Diamond Bar Municipal Code § 22.10.040 Commercial/industrial district general development standards

This chapter provides regulations for development and new land uses in the commercial and industrial zoning districts established by section 22.06.020 (Zoning districts established).

(Ord. No. 02(1998), § 2, 11-3-98)

The purposes of the individual commercial and industrial zoning districts and the manner in which they are applied are as follows.

(1) OP (office, professional) district. The OP zoning district is intended for areas appropriate for office-based working environments for general, professional, and administrative offices, and similar and related compatible uses. The allowable floor area ratio for nonresidential development shall be from 0.25 to 1.00. The OP zoning district is consistent with the professional office land use category of the general plan.

(2) OB (office, business park) district. The OB zoning district is intended for areas appropriate for larger scale, headquarters-type office facilities and business park developments, and similar and related compatible uses. The allowable floor area ratio for nonresidential development shall be from 0.25 to 1.00. The OB zoning district is consistent with the professional office land use category of the general plan.

(3) CO (commercial office) district. The CO zoning district is intended for areas appropriate for a diverse mix of office, retail, and service-related uses, with office-type facilities being the primary uses. The allowable floor area ratio for nonresidential development shall be from 0.25 to 1.00. The CO zoning district is consistent with the commercial office land use category of the general plan.

(4) C-1 (neighborhood commercial) district. The C-1 zoning district is applied to areas appropriate for retail sales, offices, and services serving the daily needs of nearby residents. The allowable floor area ratio for nonresidential development shall be from 0.25 to 1.00. The C-1 zoning district is consistent with the general commercial land use category of the general plan.

(5) C-2 (community commercial) district. The C-2 zoning district is applied to areas appropriate for a wide range of retail shopping and service uses, primarily intended to serve the needs of Diamond Bar residents. The allowable floor area ratio for nonresidential development shall be from 0.25 to 1.00. The C-2 zoning district is consistent with the general commercial land use category of the general plan.

(6) C-3 (regional commercial) district. The C-3 zoning district is applied to areas appropriate for large-scale commercial uses serving residents and businesses within the region. The allowable floor area ratio for nonresidential development shall be from 0.25 to 1.00. The C-3 zoning district is consistent with the general commercial land use category of the general plan.

(7) I (light industry) district. The I zoning district is applied to areas appropriate for light industrial/manufacturing uses including research and development, office-based industrial uses in an "industrial park" setting, business support services, and commercial uses requiring larger sites than are available in the commercial zoning districts. The allowable floor area ratio for nonresidential development shall be from 0.25 to 1.00. The I zoning district is consistent with the light industrial land use category of the general plan and intended to accommodate the need for emergency shelter and single-room occupancy housing identified in the city's housing element.

(Ord. No. 02(1998), § 2, 11-3-98; Ord. No. 04(2013), § 1, 6-18-13)

Tables 2-5 and 2-6 identify the uses of land allowed by this Development Code in the commercial and industrial zoning districts, and the land use permit required to establish each use, in compliance with section 22.06.040 (Zoning district regulations).

Note: Where the last column in the tables ("See Standards in Section") includes a section number, the regulations in the referenced section apply to the use; however, provisions in other sections of this Development Code may also apply.

TABLE 2-5 ALLOWED USES AND PERMIT REQUIREMENTS FOR OFFICE ZONING DISTRICTS

KEY TO PERMIT REQUIREMENTS

Notes:

(1) See article VI for definitions of each of the land uses listed.

(2) See chapter 22.48 for development review requirements for all uses.

(3) Radio and television antennas and wireless telecommunications antenna facilities shall be permitted pursuant to the standards contained within Ordinance No. 04(1999).

(4) Use allowed only when accessory to an office use.

(5) Shall be a minimum of 150 feet, measured from the nearest property lines, from any public or private elementary, middle or high school as defined by Education Code Section 49430 or any equivalent private school performing the function of such schools.

TABLE 2-6 ALLOWED USES AND PERMIT REQUIREMENTS FOR COMMERCIAL/INDUSTRIAL ZONING DISTRICTS

KEY TO PERMIT REQUIREMENTS

Notes:

(1) See article VI for definitions of each of the land uses listed.

(2) See chapter 22.48 for development review requirements for all uses.

