ADU Regulations in South Pasadena, California (2026)

Regulations at a glance

Local rules & notes

FAR and Lot Coverage Exemption: If an ADU is built concurrently with a primary dwelling addition, 800 sq. ft. of the ADU is excluded from FAR and lot coverage calculations. 45-Year Demolition Review: Any structure 45 years or older proposed for demolition to make room for an ADU requires a specific historic resource evaluation and 'Notice of Intent to Demolish'. Second Story Articulation Requirement: Two-story ADUs must have significant wall plane articulation to reduce massing.

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

Frequently asked questions about ADU regulations in South Pasadena

• What is the maximum ADU size in South Pasadena, California?

  In South Pasadena, the maximum ADU size is typically 800 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; South Pasadena may follow state defaults or have local limits. Verify with South Pasadena planning for your specific lot.

• What are the setback requirements for ADUs in South Pasadena?

  In South Pasadena, 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 South Pasadena planning for overlay zones or design standards that could affect your site.

• What is the maximum height for an ADU in South Pasadena?

  In South Pasadena, 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 South Pasadena or county planning for your zone.

• Is ADU approval ministerial in South Pasadena?

  In South Pasadena, 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; South Pasadena planning can confirm the exact process.

• Are there parking requirements for ADUs in South Pasadena?

  In South Pasadena, 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 South Pasadena planning for your address.