ADU Regulations in Poway, California (2026)

Regulations at a glance

Local rules & notes

60-Day Deemed Approval: If a local agency has not approved or denied a completed ADU application within 60 days, it is considered 'deemed approved' by operation of law. HOA Interference Prohibited: Homeowners Associations and third-party reviewers are legally barred from influencing or blocking ADU permit applications. Unpermitted Unit Amnesty: Local agencies cannot deny a permit for an unpermitted ADU built before 2020 unless it is a health and safety hazard.

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

Frequently asked questions about ADU regulations in Poway

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

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

• What are the setback requirements for ADUs in Poway?

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

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

  In Poway, 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 Poway or county planning for your zone.

• Is ADU approval ministerial in Poway?

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

• Are there parking requirements for ADUs in Poway?

  In Poway, 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 Poway planning for your address.