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Division 6.06 — Street Naming and Address Numbering

8.1 (Sign Regulations) of this Development Code, signs installed within the AG Overlay…

Ontario Municipal Code · 2026-09 edition · updated 2026-09-27 · Ontario

comply with the following:

                    (1)    Freestanding Signs. One unlighted single or double faced sign shall

be permitted, not to exceed 6 FT in height and 12 SF in area, for each 60 FT of street frontage, and shall be placed behind the street property line.

                    (2)    Wall Mounted Signs. One wall-mounted sign shall be permitted on

each building elevation facing a street, not to exceed one SF of sign area for each lineal foot of building elevation length, not to exceed 50 SF.

     2.    EA (Euclid Avenue) Overlay Zoning District.

           a.     Purpose. The purposes of the EA Overlay zoning district is to recognize and

protect Euclid Avenue as a major scenic and historic resource of the City, and major contributor to Ontario's historic downtown. Furthermore, the EA Overlay zoning district is intended to help identify and safeguard Euclid Avenue's position on the National Register of Historic Places.

           b.      Applicability. The herein established rights and responsibilities applicable to

the EA Overlay zoning district shall apply to all property located within the boundary of said Overlay District, as shown on the official Zoning Map of the City. The EA Overlay zoning district provisions established herein, shall apply to all existing and new building construction, additions, remodels, or reallocations, whether or not a building permit is required, or other similar entitlement by the City.

            c.    Development Standards and Guidelines. Land development within the EA

Overlay zoning district shall be designed and constructed pursuant to the standards and guidelines applicable to the underlying base zoning district and the requirements of the Downtown Ontario Design Guidelines (see Reference C—Downtown Ontario Design Guidelines), as applicable.

           d.      Certificate of Appropriateness Required. A development project within the

EA Overlay zoning district, which requires Development Plan approval pursuant to Section 4.02.025 (Development Plans) of this Development Code, shall require the approval of a Certificate of Appropriateness pursuant to Section 4.02.050 (Historic Preservation—Certificates of Appropriateness and Demolition of Historic Resources).

(Rev. 11.04.2025) Page 6.01-82 Ontario Development Code

Division 6.01—District Standards and Guidelines

            e.     Medical Offices and Clinics. Medical offices and clinics within the EA

Overlay zoning district, and which are located in the MU-1 zoning district and have street frontage on Euclid Avenue, shall be allowed only on the second floor of a building or above (occupancy of the ground/first floor shall not be allowed). Medical offices and clinics within the EA Overlay zoning district, which are not located in the MU-1 zoning district, or do not have street frontage on Euclid Avenue, may occupy the ground/first floor of a building.

     3.     ES (Emergency Shelter) Overlay Zoning District.

a. Purpose. The purpose of the ES Overlay zoning district (established pursuant to Section 5.01.010.F.3 (ES (Emergency Shelter) Overlay District) is to accommodate the establishment of emergency shelters, supportive housing, and transitional housing land uses within the City.

           b.      Applicability.

                    (1)    The herein established rights and responsibilities applicable to the ES

Overlay zoning district shall apply to all property located within the boundary of said Overlay District, as shown on the official Zoning Map of the City. The ES Overlay zoning district provisions established herein, shall apply to all existing and new building construction, additions, remodels, or reallocations, whether or not a building permit is required, or other similar entitlement by the City.

                    (2)    The ES Overlay zoning district shall be located within areas of the

City that are predetermined by the Housing Element, pursuant to GC Section 65583 and contained within the Policy Plan component of The Ontario Plan. Alternate locations may be established by resolution of the City Council, upon recommendation of the Planning Commission.

            c.    Development Standards and Guidelines. Within the ES Overlay zoning

district, land and improvements thereon shall be designed and developed pursuant to the standards and guidelines of the underlying base zoning district.

     4.    MTC (Multimodal Transit Center) Overlay Zoning District.

           a.     Purpose.

                    (1)    The multimodal  transit  facility anticipated by the  Policy Plan

component of The Ontario Plan is generally located south of Interstate 10, north of the railroad tracks, east of Guasti Road and west of Archibald Avenue. The multimodal center will serve as a transit hub for local buses, BRT, the Gold Line, high-speed rail, the proposed Ontario Airport Metro Center circulator, and other future transit modes. Many of these transit modes require extensive capital outlay and years of planning, environmental review, design, and, ultimately, construction. Much of the financing of these facilities is beyond the control of the City, being handled by other local, regional, State and federal agencies. The development of a multimodal facility and related services is a long term endeavor, anticipated to take years, if not decades, to bring to fruition.

