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Rohnert Park, CA Accessory Structures: ADU Owner Occupancy (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Trigger
Applies only when JADU shares sanitary facilities with the house
Who must live on-site
Owner in the primary dwelling or the JADU
Exempt owners
Government agencies, land trusts, housing organizations, § 17.08.040(F)(5)
Recorded
Deed restriction required before certificate of occupancy, § (F)(6)
Resale
New owner must remove JADU or restore compliance

Summary

Rohnert Park requires the property owner to live in either the primary home or the junior accessory dwelling unit whenever the JADU shares sanitary facilities with the main house. RPMC § 17.08.040(F)(5) exempts only government agencies, land trusts and housing organizations from this owner-occupancy condition, and the city records it as a deed restriction before occupancy.

5.Owner occupancy shall be required for each JADU that has shared sanitary facilities with the primary dwelling. The owner shall reside either in the primary dwelling unit or the newly created JADU. Owner-occupancy shall not be required if the owner is another governmental agency, land trust, or housing organization.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 51 Update 2).

Full Breakdown

040 ties owner-occupancy specifically to shared sanitary facilities: owner occupancy shall be required for each JADU that has shared sanitary facilities with the primary dwelling, and the owner may satisfy the rule by living in either the primary dwelling or the newly created JADU, not necessarily the JADU itself. The exemption is narrow: owner-occupancy is waived only when the owner is a governmental agency, land trust or housing organization, not for an individual owner who simply prefers not to live on site. The requirement is enforced through subsection (F)(6), which requires every JADU to carry a recorded deed restriction, approved by the city and recorded before the certificate of occupancy issues, restating that shared-facility JADUs require owner occupancy of either the primary dwelling or the JADU, restricting the JADU to the size and attributes the city approved, and prohibiting sale of the JADU separate from the primary dwelling with notice to future buyers about enforcement of the restriction.

A companion restriction in subsection (F) requires any subsequent buyer of the property to either remove the JADU, including obtaining all necessary permits, or demonstrate compliance with the owner-occupancy requirement, again with the same exemption for governmental agencies, land trusts and housing organizations. Because the JADU rules sit inside the same section as the city's general ADU standards, a JADU with fully separate, non-shared bathroom and kitchen facilities is not automatically subject to this particular owner-occupancy condition, since the trigger is specifically the sharing of sanitary facilities with the primary unit.

Violations & Fines

Selling or occupying a shared-facility JADU without owner occupancy of either the primary dwelling or the JADU breaches the recorded deed restriction required by RPMC § 17.08.040(F)(6) as well as subsection (F)(5) itself. A new owner who fails to either remove the JADU with proper permits or restore compliance with the occupancy requirement is in violation of the recorded restriction and subject to the code enforcement remedies under subsection (K).

Frequently Asked Questions

Does the owner have to live in a Rohnert Park JADU?
Only if the JADU shares sanitary facilities with the primary dwelling. RPMC § 17.08.040(F)(5) then requires the owner to live in either the primary home or the JADU itself; a JADU with fully separate bathroom and kitchen facilities is not automatically subject to this condition.
Who is exempt from Rohnert Park's JADU owner-occupancy rule?
Governmental agencies, land trusts and housing organizations under RPMC § 17.08.040(F)(5). Any other property owner whose JADU shares sanitary facilities with the primary dwelling must reside in either the primary unit or the JADU, and the requirement is recorded against the title as a deed restriction under subsection (F)(6).
What happens if a Rohnert Park property with a JADU is sold?
The new owner must either remove the JADU, including obtaining all required permits, or demonstrate compliance with the owner-occupancy requirement under RPMC § 17.08.040(F). The same exemption for governmental agencies, land trusts and housing organizations applies to the new owner as it did to the seller.

Sources & Official References

Other rules in Rohnert Park

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