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Title 18 — Zoning

Chapter 18.16 — ZONING DISTRICTS, MAPS AND BOUNDARIES

San Dimas Zoning Code · 2026-06 edition · updated 2026-07-06 · San Dimas

§ 18.16.010. Zoning map.

There is adopted the official zoning map of the city and all property within the city is placed in the zones as indicated on said map. A copy of the map shall be maintained in the city offices by the city clerk and duly certified by him. All amendments to the official zoning map shall be noted thereon with the date of the amendment and references to the amending ordinance. The official zoning map is made a part of this chapter the same as though set forth at length in this section. (Ord. 37 § 415, 1961)

§ 18.16.020. Zoning map—Unclassified lands.

  • A. The map attached and marked Exhibit A to the ordinance codified in this title is adopted as the official zoning map of the city. Land shall be used in accordance with the zone designations and the map and this title only.

  • B. Any land or territory in the city which is not indicated on the zoning map as being in any zone shall be construed as being classified the same as that existing on the side of the street opposite said land or territory, and the zoning map is hereby amended to indicate said zone without additional procedure.

  • (Ord. 37 § 308, 1961)

§ 18.16.030. Zoning of annexed territory.

All land or territory annexed to the city after the effective date of this title shall be immediately classified to permit the same uses permitted in the territory by the zoning ordinance and map of Los Angeles County, and only such uses. The zone classifications shall have the same designation as existed while the territory was unincorporated territory, except that the letters "LAC" will follow the zone designations and be a part of the designations. The council may establish specific zoning by ordinance for land or territory to be annexed. Such an ordinance may be adopted concurrently with the annexation. Unless such specific zoning is established by ordinance, the zoning map shall be amended so as to indicate the land or territory annexed as having the zone designations as prior to annexation plus the symbols "LAC," provided however, that the territory within Northerly Annexation No. 1 shall be in those zones as indicated on the official zoning map adopted in Section 18.16.020 . (Ord. 37 § 309, 1961)

§ 18.16.040. Zoning of certain classifications of annexed territory.

Notwithstanding the provisions of Section 18.16.030 , all land or territory annexed to the city after the effective date of the amendment codified in this section which is classified under the zoning ordinance of the county with a minimum area requirement of one acre or more may be used for those purposes permitted under the zone classification R-A-20,000 under the city zoning ordinance,

and the zoning map shall be amended so as to indicate such land or territory as having such zoning designation.

(Ord. 37 § 310, 1961; Ord. 61 § 1, 1962)

§ 18.16.050. Highways.

Whenever any map in this chapter, whether added thereto before or after the effective date of this section, shows any lot or area within any particular zone, such zone shall extend to the center of every adjoining road or highway, provided that while such road or highway remains a public highway or a road used in a similar manner it may be so used. (Ord. 37 § 301, 1961)

§ 18.16.060. Property lines.

If a zone boundary so divides a lot that either or both portions of such lot created by the division are not in zone B-1 or B-2, and of such size and shape that no part of such portion is more than fifty feet from the zone boundary, then that portion or portions not in zones B-1 or B-2, and of such size and shape that no part of such portion is more than fifty feet from such zone boundary may be used for any purpose permitted in the other portion of the lot is:

  • A. Shown as a single lot on the final subdivision map which map was recorded in the office of the county recorder after the effective date of the zone boundary.

  • B. At all times since the recording of the final map, in undivided ownership. (Ord. 37 § 302, 1961)

§ 18.16.070. Setback map.

  • A. There is adopted the official setback map of the city as attached to the ordinance codified in this section and adopted by reference as if set forth fully herein. All lots or parcels of property shall have and maintain a setback or building line as shown on the map. No buildings or structures shall be constructed or maintained within any such setback area as shown on the map.

  • B. The map shall be maintained in the city offices and shall be duly certified by the city clerk. All amendments to the map shall be noted thereon with the date of the amendment and references to the amending ordinance.

  • C. The map is made a part of the zoning ordinance and may be amended by reference to the zoning ordinance and to this section.

  • (Ord. 37 § 416, 1961; Ord. 317 § 1, 1971)

