ADU Regulations in Escondido, California (2026)

Regulations at a glance

Local rules & notes

Lot Coverage & FAR Exemption: The area of any existing or proposed ADU or JADU, up to 800 square feet per lot, is excluded from lot coverage and gross floor area calculations. Hillside Overlay Building Separation: Stricter building separation of 8 feet is required in the Hillside Overlay District for fire safety, reducible to 5 feet if it precludes an 800 sq ft ADU. Front Setback Allowance: Explicit permission to site an ADU in the front setback if an 800 sq ft unit cannot be accommodated elsewhere, with a graduated setback reduction system (10ft, then 5ft, then lot line). Nonprofit Separate Sale (AB 587): Allows separate sale of ADU from primary dwelling if developed by a qualified nonprofit corporation for low-income housing.

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

Frequently asked questions about ADU regulations in Escondido

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

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

• What are the setback requirements for ADUs in Escondido?

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

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

  In Escondido, the maximum height for an ADU is generally 25 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 Escondido or county planning for your zone.

• Is ADU approval ministerial in Escondido?

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

• Are there parking requirements for ADUs in Escondido?

  In Escondido, 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 Escondido planning for your address.