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Title 18 — Zoning›Chapter 18.504 — SPECIFIC PLAN NO. 4

Article I — General Provisions

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

§ 18.504.005. Definitions.

Equestrian Area. The "equestrian area" is defined as the area designated as E or Equestrian Paddocks on Exhibit C. The only lots where the equestrian area is present are those lots designated as "E" lots on Exhibit C.

"E" Lots. The term "E" lots refers to lots where equestrian uses may be permitted, as noted on Exhibit B. The only portion of "E" lots that may be improved with equestrian uses is the equestrian area.

Residential Development Area. The "residential development" portion of lots, in this chapter, means the portion designated in Exhibit C for residential uses. The residential development portion of the lot is the only portion of the lot that permits residential structures.

Scenic Easement. The "scenic easement" area means the portion of the lot designated "D" on Exhibit C. The scenic easement area is limited to native landscape, temporary irrigation and paved walkways.

Type A, Type B and Type C Lots. Type A, Type B and Type C lots are designated in Exhibit B and are defined in Section 18.504.110 . (Ord. 1137, Exh. A, 2003)

§ 18.504.010. Location.

Specific Plan No. 4 applies to the area located west of Valley Center Avenue and north of Walnut Creek Regional Wilderness Park. Exhibit B depicts the specific plan area. (Ord. 1137, Exh. A, 2003)

§ 18.504.020. Purpose and intent.

  • A. The purpose of Specific Plan No. 4 is to provide for the classification and development of parcels of land as coordinated, comprehensive projects so as to take advantage of the superior environment that will result from large-scale community planning.

  • B. The regulations established by this chapter are intended to allow a diversity of housing types and development standards created specifically for the project area while ensuring substantial compliance with the spirit, intent and provisions of this code.

  • C. Alternative development standards have been incorporated in this chapter in return for development sensitivity and increased amenities to serve the inhabitants of this and surrounding community areas.

  • D. Development standards are proposed to achieve the following objectives:

    1. To minimize the alteration of existing landforms;

    2. To minimize the intrusion of man-made structures into the Walnut Creek County Regional Park viewshed;

    3. To conserve the scenic qualities of the area;

    4. To provide an enriched residential environment with aesthetic cohesiveness, harmonious massing of structures, and interfacing of open space through the utilization of superior land planning and architectural design.

  • (Ord. 1137, Exh. A, 2003)

§ 18.504.030. General notes.

  • A. Unless otherwise specified, all development within Specific Plan No. 4 shall comply with this code.

  • B. Terms used in this chapter shall have the same meaning as defined in this code, unless otherwise defined in this chapter.

  • C. Any details or issues not specifically covered by this chapter shall be subject to the regulations of this code.

  • D. All references in this chapter relate to ordinances of this code currently written unless expressly provided to the contrary. In the event that any condition or term set forth in this chapter is declared illegal or unenforceable, the other terms and conditions shall remain in full force and effect to the full extent permitted by the law.

  • (Ord. 1137, Exh. A, 2003)

§ 18.504.040. Development plan—Review and disposition.

  • A. Unless otherwise provided, before any grading or building is erected on any lot or parcel in the Specific Plan No. 4 area, a development plan shall be submitted for review and approval in accordance with the process outlined in Chapter 18.12 of this title.

  • B. The above bodies, in approving any lot or lots in Specific Plan No. 4, shall consider the following:

    1. The proposed improvements will maintain or enhance the existing character and purpose of Specific Plan No. 4.

    2. The proposed improvements are in conformity with the viewshed area from the Walnut Creek Wilderness Park.

    3. The house and appurtenances are sited in a manner that minimizes visual impact and disturbance to the natural terrain.

  1. The architectural character, style and use of materials harmonize with the natural setting. (Ord. 1137, Exh. A, 2003)

§ 18.504.045. Density.

The total number of residential lots permitted is one hundred ninety-six. No lots established by this specific plan may be further subdivided.

(Ord. 1137, Exh. A, 2003)

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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
      Overview
      1. Article I — General Provisions
      2. Article II — Area 1
      3. Article III — Area 2
    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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