ADU Regulations in Port Hueneme, California (2026)

Regulations at a glance

Local rules & notes

Ordinance Declared Null and Void: HCD has officially declared the city's ADU ordinance null and void. The city must apply state standards until a compliant ordinance is adopted. Illegal Affordability Covenants: The city was specifically cited for requiring affordability covenants that conflict with state law, which are now unenforceable. Notice of Violation Enforcement: The city has been given a 30-day window to remedy violations or face referral to the California Office of the Attorney General.

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

Frequently asked questions about ADU regulations in Port Hueneme

• What is the maximum ADU size in Port Hueneme, California?

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

• What are the setback requirements for ADUs in Port Hueneme?

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

• What is the maximum height for an ADU in Port Hueneme?

  In Port Hueneme, 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 Port Hueneme or county planning for your zone.

• Is ADU approval ministerial in Port Hueneme?

  In Port Hueneme, 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; Port Hueneme planning can confirm the exact process.

• Are there parking requirements for ADUs in Port Hueneme?

  In Port Hueneme, 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 Port Hueneme planning for your address.