ADU Regulations in Nevada City, California (2026)

Regulations at a glance

Local rules & notes

Deemed Approved Status: If the city fails to approve or deny a completed application within 60 days, the application is automatically deemed approved. Unpermitted ADU Amnesty: The city cannot deny a permit for an unpermitted ADU built before 2020 based on building code violations unless they are health and safety issues. Assessable Space Exemption: Units under 500 square feet of interior livable space do not increase the assessable space of the property.

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

Frequently asked questions about ADU regulations in Nevada City

• What is the maximum ADU size in Nevada City, California?

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

• What are the setback requirements for ADUs in Nevada City?

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

• What is the maximum height for an ADU in Nevada City?

  In Nevada City, 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 Nevada City or county planning for your zone.

• Is ADU approval ministerial in Nevada City?

  In Nevada City, 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; Nevada City planning can confirm the exact process.

• Are there parking requirements for ADUs in Nevada City?

  In Nevada City, 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 Nevada City planning for your address.