ADU Regulations in Rancho Mirage, California (2026)

Regulations at a glance

Local rules & notes

HOA Interference Prohibited: Homeowners’ associations cannot influence the approval of an ADU application or impose deed restrictions. Unpermitted ADU Amnesty: Local agencies cannot deny permits for unpermitted ADUs built before January 1, 2020, unless they are a health and safety issue. 60-Day Deemed Approved: Applications are deemed approved if the city does not act within 60 days of a completed application.

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

Frequently asked questions about ADU regulations in Rancho Mirage

• What is the maximum ADU size in Rancho Mirage, California?

  In Rancho Mirage, 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; Rancho Mirage may follow state defaults or have local limits. Verify with Rancho Mirage planning for your specific lot.

• What are the setback requirements for ADUs in Rancho Mirage?

  In Rancho Mirage, 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 Rancho Mirage planning for overlay zones or design standards that could affect your site.

• What is the maximum height for an ADU in Rancho Mirage?

  In Rancho Mirage, 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 Rancho Mirage or county planning for your zone.

• Is ADU approval ministerial in Rancho Mirage?

  In Rancho Mirage, 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; Rancho Mirage planning can confirm the exact process.

• Are there parking requirements for ADUs in Rancho Mirage?

  In Rancho Mirage, parking for ADUs is generally false. California law often waives parking for ADUs within a half-mile of transit or in certain historic districts. Check with Rancho Mirage planning for your address.