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Title 18 — Zoning

Chapter 18.26 — DEVELOPMENT STANDARDS OVERLAY ZONE

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

§ 18.26.010. Purpose.

The purpose of this chapter is to establish development standards and certain restrictions to allow for a variety in housing while striving to maintain the overall character of the underlying residential zones. It is intended to supplement the standards in the underlying single-family zone where deemed necessary, and appropriate to ensure development compatible with the area. (Ord. 1255 § 1, 2017)

§ 18.26.020. Development standard overlay zone designated.

The development standards overlays shall be designated on official zoning maps, as follows:

  • A. Whenever a development standards overlay designation is placed on property or properties, those properties shall be subject to the provisions of the specified development standards overlay zone and any additional standards set forth herein in addition to the provisions of the underlying zone. When there may be conflicts, the overlay zone standards shall prevail.

  • B. Method of Application. The abbreviation "DS" shall be appended on the base zoning district on the official zoning map. In addition, a number may be attached to the overlay zone referring to any special standards developed in this chapter. The DS overlay zone may only be overlaid on property zoned primarily for single-family use but shall not be used for any specific plans.

  • (Ord. 1255 § 1, 2017)

§ 18.26.030. Development standard overlay zone created.

Each development standard overlay zone created herein may have differing development standards to facilitate implementation of the additional standards.

  • A. Development standard overlay zone No. 1 (DS-1) is created as follows:

    1. Geographic Area. Bounded by San Dimas Avenue on the east, Allen Avenue on the north, and generally bounded by Cataract Avenue to the west and Gladstone Street to the south and as further depicted on the official zoning map.

    2. Specific Objectives. In addition to the determination that the plan complies with the purposes of the development standard overlay zone, the following specific findings shall be satisfied by the plan:

      • a. The overall plan should be comprehensive.

      • b. In relation to the scope and complexity of the development, its size should be such as to affect an integral land-planning unit and provide for adequate open spaces, circulation, off-street parking and pertinent development amenities.

      • c. It promotes quality site layout and energy-efficient development.

      • d. Diverse functional elements should be well integrated, properly oriented, and properly related to the topographic and natural features of the site.

      • e. It promotes infill development that is consistent in character and scale with established neighborhoods.

      • f. Architectural unity and harmony within the development and with the surrounding community should be attained.

    3. One-Story Limitation and Building Height.

      • a. A minimum of fifteen percent of the parcels created for development shall be limited to one-story structures. In addition, no building or structures erected on these parcels shall have a height greater than twenty feet. Lots with such restrictions shall be determined at time of parcel or tract map review, and shall be so designated on the recorded map and identified on the overlay map, Exhibit A.

      • b. Parcels with said one-story limitation, shall have maximum site coverage of no more than forty percent of the total lot area, including covered patios, trellises, garages, and other covered structures.

    4. Floor Area. The maximum size for any two-story residential dwelling unit shall be a maximum of four thousand square feet gross floor livable area. Total lot coverage shall not exceed thirty-five percent.

    5. Street B Cul-de-Sac Standards. Parcels located on the northern portion of the cul-de-sac, as designated on Exhibit A, shall be subject to the following standards:

      • a. All structures shall be set back from the front property line at a distance to allow a minimum of three on-site parking spaces within the driveway.

      • b. Garages that are constructed at the front of the property with a street-facing garage door shall be limited to a width not to exceed twenty-four feet and only provide two parking spaces. A third garage space may be permitted, but only as a tandem space. Driveway width shall be limited to the width of the garage until an application is submitted for RV parking in the twelve-foot side yard setback adjacent to the garage.

EXHIBIT A

==> picture [400 x 465] intentionally omitted <==

  • B. Development standard overlay zone No. 2 (DS-2) is created as follows:

    1. Geographic Area. As demonstrated in the exhibit below and as further depicted on the official zoning map.

==> picture [463 x 399] intentionally omitted <==

  1. Specific Objectives. In addition to the determination that the plan complies with the purposes of the development standard overlay zone, the following specific findings shall be satisfied by the plan:

    • a. It promotes infill development that is consistent in character and scale with established neighborhoods.

    • b. It promotes quality site layout.

    • c. It promotes architectural unity and harmony within the development and with the surrounding community.

  2. One-Story Limitation and Lot Coverage Increase. Parcels within development standards overlay zone No. 2 which are adjacent to Walnut Avenue shall be limited to one story in height. Properties limited to one story in height are permitted an increase in lot coverage from thirty-five percent to forty percent.

  3. Floor Area Ratio (FAR). In addition to the maximum allowed lot coverage of thirty-five percent, the maximum floor area ratio for any two-story residential dwelling unit shall be forty-five percent, excluding the first 400 square feet of the garage area. Porches, patio covers, gazebos, and other similar unenclosed structures shall not be included in the floor area ratio calculation.

  4. Rear Yard Setback Requirements. All parcels except those which are adjacent to Walnut Avenue shall incorporate a minimum rear yard setback of fifteen feet from the dwelling unit

to the rear lot line. Parcels adjacent to Walnut Avenue, which are one story in height, shall incorporate a minimum rear yard setback of twelve feet. Accessory structures including detached unenclosed patio covers and swimming pools may encroach into the fifteen-foot or twelve-foot rear yard setbacks to a minimum required setback of five feet.

  1. Access Restrictions. Vehicular access shall be prohibited from Moore Lane. All vehicular access shall be provided from a public street.

  2. Presentation to Moore Lane. Improvements on lots abutting Moore Lane shall be designed in a manner which creates a pleasing aesthetic presentation to Moore Lane to the satisfaction of the development services director.

  • (Ord. 1255 § 1, 2017; Ord. 1263 § 1, 2018)

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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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