(3) Shall be a minimum of 150 feet, measured from the nearest property lines, from any public or private elementary, middle or high school as defined by Education Code Section 49430 or any equivalent private school performing the function of such schools.

(4) Radio and television antennas and wireless telecommunications antenna facilities shall be permitted pursuant to the standards contained within Ordinance No. 04(1999).

(5) Educational classes/training programs as the primary use shall be limited to the second floor and above with approval of a CUP. Ancillary classes in conjunction with a permitted use shall require a CUP and be limited to 15 percent of a separately demised space occupied by a single tenant or 750 square feet, whichever is less.

(6) Transitional or supportive housing developments located in the industrial zoning district shall be configured as, and are subject to the standards and restrictions that apply to, single-room occupancy housing. A supportive housing development as described in section 22.42.170(b) is a permitted use in the industrial zoning district subject to ministerial zoning clearance and/or plot plan review; other transitional or supportive housing developments located in the industrial zoning district require conditional use permit approval and are subject to the same permitting requirements as a single-room occupancy housing development.

(7) A CUP shall be required for studios that offer instruction.

(Ord. No. 02(1998), § 2, 11-3-98; Ord. No. 04(1999), § 2, 3-2-99; Ord. No. 02(2000), 4-4-00; Ord. No. 02(2001), § 3, 11-6-01; Ord. No. 06(2002), §§ 1, 2, 5-7-02; Ord. No. 07(2003), 12-2-03; Ord. No. 04(2005), § B, 3-15-05; Ord. No. 06(2008), § B, 11-18-08; Ord. No. 01(2010), §§ 1, 2, 1-19-10; Ord. No. 02(2010), §§ 1, 2, 2-2-10; Ord. No. 04(2012), §§ 1—6, 4-17-12; Ord. No. 04(2013), § 2, 6-18-13; Ord. No. 05(2013), 7-16-13; Ord. No. 07(2016), §§ 1, 2, 11-1-16; Ord. No. 03(2024), §§ 4, 5, 7-16-24; Ord. No. 01(2026), § 1, 1-20-26)

Subdivisions, new land uses and structures, and alterations to existing land uses and structures, shall be designed, constructed, and/or established in compliance with the requirements in Table 2-7, in addition to the applicable development standards (e.g., landscaping, parking and loading, etc.) in article III (Site Planning and General Development Standards).

TABLE 2-7 COMMERCIAL/INDUSTRIAL DISTRICT GENERAL DEVELOPMENT STANDARDS

Notes:

(1) Minimum area for parcels proposed in new subdivisions, except as otherwise provided by section 22.08.050 (Minimum lot area). Commercial condominium or planned development projects may be subdivided with smaller parcel sizes for ownership purposes, with the minimum lot area requirement determined through the subdivision review process, provided that the overall development site complies with the lot area requirements of this chapter.

(2) A project may be granted FAR above the minimum, up to the maximum shown, at the discretion of the review authority based on amenities provided by the project as provided in section 22.16.070 (Open space for commercial projects).

(3) Maximum allowable height for structures. See section 22.16.060 (Height measurement and height limit exceptions).

(4) Projects located within the Gateway Corporation Center are subject to any additional development standards contained with the Gateway Corporate Center Design Guidelines.

(Ord. No. 02(1998), § 2, 11-3-98)

All land uses proposed in the I (light industry) zoning district shall be operated and maintained so as to not be injurious to public health, safety or welfare, and shall comply with the following standards:

(1) Air contaminants. Every use shall comply with rules, regulations and standards of the South Coast Air Quality Management District (SCAQMD). An application for a use, activity or process requiring SCAQMD approval to construct or operate must file a copy of the permit with the director, prior permit issuance or commencing the activity.

(2) Glare and heat. No direct or sky-reflected glare or heat, whether from floodlights or from high temperature processes (including combustion or welding or otherwise) shall be visible or felt at the property line.

(3) Ground vibration. No approved land use shall generate ground vibration perceptible without instruments at any point along or outside of the property line of the use, except for motor vehicle operations.

(4) Hazardous materials. All development shall meet the requirements of the county's urban stormwater discharge permit.

(5) Noise. No approved land use shall generate noise levels that exceed the standards and regulations of the noise control ordinance.

(6) Odor. No approved land use shall generate or emit any obnoxious odor or fumes perceptible at the property line.

(Ord. No. 02(1998), § 2, 11-3-98)