                    (2)    The MTC Overlay zoning district (established pursuant to Section

5.01.010.F.4 (MTC (Multimodal Transit Center) Overlay District) of this Development Code) is currently developed with a ±425,000 SF warehouse/distribution building with ancillary offices, and a ±6,000 SF building used as a contractor's office and yard. These buildings are not suited for residential, retail, or office uses as envisioned by the Policy Plan, and use of these facilities in the

Ontario Development Code Page 6.01-83 (Rev. 02.17.2026)

Division 6.01—District Standards and Guidelines

near term would be somewhat limited, until the property is redeveloped as a multimodal transit center. Consequently, the City wishes to authorize the use of the existing buildings for the purpose for which they were previously used.

                    (3)    The purpose of the MTC Overlay zoning district is to allow for the

establishment of warehouse and distribution land uses, on an interim basis, within existing buildings located within the overly district boundary.

           b.      Applicability.

                    (1)    The herein established rights and responsibilities applicable to the

MTC Overlay zoning district shall apply to all property located within the boundary of said Overlay District, as shown on the official Zoning Map of the City. The MTC Overlay zoning district provisions established herein, shall apply to all existing and new building construction, additions, remodels, or reallocations, whether or not a building permit is required, or other similar entitlement by the City.

                    (2)    Allowed land uses within the MTC Overlay zoning district shall be

limited to warehouse/distribution facilities, ancillary offices, and those temporary land uses allowed within the IG zoning district pursuant to Table 5.02-1 (Land Use Matrix) of this Development Code.

                    (3)    Any expansion of existing buildings or proposals for new building

construction shall require the adoption of a Specific Plan pursuant to Section 4.01.035 (Specific Plans and Amendments) of this Development Code, which prescribes the allowed land uses, development regulations and guidelines, and sign regulations applicable to the project.

                    (4)    The MTC Overlay zoning district shall remain in effect until June 30,

2027, unless otherwise extended pursuant to Section 4.01.020 (Development Code Amendments) of this Development Code, or the existing buildings are removed.

                    (5)      All rights pertaining to the MTC Overlay zoning district established

herein, shall run with the land and shall be transferable to any future owner(s) of property within the MTC Overlay zoning district, and their assigns.

     5.    ICC (Interim Community Commercial) Overlay Zoning District.

           a.     Purpose. The purpose of the ICC Overlay zoning  district (established

pursuant to Section 5.01.010.F.5 (ICC (Interim Community Commercial) Overlay District) of this Development Code) is to allow for the establishment of Community Commercial land uses, on an interim basis, within existing buildings located within the overlay district boundary.

           b.      Applicability.

(1) The herein established rights and responsibilities applicable to the ICC Overlay zoning district shall apply to all property located within the boundary of said Overlay District, as shown on the official Zoning Map of the City. The ICC Overlay zoning district provisions established herein, shall apply to all existing and new building construction, additions, remodels, or reallocations, whether or not a building permit is required, or other similar entitlement by the City.

(Rev. 11.04.2025) Page 6.01-84 Ontario Development Code

Division 6.01—District Standards and Guidelines

                    (2)    The ICC Overlay zoning district may be established pursuant to the

requirements of Section 4.01.040 (Zone Changes) of this Development Code, on property containing existing buildings constructed for occupancy by commercial land uses.

                    (3)    The ICC Overlay zoning district shall allow those commercial uses

allowed in the CN and CC zoning districts pursuant to Table 5.02-1 (Land Use Matrix) of this Development Code, while at the same time preserving the City's vision for the development and use of property consistent with the underlying Policy Plan (general plan) land use designation.

            c.     Expansion of Existing Commercial Structures and Uses.

                    (1)     Within the ICC Overlay zoning district, building expansion, shall only

be allowed for the purpose of expanding an existing, legally established commercial land use, which is allowed pursuant to Subparagraph B.5.b(3) of this Section.

                    (2)    The expansion of an existing commercial building shall be allowed

pursuant to the requirements of Subsection 3.01.020.J (Alteration and/or Expansion of a Nonconforming Nonresidential Structure) of this Development Code and shall be developed consistent with the standards of the CC zoning district.

