Solar panels and EV chargers in Diamond Bar: the local rules

Each rule below links to the section of the Diamond Bar Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Diamond Bar's code says

Diamond Bar code What Diamond Bar's code adds
EV charger permit	The building official issues permits when the application meets the city checklist and laws; electronic applications and signatures accepted. Applies: Applies to electric vehicle charging stations. § 15.00.1700 · code text Consistent with Government Code § 65850.7, the building official shall implement an expedited administrative permit review process for electric vehicle charging stations, and adopt a checklist of all requirements with which electric vehicle charging stations shall comply with in order to be eligible for expedited review.
Solar permit process	Administrative, nondiscretionary review; a permit is issued when the application meets the checklist and standard plan; only one inspection. Applies: Applies to small residential rooftop solar systems. § 15.04.060 · code text For an application for a small residential rooftop solar energy system that meets the requirements of the city's checklist and standard plan, the building department shall issue a non-discretionary permit within three business days of the filing of the application and payment of the permit fee. Applications may be sent by email, the city website, or fax; electronic signatures are accepted. Applies: Applies to small residential rooftop solar systems. § 15.04.050 · code text Electronic submittal of the required application and documents via email, the city's website, or facsimile shall be made available to all small residential rooftop solar energy system permit applicants.
Review time	The permit is issued within 3 business days. Applies: Applies to small residential rooftop solar applications that meet the city checklist and standard plan, counted from filing and fee payment. § 15.04.060 · code text For an application for a small residential rooftop solar energy system that meets the requirements of the city's checklist and standard plan, the building department shall issue a non-discretionary permit within three business days of the filing of the application and payment of the permit fee. A correction notice is sent within 3 business days of filing and fee payment. Applies: Applies to incomplete applications for small residential rooftop solar systems. § 15.04.060 · code text If an application for a small residential rooftop solar energy system is deemed incomplete, a written correction notice detailing all deficiencies in the application and any additional information or documentation required to be eligible for expedited permitting shall be sent to the applicant for resubmission, within three business days of the filing of the application and payment of the permit fee. An inspection is scheduled within 2 business days of a request. Applies: Applies to small residential rooftop solar systems. § 15.04.060 · code text An inspection will be scheduled within two business days of a request.

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Frequently asked questions

Do I need a permit for solar panels or an EV charger in Diamond Bar?

Diamond Bar's code: Administrative, nondiscretionary review; a permit is issued when the application meets the checklist and standard plan; only one inspection. (Applies to small residential rooftop solar systems.) (§ 15.04.060); The building official issues permits when the application meets the city checklist and laws; electronic applications and signatures accepted. (Applies to electric vehicle charging stations.) (§ 15.00.1700).

Solar panels and EV chargers in Diamond Bar

What Diamond Bar's code says

Who this affects

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