ADU Regulations in Lemon Grove, California (2026)

Regulations at a glance

Local rules & notes

Statewide Exemption ADU: A specific category of ADU (up to 800 sq ft, 16 ft height, 4 ft setbacks) that overrides local zoning constraints like lot coverage and FAR. Deemed Approved Clause: If a local agency fails to act on a completed application within 60 days, the application is automatically deemed approved. HOA Restrictions Void: CC&Rs or HOA rules that effectively prohibit or unreasonably restrict ADUs are void and unenforceable.

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

Frequently asked questions about ADU regulations in Lemon Grove

• What is the maximum ADU size in Lemon Grove, California?

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

• What are the setback requirements for ADUs in Lemon Grove?

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

• What is the maximum height for an ADU in Lemon Grove?

  In Lemon Grove, 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 Lemon Grove or county planning for your zone.

• Is ADU approval ministerial in Lemon Grove?

  In Lemon Grove, 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; Lemon Grove planning can confirm the exact process.

• Are there parking requirements for ADUs in Lemon Grove?

  In Lemon Grove, parking for ADUs is generally 1. California law often waives parking for ADUs within a half-mile of transit or in certain historic districts. Check with Lemon Grove planning for your address.