                    (3)   New  Residential Development. New  residential development,

which is proposed consistent with the Official Land Use Plan (Exhibit LU-01) of the Policy Plan component of The Ontario Plan, shall first require a zone change to the HDR-45 zoning district pursuant to Section 4.01.040 (Zone Changes) of this Development Code, and full compliance with the land use requirements, and development standards and guidelines of the HDR-45 zoning district.

                    (4)     Protection  of  ICC  Overlay  zoning   district  Land  Use  and

Development Rights. All land use and development rights granted by the ICC Overlay zoning district shall be transferable to any future owner(s) of property within the ICC Overlay zoning district, and their assigns.

     6.    AH (Affordable Housing) Overlay Zoning District.

           a.     Purpose. The purpose of the AH Overlay zoning district is to facilitate housing

opportunities within the community via implementation of required rezone programs pursuant to the City's adopted Housing Element where required for compliance with State Housing Element law.

b. Applicability. The herein established rights and responsibilities applicable to the AH Overlay District shall apply to sites identified in the housing inventory, part of the City's Housing Element, located 1) south of Riverside Drive, 2) along East Holt Boulevard between the Cucamonga Creek Channel and Corona Avenue, and 3) areas designated as MU-8C at the northeast corner of West Holt Boulevard and Mountain Avenue.

            c.      Definitions. For the purpose of the AH Overlay zoning district, the words or

phrases listed below, in correct alphabetical order, shall have the meanings hereafter specified:

   Affordable Housing Project. Affordable housing projects for the purposes of the affordable

housing overlay are defined as follows:

Ontario Development Code Page 6.01-85 (Rev. 02.17.2026)

Division 6.01—District Standards and Guidelines

       Tier 1. Any projects with a residential component with at least 20 percent of total units

are designated as affordable to lower incomes via deed restriction or another mechanism to guarantee affordability for a minimum of 30 years.

       Tier 2. Any projects with a residential component with at least 25 percent of total units

are designated as affordable to lower incomes via deed restriction or another mechanism to guarantee affordability for a minimum of 30 years.

           d.    Development  Standards. The development  standards  applicable  to

proposed development in the Affordable Housing Overlay District shall be in accordance with the applicable base zone, other overlay zones, and all applicable provisions of the Development Code, unless otherwise indicated herein, or where necessary to comply with Federal and State law.

                    (1)    Minimum Density. Within the AH Overlay zoning district, all new

residential development, regardless of affordability, requires a minimum density of 20 dwelling units per acre. The minimum density shall be calculated as an average over the entire project area on sites south of Riverside Drive.

                    (2)    Affordable  Housing  Projects. The development  of  affordable

housing projects within the AH Overlay zoning district shall be allowed by right and are encouraged in accordance with the following provisions:

                          (a)      Tier 1 Affordable Housing Projects. Tier 1 Affordable Housing

Projects on property having a base zoning designation of SP, may be developed as follows:

                                                  (i)    Medium  Density  Residential  (MDR).  Affordable

housing projects on property designated as MDR by the Land Use Plan (Figure LU-01) of the Policy Plan, may be developed pursuant to the requirements of either the SP zoning district or the MDR- 25 zoning district.

(ii) Mixed Use (MU). Affordable housing projects on property designated as MU by the Land Use Plan (Figure LU-01) of the Policy Plan, may be developed pursuant to the requirements of either the SP zoning district or a comparable existing zoning implementation tool that aligns with the density and intensity of the proposed project, except that the maximum density allowed shall be equivalent to the maximum density identified for the applicable Mixed Use area in the Land Use Designations Summary Table (Figure LU-02) of the Policy Plan.

                                                         (iii)    Calculating Minimum Density.  If a project with a

base designation of SP develops without a specific plan, minimum density shall be calculated as an average over the entire portion of the project area that is within the AH Overlay zoning district.

                          (b)      Tier 2 Affordable Housing Projects. Tier 2 Affordable Housing

Projects on property having a base zoning designation of SP, may developed in the same manner as Tier 1 Affordable Housing Projects, with the following additions:

                                                  (i)    Medium  Density  Residential.  Affordable  housing

projects on property designated as MDR by the Land Use Plan (Figure LU-01) of the Policy Plan shall allow a maximum density of 25 to 30 dwelling units per acre.

