ADU Regulations in East Palo Alto, California (2026)

Regulations at a glance

Local rules & notes

Lot Coverage Bonus: For homes existing/permitted as of Jan 1, 2017, the ADU footprint (up to 100%) is exempt from lot coverage calculations, provided the lot is at least 10% of the minimum lot size. Floor Area Bonus: For homes existing/permitted as of Jan 1, 2017, an additional 220 sq. ft. of floor area is granted specifically to develop an ADU. Eichler Tract Restrictions: Properties in Eichler Tracts have significantly reduced height limits to preserve neighborhood character (12 ft for detached ADUs). Daylight Plane Requirement: Buildings cannot encroach into a daylight plane starting at 8 ft height at the property line with a 1:1 slope.

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

Frequently asked questions about ADU regulations in East Palo Alto

• What is the maximum ADU size in East Palo Alto, California?

  In East Palo Alto, the maximum ADU size is typically 900 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; East Palo Alto may follow state defaults or have local limits. Verify with East Palo Alto planning for your specific lot.

• What are the setback requirements for ADUs in East Palo Alto?

  In East Palo Alto, typical setback requirements are 6 feet from the side property line and 6 feet from the rear. These may be reduced to 4 feet under California Government Code § 65852.2 where applicable. Check with East Palo Alto planning for overlay zones or design standards that could affect your site.

• What is the maximum height for an ADU in East Palo Alto?

  In East Palo Alto, the maximum height for an ADU is generally 17 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 East Palo Alto or county planning for your zone.

• Is ADU approval ministerial in East Palo Alto?

  In East Palo Alto, 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; East Palo Alto planning can confirm the exact process.

• Are there parking requirements for ADUs in East Palo Alto?

  In East Palo Alto, 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 East Palo Alto planning for your address.