ADU Regulations in Plumas County, California (2026)

Regulations at a glance

Local rules & notes

CDBG-DR Funding Integration: The project is specifically funded through the Community Development Block Grant–Disaster Recovery program, targeting workforce housing in disaster-impacted areas like Greenville. Workforce Housing Initiative: A unique public-private-nonprofit partnership specifically designed to create 38–40 new rental units via ADUs to support local employers.

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

Frequently asked questions about ADU regulations in Plumas County

• What is the maximum ADU size in Plumas County, California?

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

• What are the setback requirements for ADUs in Plumas County?

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

• What is the maximum height for an ADU in Plumas County?

  In Plumas County, 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 Plumas County or county planning for your zone.

• Is ADU approval ministerial in Plumas County?

  In Plumas County, 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; Plumas County planning can confirm the exact process.

• Are there parking requirements for ADUs in Plumas County?

  In Plumas County, 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 Plumas County planning for your address.