Building in city of Diamond Bar :

The Development Code categorizes and governs the uses of land and buildings within the City of Diamond Bar to carry out the policies of the Diamond Bar general plan. This Development Code is also enacted to safeguard and advance the general welfare of people, preserve and improve the city’s aesthetic character, and protect and promote public health.

Before the planned use is built, any land use permit or other permission needed by this Development Code shall be acquired.

The following are the goals of each residential zoning district :

The RR (rural residential) zoning district designates hillside regions for rural living, including livestock rearing, with supporting ancillary structures.

The RL (low-density residential) area is primarily designed for lots that have already been constructed with detached single-family homes.

The RLM (low/medium density residential) district is primarily designed for already-developed, subdivided neighborhoods with detached single-family homes.

The RMH (medium/high-density residential) district is designed for locations where townhouses, condominiums, apartments, and other multifamily residential complexes are already under construction or planned, as well as mobile home parks.

The RH (high-density residential) district is designed for locations with high-density mobile home parks, condominiums, and apartment buildings, both current and future.

The RH-30 (high-density residential) area is designed for high-density apartment and condominium complexes.

The following are the goals of each commercial and industrial zoning district:

The OP (office, professional) district is designated for locales suitable for office-based working conditions for general, administrative, and professional offices and comparable and related compatible uses.

The OB (office, business park) district is designed for locations suitable for more substantial, headquarters-style office projects, business park developments, and related and complementary uses.

The CO (commercial office) district is designed for locations suitable for a variety of office, retail, and service-related uses, with office-type buildings serving as the primary uses.

The C-1 (neighborhood commercial) district designates locations suitable for shops, workplaces, and other services that cater to the requirements of the local populace daily.

The C-2 (community commercial) district is assigned to locations suitable for various retail, and service uses primarily designed to meet the requirements of Diamond Bar residents.

The C-3 (regional commercial) district designates locations suitable for extensive commercial operations that serve local inhabitants and enterprises.

The I (light industry) district is used to designate regions suitable for light industrial/manufacturing purposes, such as research and development, office-based industrial applications in an “industrial park” environment, business support services, and commercial uses needing bigger sites than are offered in the commercial zoning districts.

The zoning map is found in the Knowledge Center.

In Diamond Bar, building permits are necessary to establish, alter, remove, or repair any commercial or residential facility. This covers all types of construction, including brand-new buildings, fences, fireplaces, and signs.

The following permits are usually needed for new construction:

Electrical licenses are required to install new electrical service equipment, move or expand existing electrical service, and connect fixed appliances and equipment.

Mechanical licenses are required for any additions, replacements, repairs, or modifications to mechanical systems in buildings. This involves installing sprinkler systems, propane tanks, gas lines, and pipes for other dangerous substances.

Plumbing permits are required for all plumbing work, such as installing drains, water mains, sewage disposal systems, and related fixtures and appliances.

The design standards were developed to help Diamond Bar achieve a high standard of aesthetically pleasing and useful design. To protect and enhance the city’s distinctive character and assets and to ensure the stability and growth of public and private investment in land and improvements, the guidelines are to be used in conjunction with development standards when putting the City’s development review process into practice. These criteria are meant to encourage development that respects the site’s and the community’s unique physical and environmental qualities and that showcases excellent site planning and design.


City of Diamond Bar – Planning Department:

The Planning Division drafts, administers, and evaluates the City’s zoning and subdivision rules and examines development projects for compliance. It is entrusted with creating and executing the General Plan’s duties. In addition to providing the community with long- and short-term planning to coordinate and monitor growth and development, it guarantees that all projects comply with the California Environmental Quality Act.


City of – Building and Safety Department:

The Building and Safety Division is responsible for protecting public health and safety through enforcing California Building Codes and other related regulations. This section offers permit issuing, construction inspection services, and assessment of plans, drawings, and documents for conformity with building codes (plan check).


City of Diamond Bar – Public Works Department:

The Public Works Department offers details on basic engineering concerns on city roadways, public rights-of-ways, the city’s capital projects, utilities, traffic-related issues, and more. The Department is in charge of the ongoing upkeep of all properties that are held by the government, including the following:

  • Curbs
  • Gutters
  • Landscaping
  • Sewers/storm drains
  • Sidewalks
  • Signs
  • Streetlights
  • Streets
  • Traffic signals


General Area Summary: 

Diamond Bar is a city in eastern Los Angeles County, California.

Diamond Bar, which is situated near the intersection of the Pomona and Orange freeways, is mostly a residential area with commercial malls scattered all over the place. Brea, Walnut, Chino Hills, Rowland Heights, Pomona, City of Industry, and South Diamond Bar are the neighborhoods around it. Diamond bar has a population of over 54,900.


Contact Information:

The Community Center is at 21810 Copley Drive, Diamond Bar California 91765, or you can call them on (909) 839-7000.