land use compatibility, site layout, traffic and circulation impacts, and infrastructure capacity. Early coordination with City staff helps streamline the review process, reduce delays, and ensure projects align with Ontario’s General Plan, zoning, design standards, and community vision.

3. Permit and Application Submittal
Once the project concept is finalized, applicants submit a complete development application to the City. Typical submittals include site plans, floor plans, elevations, landscape plans, and technical studies addressing drainage, traffic, environmental impacts, or geotechnical conditions. Larger-scale projects, such as multifamily housing, commercial centers, industrial developments, or public facilities, may require CEQA documentation, including an Initial Study, Mitigated Negative Declaration, or Environmental Impact Report. A complete submittal enables coordinated review by multiple City departments.

4. Plan Check, Design, and Code Review
Following submission, the project undergoes multi-departmental review. The Planning Division ensures compliance with zoning, land use, and design standards. The Building & Safety Division reviews structural, electrical, mechanical, accessibility, and fire-safety compliance under the California Building Standards Code. The Public Works/Engineering Division evaluates grading, drainage, utility connections, roadway impacts, and other public infrastructure. Staff may request revisions to ensure full compliance with all applicable codes, the Ontario Municipal Code, and City policies.

5. Permit Issuance and Infrastructure Coordination
Once departmental reviews are complete and all conditions are satisfied, Ontario issues the required building, grading, and construction permits. Developers coordinate with utility providers for water, sewer, power, telecommunications, and airport-related infrastructure connections if applicable. Public Works staff inspect and approve public infrastructure improvements—including streets, sidewalks, drainage systems, and utility connections—to ensure compliance with City standards and integration with existing systems.

6. Construction and Inspections
Construction may begin once all required permits are issued. Work must follow approved plans, permit conditions, and applicable codes. Building & Safety inspectors perform inspections at critical stages, including foundation, framing, plumbing, electrical, mechanical, and final completion. Public Works staff inspect public improvements, right-of-way infrastructure, and stormwater or drainage facilities. Any field changes must be approved by the City to maintain safety and code compliance.

7. Final Inspection and Certificate of Occupancy
Upon completion, the Building & Safety Division performs a final inspection to verify compliance with approved plans, codes, and permit conditions. Once all requirements are met, the City issues a Certificate of Occupancy for new structures or Final Approval for remodels, tenant improvements, or industrial modifications, confirming that the building is safe and suitable for use.

8. Project Close-Out
During project close-out, developers complete any remaining obligations, including final landscaping, signage, and public improvements. “As-built” drawings reflecting approved field changes must be submitted for City records. Public Works conducts a final inspection of infrastructure, and performance or maintenance bonds may be released upon satisfactory completion, ensuring formal City acceptance of the project.

9. Ongoing Compliance and Future Modifications
After project completion, property owners must maintain compliance with the Ontario Municipal Code, Zoning Ordinance, and Building & Safety requirements. Any future modifications—including additions, façade improvements, signage, changes in land use, or industrial expansions—require City review and approval. Continued adherence ensures Ontario’s neighborhoods, commercial corridors, and industrial areas remain safe, visually cohesive, and consistent with the City’s long-term vision for sustainable growth, high-quality development, and enhanced community character.‍