(Rev. 11.04.2025) Page 6.01-86 Ontario Development Code

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▸Contents — Ontario Municipal Code
Ontario Municipal Code
  1. Title 1 — GENERAL PROVISIONS
  2. Title 1 — GENERAL PROVISIONS
  3. Chapter 1 — CITY COUNCIL
  4. Chapter 1 — BUSINESS LICENSING REGULATIONS
  5. Chapter 1 — AMBULANCES (REPEALED)
  6. Chapter 22 — PROHIBITIONS AGAINST CONSUMPTION OF ALCOHOLIC
  7. Chapter 22 — PROHIBITIONS AGAINST CONSUMPTION OF ALCOHOLIC BEV…
  8. Chapter 1 — ADVERTISING DISTRIBUTION
  9. Chapter 1 — ANIMALS AND FOWL
  10. Chapter 1 — AIRPORT RULES AND REGULATIONS
  11. Title 8 — BUILDING REGULATIONS
  12. Chapter 1 — ADMINISTRATIVE AND BUILDING CODE
  13. Chapter 1 — DEVELOPMENT CODE
  14. Chapter 1 — PARKS, PARKWAYS, AND TRAILS
  15. Division 1.01 — Development Code Enactment, Consistency and Se…
  16. Division 1.02 — Development Code Interpretation and Enforcement
  17. Division 2.01 — Planning Agency
  18. Division 2.03 — Public Hearings
  19. Division 2.04 — Appeals
  20. Division 2.05 — City Initiated Modification or Revocation
  21. Division 2.06 — Performance Guarantees
  22. Division 3.02 — Nonconforming Signs
  23. Division 4.01 — Legislative Actions
  24. Division 4.02 — Discretionary Permits and Actions
  25. Division 4.03 — Ministerial (Administrative) Permits and Decis…
  26. Division 5.01 — Zoning Districts and Boundaries
  27. Division 5.02 — General Land Use Provisions
  28. Division 5.03 — Supplemental Land Use Regulations
  29. Division 6.01 — District Standards and Guidelines
  30. Division 6.03 — Off-Street Parking and Loading
  31. Division 6.04 — Congestion Management and Trip Reduction
  32. Division 6.05 — Landscaping
  33. Division 6.07 — Reserved
  34. Division 6.08 — Development Projects and Subdivisions
  35. Division 6.09 — Reserved
  36. Division 6.10 — Reserved
  37. Division 6.11 — Shopping Cart Retention and Storage
  38. Division 7.01 — Historic Preservation
  39. Division 8.01 — Sign Regulations
  40. Division 9.01 — Definitions
  41. Division 9.02 — Glossary
  42. Division 1.02 — Development Code Interpretation and Enforcement
  43. Division 1.02 — Development Code Interpretation and Enforcement
  44. Division 1.02 — Interpretation and Enforcement
  45. Division 1.02 — Interpretation and Enforcement
  46. Division 1.02 — Interpretation and Enforcement
  47. Division 2.05 — City Initiated Modification or Revocation
  48. Division 2.02 — Application Filing and Processing
  49. Division 2.05 — City Initiated Modification or Revocation
  50. Division 2.05 — City Initiated Modification or Revision
  51. Division 2.05 — City Initiated Modification or Revision
  52. Division 2.05 — City Initiated Modification or Revision
  53. Division 2.05 — City Initiated Modification or Revision
  54. Division 2.05 — City Initiated Modification or Revision
  55. Division 3.01 — Nonconforming Lots, Land Uses, and Structures
  56. Division 3.01 — Nonconforming Lots, Land Uses, and Structures
  57. Division 3.01 — Nonconforming Lots, Land Uses and Structures
  58. Division 4.03 — Ministerial (Administrative) Permits and Decis…
  59. Division 4.03 — Ministerial (Administrative) Permits and Decis…
  60. Division 4.03 — Ministerial Permits and Decisions
  61. Division 6.02 — Walls, Fences and Obstructions
  62. ▸Division 6.06 — Street Naming and Address Numbering
  63. Division 6.02 — Walls, Fences, and Obstructions
  64. Division 6.06 — Street Naming and Street Address Numbering
  65. Division 8.01 — General Sign Provisions
  66. Division 8.01 — General Sign Provisions

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