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Title 18 — Zoning

Chapter 18.61 — COMMERCIAL TRANSITION OVERLAY (CTO) ZONE

Norco Zoning Code · 2026-06 edition · updated 2026-07-06 · Norco

§ 18.61.10. Intent and Purpose

The Commercial Transition Overlay (CTO) Zone is hereby created to allow for the transition of existing zoned properties into a C-G (Commercial General) zone.

A CTO zone will be used in combination with base districts/zoning regulations and will NOT change the underlying zoning category, i.e., all permitted uses remain the same. A CTO zone is superimposed over the established zone and establishes additional regulations.

The intent of the CTO zone is to encourage future commercial development of designated sites while providing the existing uses in the underlying zone the right to maintain their underlying zoning, continue the use, expand, improve, and alter or move buildings on their property, but with limitations. The purpose of the CTO zone is to protect the existing uses, while encouraging commercial development.

(Ord. 856, 2006)

§ 18.61.20. Applicability and Regulations

The following regulations and general rules set forth in this Chapter 18.47 (AMENDMENTS AND ZONE CHANGES) shall apply to a CTO zone. Where a conflict in regulations occurs, the regulations specified in this Chapter shall apply. When this overlay zone is applied by the zone change process, the area so zoned shall have "CTO" in parenthesis added as a suffix to its base zone. In addition, each CTO shall be consecutively numbered on the official zoning map. For example: M-1 (CTO-1) or A-1-20 (CTO-2). Consecutively numbering the CTO zones will provide a distinction among CTO areas in the City.

§ 18.61.30. Uses Permitted

All uses permitted and conditionally permitted in the underlying zone shall be permitted and conditionally permitted, respectively, pursuant to the regulations set forth in this chapter.

§ 18.61.40. Development Standards

All development standards in underlying zone shall apply.

§ 18.61.50. Limitations

The following restrictions shall be applicable to uses and development in the CTO zone:

  • (1) Expansions or alterations of existing uses or structures, when a CTO zone is applied, shall not exceed 25 percent of the existing floor area, with expansions and alterations requiring review and approval of a site plan by the Planning Commission. In the event expansions and alterations are done in phases and/or over the life of the uses allowed in the underlying zone, the cumulative result of those expansions and alterations shall not exceed 25 percent of the existing floor area;

  • (2) If uses or structures on properties designated with a CTO zone are involuntarily destroyed to any extent, including total destruction, they may be rebuilt to the identical use and original floor area;

  • (3) Change of property ownership for those properties with a CTO zone shall not require a zone change to a C-G zone. However, if all permitted or conditionally permitted uses of the underlying zone on a property are discontinued for a period of 120 days or more, the City shall process a zone change to change the underlying zoning designation on a subject property to C-G, and the overlying zone shall no longer apply; and

  • (4) Voluntary termination of an entire use and demolition of all structures on a property where a CTO zone is applied shall require that the City process a zone change on a subject property from the underlying zone to a C-G zone before re-development on the subject property is allowed.

§ 18.61.60. Establishment of a Commercial Transition Overlay Zone

A CTO zone may be established upon motion of the Planning Commission, City Council, or at the request of property owner or owners in accordance with the procedures set forth in Chapter 18.47 (ZONE CHANGES).

