Los Angeles, CA Accessory Structures: ADU Rules (2026)
ADU rules in Los Angeles, CA, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.
Key Facts
- Approval type
- Ministerial (no discretionary review permitted)
- Decision deadline
- 60 days from receipt of complete application (existing dwelling on lot)
- Review scope
- Limited to objective development standards only
Summary
ADU applications in Los Angeles require no discretionary approval; the City must issue a ministerial decision based solely on objective standards within 60 days of receiving a complete application when a dwelling already exists on the lot.
(2) An ADU which complies with this subdivision shall not require a discretionary planning approval. The ADU project shall be reviewed in a ministerial and administrative manner, limited to only considering the project's compliance with the applicable objective standards. An application to create an ADU shall be acted upon within 60 days from the date the City receives a completed application if there is an existing single-family or multi-family dwelling on the lot. If the permit application to create an ADU unit is submitted with a permit application to create a new single-family dwelling on the lot, the City may delay acting on the permit application for the ADU until the City acts on the permit application to create the new single-family dwelling. If the applicant requests a delay, the 60-day time period shall be tolled for the period of the delay.
Full Breakdown
LAMC § 12.22 A.33(c)(2) prohibits the City from requiring any discretionary planning approval, such as a conditional use permit or variance, for an ADU that complies with the subdivision. Review is limited to objective, non-subjective development standards. The 60-day clock starts when the City receives a complete application, provided a single-family or multi-family dwelling already exists on the lot. If the ADU permit is submitted simultaneously with a permit for a new primary dwelling, the City may defer acting on the ADU permit until it acts on the primary dwelling permit; the applicant may also request a delay, during which the 60-day period is tolled. This ministerial pathway applies to both attached and detached ADUs.
Violations & Fines
Requiring a conditional use permit, variance, or other discretionary approval for a code-complying ADU; failing to act on a complete ADU application within 60 days when an existing dwelling is present on the lot.
Frequently Asked Questions
Can my neighbor appeal a permit for my ADU?
What if I am also building a new primary home at the same time?
Sources & Official References
Other rules in Los Angeles
How Los Angeles compares: Easiest Cities to Build an ADU·California rules heatmap·Compare Los Angeles to another location·View the California accessory structures overview
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ADU Rules in Nearby Cities
How other cities in Los Angeles County handle adu rules.