ADU Regulations in Oakley, California (2026)

Regulations at a glance

Local rules & notes

Shipping Container Residences: Shipping containers are permitted for use as residences/ADUs provided they are completely screened from public view and meet building codes. Tiny Home ADU Provisions: Tiny homes between 140 and 400 square feet are permitted as ADUs under a streamlined Low Impact Permit process. Agricultural Employee Housing Bonus: Properties with viable agricultural operations can build employee ADUs up to 2,000 square feet, significantly larger than the standard 1,000 square foot limit.

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

Frequently asked questions about ADU regulations in Oakley

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

  In Oakley, the maximum ADU size is typically 1000 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; Oakley may follow state defaults or have local limits. Verify with Oakley planning for your specific lot.

• What are the setback requirements for ADUs in Oakley?

  In Oakley, typical setback requirements are 8 feet from the side property line and 12 feet from the rear. These may be reduced to 4 feet under California Government Code § 65852.2 where applicable. Check with Oakley planning for overlay zones or design standards that could affect your site.

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

  In Oakley, the maximum height for an ADU is generally 32 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 Oakley or county planning for your zone.

• Is ADU approval ministerial in Oakley?

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

• Are there parking requirements for ADUs in Oakley?

  In Oakley, 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 Oakley planning for your address.