ADU Regulations in Buellton, California (2026)

Regulations at a glance

Local rules & notes

Two-Story Detached ADUs Allowed: The code explicitly permits two-story detached ADUs, provided privacy measures regarding access and windows are met. Owner Occupancy Administrative Exception: Unusual flexibility allowing the Zoning Administrator to waive owner occupancy requirements in the R-1 zone on a case-by-case basis. Curb Cut Restriction: Strict limitation on driveway access points. Front Yard ADA Access: Permits ADA ramps or access to first-story ADUs in the front of the primary dwelling.

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

Frequently asked questions about ADU regulations in Buellton

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

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

• What are the setback requirements for ADUs in Buellton?

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

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

  In Buellton, 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 Buellton or county planning for your zone.

• Is ADU approval ministerial in Buellton?

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

• Are there parking requirements for ADUs in Buellton?

  In Buellton, 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 Buellton planning for your address.