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Title 22 — DEVELOPMENT CODE[[1]]

§ 22.06

Diamond Bar Zoning Code · 2026-06 edition · updated 2026-07-25 · Diamond Bar

Sec. 22.06.040. - Zoning district regulations.

(a)

Purpose. Chapters 22.08 through 22.14 determine which land uses are allowed in each zoning district established by section 22.06.020 (zoning districts established), what land use entitlement is required to establish each use, and the basic development standards that apply to allowed land uses in each zoning district.

(b)

Zoning consistency matrix. Subsequent to the adoption of this Development Code, the City of Diamond Bar's zoning map shall be revised to reflect consistency with the general plan land use map. In the interim period, until the revised map is adopted by the council, the Zoning Consistency Matrix (Table 2-2) is adopted applying equivalent Development Code standards to the city's existing zoning districts.

(c)

Determination of allowable land uses and permit requirements. The uses of land allowed by this Development Code in each zoning district are identified in Tables 2-3, 2-5, 2-6 and 2-8 of this chapter as being:

(1)

Permitted subject to compliance with all applicable provisions of this Development Code, subject to first obtaining a zoning clearance (chapter 22.46), and any building permit or other permit required by the Municipal Code. These are shown as "P" uses in the tables;

(2)

Allowed subject to the approval of a minor conditional use permit (chapter 22.56), and shown as "MUP" uses in the tables;

(3)

Allowed subject to the approval of a conditional use permit (chapter 22.58), and shown as "CUP" uses in the tables;

Land uses that are not listed in the tables or are not shown in a particular zoning district are not allowed, except as otherwise provided by section 22.04.020(h) (Rules of interpretation—Allowable uses of land), or section 22.02.030 (Exemptions from development and land use approval requirements).

(d)

Standards for parcels with multiple zoning districts. The following standards apply to the proposed development or subdivision of parcels that are or may be designated with more than one zoning district:

(1)

Existing parcel in multiple zoning districts. Where an existing parcel is zoned in two or more zoning districts, each portion of the parcel in a separate district shall be developed/used in compliance with the requirements of the applicable district.

(2)

Parcels proposed for consolidation. Where a lot line adjustment or tentative map application proposes the consolidation of two or more parcels, so that a single parcel would be covered by two or more zoning districts, the application for adjustment or map approval shall be accompanied by an application for rezoning the lot into a single zoning district, in compliance with chapter 22.70 (General Plan, Development Code, and Zoning Map Amendments).

(e)

Conflicts between provisions. Rules for resolving conflicts between different Development Code provisions may be found in section 22.04.020(f) (Rules of interpretation—Conflicting requirements).

TABLE 2-2

ZONING CONSISTENCY MATRIX

General Plan Designation Existing Zoning District Applicable Development
Code Standards
Agriculture (AG)
Max 1 DU/AC
Light Agriculture A-1
Heavy Agriculture A-2
Agriculture (AG)
Rural Residential (RR)
Max 1 DU/AC
R-1 40,000
R-1 20,000
Rural Residential (RR)
Low Density Residential (RL)
Max 3 DU/AC
RPD 20,000
R-1 15,000
R-1 10,000
RPD 10,000
R-A 10,000
R-1 9,000
Low Density Residential (RL)
R-1 8,500
PA-2 /SP
Low Medium Residential (RLM)
Max 5 DU/AC
R-1 8,000
RPD 8,000
R-A 8,000
R-1 7,500
R-1 6,000
R-2
Low Medium Residential (RLM)
Medium Density Residential (RM)
12 DU/AC
R-3 up to 12U Medium Density Residential (RM)
Medium High Density Residential
(RMH)
16 DU/AC
R-3 up to 16U Medium High Density Residential
(RMH)
High Density Residential (RH)
20 DU/AC
R-3, R-3, to 20U High Density Residential (RH)
General Commercial (C)
Max 1.0 FAR
Commercial Planned
Development (CPD)
Restricted Business Zone (C-1)
Commercial Highway Zone (C-H)
Commercial Recreation Zone (C-
R)
Neighborhood Commercial (C-1)
General Commercial (C)
Max 1.0 FAR
Neighborhood Business Zone (C-
2)
Community Commercial (C-2)
General Commercial (C)
Max 1.0 FAR
Unlimited Commercial Zone (C-3) Regional Commercial (C-3)
Ofce Professional (OP)
Max 1.0 FAR
Commercial Manufacturing Zone
(CM)
Ofce Professional (OP) or Ofce
Business Park (OB) additional
uses for Gateway Corporate
Center
Light Industrial (1)
Max 1.0 FAR
Manufacturing-Industrial Planned
Zone (MPD)
Light Manufacturing Zone (M-1)
Restricted Heavy Manufacturing
Zone (M-1.5)
Light Industry (I)
Open Space Open Space Open Space/Conservation (OS)

(Ord. No. 02(1998), § 2, 11-3-98; Ord. No. 02(2000), 4-4-00; Ord. No. 02(2001), § 1, 11-6-01)

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