Pasadena, CA Accessory Structures: ADU Owner Occupancy (2026)
Key Facts
- Applies to
- Junior ADUs sharing sanitation with main house
- Owner-occupancy
- Required in main house or Junior ADU
- Exemption
- Government agency, land trust, housing organization
- Recorded covenant
- Required before building permit issuance
- Junior ADU size cap
- 500 square feet maximum
Summary
Pasadena requires the property owner to live on-site when a Junior Accessory Dwelling Unit shares a bathroom or kitchen sanitation facility with the main house. Section 17.50.275.E.3 waives that rule only if the owner is a government agency, land trust, or housing organization.
3.Owner Occupancy. For Junior ADUs which share a sanitation facility, either the primary unit or the Junior ADU shall be owner-occupied. Owner-occupancy shall not be required if the owner is another governmental agency, land trust, or housing organization.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 79 Update 2).
Full Breakdown
E. f). 3 draws a line based on plumbing: if the Junior ADU shares its sanitation facilities, meaning the bathroom, with the primary house rather than having its own, either the main house or the Junior ADU itself must be occupied by the property owner. The exception in the same subsection lifts the owner-occupancy requirement only when the owner of record is a governmental agency, a land trust, or a housing organization rather than an individual homeowner. 5 requires the owner to record a covenant, in a form the city approves, putting future buyers on notice of the occupancy and other requirements running with the property.
2, the Director must approve, conditionally approve, or deny the application within the timelines set by Government Code Sections 66317, 66320, and 66335, so the owner-occupancy covenant is checked at that ministerial stage rather than through a discretionary hearing.
Violations & Fines
Building a shared-sanitation Junior ADU without recording the required owner-occupancy covenant, or later leaving both the primary residence and the Junior ADU occupied by non-owner tenants when the sanitation facilities are shared, breaches Section 17.50.275.E.3 and E.5 and exposes the property to code enforcement action and potential loss of the Junior ADU's legal status.
Frequently Asked Questions
Do I have to live in my house if I build a Junior ADU in Pasadena?
Is there any exception to Pasadena's Junior ADU owner-occupancy rule?
What paperwork does Pasadena require for a shared-sanitation Junior ADU?
Sources & Official References
Other rules in Pasadena
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ADU Owner Occupancy in Nearby Cities
How other cities in Los Angeles County handle adu owner occupancy.