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▸ Contents — San Dimas Zoning Code
San Dimas Zoning Code
  1. ▸ Title 18 — Zoning
    Overview
    1. Chapter 18.04 — GENERAL PROVISIONS
    2. Chapter 18.08 — DEFINITIONS
    3. Chapter 18.12 — DEVELOPMENT PLAN REVIEW
    4. Chapter 18.14 — WATER-EFFICIENT LANDSCAPES
    5. Chapter 18.16 — ZONING DISTRICTS, MAPS AND BOUNDARIES
    6. Chapter 18.20 — RESIDENTIAL ZONES GENERALLY
    7. Chapter 18.22 — DENSITY BONUS
    8. Chapter 18.24 — S-F SINGLE-FAMILY RESIDENTIAL ZONE
    9. Chapter 18.26 — DEVELOPMENT STANDARDS OVERLAY ZONE
    10. Chapter 18.28 — SF-A SINGLE-FAMILY AGRICULTURE ZONE
    11. Chapter 18.32 — SF-H SINGLE-FAMILY HILLSIDE ZONE
    12. Chapter 18.35 — SF-DR SINGLE-FAMILY DOWNTOWN RESIDENTIAL ZONE
    13. Chapter 18.38 — ACCESSORY DWELLING UNITS
    14. Chapter 18.40 — AFFORDABLE HOUSING OVERLAY ZONE
    15. Chapter 18.42 — MULTIPLE-FAMILY (MF) ZONE
    16. Chapter 18.44 — MULTIPLE-FAMILY THIRTY UNITS PER ACRE (MF-30) …
    17. Chapter 18.48 — MF-D MULTIPLE-FAMILY ZONE— DUPLEX
    18. Chapter 18.50 — DOWNTOWN SPECIFIC PLAN
    19. Chapter 18.52 — RPD RESIDENTIAL PLANNED DEVELOPMENT ZONE
    20. Chapter 18.64 — A-L LIGHT AGRICULTURAL ZONE
    21. Chapter 18.92 — C-H COMMERCIAL-HIGHWAY ZONE
    22. Chapter 18.96 — C-N COMMERCIAL-NEIGHBORHOOD ZONE
    23. Chapter 18.104 — CPO COMMUNITY PARKING OVERLAY ZONE
    24. Chapter 18.108 — SCENIC HIGHWAY OVERLAY ZONE
    25. Chapter 18.112 — P-H PRIVATE HORSE OVERLAY ZONE
    26. Chapter 18.116 — CONSERVATION OVERLAY ZONE
    27. Chapter 18.122 — MOBILE HOME PARK ZONE
    28. Chapter 18.124 — OS OPEN SPACE ZONE
    29. Chapter 18.128 — INDUSTRIAL ZONES
    30. Chapter 18.132 — PS PUBLIC/SEMIPUBLIC ZONE
    31. Chapter 18.136 — A-P ADMINISTRATIVE PROFESSIONAL ZONE
    32. Chapter 18.140 — C-G CREATIVE-GROWTH ZONE
    33. Chapter 18.142 — DEVELOPMENT STANDARDS FOR SPECIFIC LAND USES
    34. Chapter 18.150 — WIRELESS COMMUNICATION FACILITIES
    35. Chapter 18.152 — SIGNS
    36. Chapter 18.156 — VEHICLE PARKING AND STORAGE
    37. Chapter 18.162 — TREE PRESERVATION
    38. Chapter 18.164 — HILLSIDE DEVELOPMENT
    39. Chapter 18.168 — ALTERNATIVE ENERGY SYSTEMS
    40. Chapter 18.170 — ELECTRIC VEHICLE CHARGING STATIONS
    41. Chapter 18.172 — PUBLICLY OWNED PROPERTY
    42. Chapter 18.180 — FLOOD CONTROL
    43. Chapter 18.184 — HOME BASED BUSINESSES
    44. Chapter 18.186 — RESERVED
    45. Chapter 18.188 — RESERVED
    46. Chapter 18.190 — SEXUALLY ORIENTED BUSINESSES
    47. Chapter 18.192 — UNCLASSIFIED USES
    48. Chapter 18.194 — MARIJUANA AND MEDICAL MARIJUANA
    49. Chapter 18.196 — TEMPORARY USES
    50. Chapter 18.198 — RECYCLING FACILITIES, DONATION BOXES AND NON-…
    51. Chapter 18.200 — CONDITIONAL USE PERMITS
    52. Chapter 18.204 — VARIANCES
    53. Chapter 18.208 — ZONE CHANGES AND AMENDMENTS
    54. Chapter 18.212 — APPEAL PROCEDURES
    55. Chapter 18.500 — SPECIFIC PLAN NO. 2
    56. Chapter 18.502 — SPECIFIC PLAN NO. 3
    57. Chapter 18.504 — SPECIFIC PLAN NO. 4
    58. Chapter 18.508 — SPECIFIC PLAN NO. 6
    59. Chapter 18.510 — SPECIFIC PLAN NO. 7
    60. Chapter 18.512 — SPECIFIC PLAN NO. 8
    61. Chapter 18.514 — SPECIFIC PLAN NO. 9
    62. Chapter 18.516 — SPECIFIC PLAN NO. 10
    63. Chapter 18.518 — SPECIFIC PLAN NO. 11
    64. Chapter 18.520 — SPECIFIC PLAN NO. 12
    65. Chapter 18.522 — SPECIFIC PLAN NO. 13
    66. Chapter 18.526 — SPECIFIC PLAN NO. 16
    67. Chapter 18.528 — SPECIFIC PLAN NO. 17
    68. Chapter 18.532 — SPECIFIC PLAN NO. 20
    69. Chapter 18.534 — SPECIFIC PLAN NO. 21
    70. Chapter 18.536 — SPECIFIC PLAN NO. 22
    71. Chapter 18.538 — SPECIFIC PLAN NO. 23
    72. Chapter 18.540 — SPECIFIC PLAN NO. 24
    73. Chapter 18.542 — SPECIFIC PLAN NO. 25

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