ADU Regulations in Covina, California (2026)

Regulations at a glance

Local rules & notes

Illegal Setback Requirement for Conversions: The City ordinance requires a 4-foot setback for detached ADUs on multifamily lots, even for conversions. HCD explicitly states that converted existing structures are exempt from setbacks. Illegal Siting Restriction (Side Yards): The City attempted to prohibit ADUs in the area between the front property line and the back of the primary residence (effectively banning side-yard ADUs). HCD deemed this impermissibly burdensome. Exterior Staircase Ban: The City prohibited exterior staircases between the property line and the building. HCD ruled this invalid as it would make compliant exterior staircases impossible for many second-story units. Multifamily Size Cap Calculation: The City limited the *combined* square footage of detached ADUs on multifamily lots to 1,200 sq ft. HCD clarified that size limits apply to *each* ADU, not the aggregate. Separate Sale Prohibition: The City prohibited separate sale of ADUs without acknowledging the state exception for qualified nonprofit housing organizations.

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

Frequently asked questions about ADU regulations in Covina

• What is the maximum ADU size in Covina, California?

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

• What are the setback requirements for ADUs in Covina?

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

• What is the maximum height for an ADU in Covina?

  In Covina, 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 Covina or county planning for your zone.

• Is ADU approval ministerial in Covina?

  In Covina, 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; Covina planning can confirm the exact process.

• Are there parking requirements for ADUs in Covina?

  In Covina, 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 Covina planning for your address.