ADU Regulations in Willits, California (2026)

Regulations at a glance

Local rules & notes

Deemed Approved Status: If the local agency fails to approve or deny a completed ADU application within 60 days, the application is legally deemed approved. HOA and Deed Restriction Prohibition: Homeowners’ associations and deed restrictions cannot prohibit or unreasonably restrict the construction or use of an ADU. Unpermitted Unit Amnesty: The city is prohibited from denying a permit for an unpermitted ADU built before 2020 unless it is a health and safety risk. Delayed Enforcement: Owners can request a 5-year delay in enforcement of building code violations for ADUs that do not present health and safety hazards.

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

Frequently asked questions about ADU regulations in Willits

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

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

• What are the setback requirements for ADUs in Willits?

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

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

  In Willits, 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 Willits or county planning for your zone.

• Is ADU approval ministerial in Willits?

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

• Are there parking requirements for ADUs in Willits?

  In Willits, 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 Willits planning for your address.