ADU Regulations in Rohnert Park, California (2026)

Regulations at a glance

Local rules & notes

Overly Restrictive JADU Kitchen Requirements: The city attempted to limit JADU kitchens to 120V appliances and 1.5-inch waste lines; HCD mandated removal of these restrictions to align with more lenient state standards. 60-Day Shot Clock Language Correction: The city's ordinance used the term 'considered' regarding the 60-day shot clock, but HCD clarified that state law requires applications to be 'approved or denied' within that timeframe.

For the official ordinance and latest updates, check your city or county planning department.

Frequently asked questions about ADU regulations in Rohnert Park

• What is the maximum ADU size in Rohnert Park, California?

  In Rohnert Park, the maximum ADU size is typically 1200 square feet, depending on whether the unit is attached or detached. California state law allows up to 1,200 sq ft for detached ADUs and 800 sq ft for attached in many jurisdictions; Rohnert Park may follow state defaults or have local limits. Verify with Rohnert Park planning for your specific lot.

• What are the setback requirements for ADUs in Rohnert Park?

  In Rohnert Park, typical setback requirements are 4 feet from the side property line and 4 feet from the rear. These may be reduced to 4 feet under California Government Code § 65852.2 where applicable. Check with Rohnert Park planning for overlay zones or design standards that could affect your site.

• What is the maximum height for an ADU in Rohnert Park?

  In Rohnert Park, the maximum height for an ADU is generally 16 feet. State law often allows up to 16 feet for detached ADUs and up to 25 feet when within 4 feet of the property line in some cases. Confirm with Rohnert Park or county planning for your zone.

• Is ADU approval ministerial in Rohnert Park?

  In Rohnert Park, ADU approval is typically Ministerial (by-right) per Gov Code §65852.2. Ministerial (by-right) review means the city must approve qualifying applications without discretionary review, per California Gov Code § 65852.2. Your project must still meet objective standards; Rohnert Park planning can confirm the exact process.

• Are there parking requirements for ADUs in Rohnert Park?

  In Rohnert Park, parking for ADUs is generally Often waived per state law; check local ordinance. California law often waives parking for ADUs within a half-mile of transit or in certain historic districts. Check with Rohnert Park planning for your address.