ADU Regulations in Jackson, California (2026)

Regulations at a glance

Local rules & notes

Prohibition of Detached Units: Unlike standard ADU ordinances, this code explicitly forbids In-Law Suites in accessory structures, requiring them to be an 'integral part of the principle structure'. Household Member Restriction: Occupancy is strictly limited to members of the existing household, effectively banning the use of the unit for third-party rental income. Conditional Use Permit Required: In-Law Suites are not permitted by right; they require a Conditional Use permit subject to Chapter 107 approval.

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

Frequently asked questions about ADU regulations in Jackson

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

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

• What are the setback requirements for ADUs in Jackson?

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

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

  In Jackson, 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 Jackson or county planning for your zone.

• Is ADU approval ministerial in Jackson?

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

• Are there parking requirements for ADUs in Jackson?

  In Jackson, 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 Jackson planning for your address.