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Contents — Norco Zoning Code
Norco Zoning Code
  1. Title 18 — Zoning
    Overview
    1. Chapter 18.01 — INTRODUCTION
    2. Chapter 18.02 — DEFINITIONS
    3. Chapter 18.03 — ESTABLISHMENT OF ZONES AND ZONING MAP
    4. Chapter 18.10 — OS-ZONE OPEN SPACE
    5. Chapter 18.11 — LD ZONE LIMITED DEVELOPMENT
    6. Chapter 18.12 — A-E ZONE AGRICULTURAL ESTATE
    7. Chapter 18.13 — A-1 ZONE AGRICULTURAL LOW DENSITY
    8. Chapter 18.14 — A-2 ZONE AGRICULTURAL
    9. Chapter 18.15 — R-1 ZONE RESIDENTIAL SINGLEFAMILY
    10. Chapter 18.16 — ANIMAL-KEEPING OVERLAY (AKO) ZONE
    11. Chapter 18.17 — R-3 ZONE LOW-DENSITY MULTIPLEFAMILY RESIDENTIAL
    12. Chapter 18.22 — C-O ZONE COMMERCIAL OFFICE
    13. Chapter 18.23 — C-4 COMMERCIAL ZONE
    14. Chapter 18.24 — M-1 ZONE HEAVY COMMERCIAL/LIGHT MANUFACTURING
    15. Chapter 18.25 — M-2 ZONE GENERAL MANUFACTURING
    16. Chapter 18.26 — HS ZONE HILLSIDE (AGRICULTURAL/LOW DENSITY) AR…
    17. Chapter 18.27 — PD OVERLAY ZONE PLANNED DEVELOPMENTS
    18. Chapter 18.28 — P-E ZONE PEDESTRIAN-EQUESTRIAN TRAILS
    19. Chapter 18.29 — C-G (COMMERCIAL GENERAL)— REPLACES CHAPTERS 18…
    20. Chapter 18.30 — GENERAL PROVISIONS— MISCELLANEOUS
    21. Chapter 18.31 — GENERAL PROVISIONS–YARDS, SETBACKS, AND HEIGHT…
    22. Chapter 18.32 — GENERAL PROVISIONS—HOME OCCUPATIONS
    23. Chapter 18.33 — GENERAL PROVISIONS–SERVICE STATIONS
    24. Chapter 18.34 — VEHICLE SALES FACILITIES
    25. Chapter 18.35 — GENERAL PROVISIONS–STANDARDS AND PROCEDURES RE…
    26. Chapter 18.36 — GENERAL PROVISIONS–RELOCATION OF BUILDINGS
    27. Chapter 18.37 — SIGNS
    28. Chapter 18.38 — GENERAL PROVISIONS—OFF-STREET PARKING AND LOAD…
    29. Chapter 18.40 — SITE PLAN REVIEW
    30. Chapter 18.41 — ARCHITECTURAL REVIEW
    31. Chapter 18.42 — SIMILAR USES PERMITTED BY COMMISSION DETERMINA…
    32. Chapter 18.43 — HEARINGS AND APPEALS THEREFROM
    33. Chapter 18.44 — VARIANCES
    34. Chapter 18.45 — CONDITIONAL USE PERMITS
    35. Chapter 18.46 — REVOCATION AND EXPIRATION OF PERMITS AND VARIA…
    36. Chapter 18.47 — AMENDMENTS AND ZONE CHANGES
    37. Chapter 18.48 — ENFORCEMENT, LEGAL PROCEDURES AND PENALTIES
    38. Chapter 18.49 — VALIDITY AND SEPARABILITY
    39. Chapter 18.50 — BOARD OF ZONING ADJUSTMENT
    40. Chapter 18.51 — SPECIAL EVENTS
    41. Chapter 18.52 — SPECIFIC PLAN
    42. Chapter 18.53 — ADULT ENTERTAINMENT ESTABLISHMENTS
    43. Chapter 18.54 — TRANSPORTATION DEMAND MANAGEMENT
    44. Chapter 18.55 — WATER EFFICIENT LANDSCAPING
    45. Chapter 18.56 — CHILD CARE HOMES AND CENTERS
    46. Chapter 18.57 — WIRELESS COMMUNICATIONS FACILITY REGULATIONS
    47. Chapter 18.58 — HISTORIC PRESERVATION OVERLAY ZONE
    48. Chapter 18.59 — ROOMING AND BOARDING HOUSE
    49. Chapter 18.60 — REGULATION OF RECYCLING FACILITIES
    50. Chapter 18.61 — COMMERCIAL TRANSITION OVERLAY (CTO) ZONE
    51. Chapter 18.62 — PRESERVATION AND DEVELOPMENT ZONE
    52. Chapter 18.63 — HOSPITALITY DEVELOPMENT ZONE
    53. Chapter 18.64 — HOUSING DEVELOPMENT OVERLAY (HDO) ZONE
    54. Chapter 18.65 — RESIDENTIAL DENSITY BONUS PROVISIONS
    55. Chapter 18.66 — EMERGENCY SHELTERS
    56. Chapter 18.67 — PROHIBITION OF MARIJUANA CULTIVATION AND TRANS…
    57. Chapter 18.68 — ACCESSORY BUILDING USE PERMITS
    58. Chapter 18.69 — SHORT-TERM RENTALS
    59. Chapter 18.70 — INCLUSIONARY HOUSING PROGRAM

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