ADU Regulations in San Clemente, California (2026)

Regulations at a glance

Local rules & notes

Pre-approved ADU Plans: The city actively promotes the use of pre-approved site and floor plans created by the Orange County Council of Governments (OCCOG) to facilitate construction and reduce costs. ADU One-Stop Shop: The city committed to creating a dedicated resource center to help homeowners navigate the ADU development process and prioritize issues. Affordable Housing Fee Waivers: The City Council has the authority to approve waivers, deferred fees, or supplement fees with funds from the In-lieu Fee Fund for affordable housing projects.

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

Frequently asked questions about ADU regulations in San Clemente

• What is the maximum ADU size in San Clemente, California?

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

• What are the setback requirements for ADUs in San Clemente?

  In San Clemente, 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 San Clemente planning for overlay zones or design standards that could affect your site.

• What is the maximum height for an ADU in San Clemente?

  In San Clemente, 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 San Clemente or county planning for your zone.

• Is ADU approval ministerial in San Clemente?

  In San Clemente, 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; San Clemente planning can confirm the exact process.

• Are there parking requirements for ADUs in San Clemente?

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