ADU Regulations in Loomis, California (2026)

Regulations at a glance

Local rules & notes

50% Impact Fee Reduction: The Town provides a substantial financial incentive by cutting development impact fees in half for ADU projects. Standardized ADU Plans: The Town committed to developing or coordinating with the County for pre-approved plans to lower design and permit costs. ADU Affordability Monitoring: The Town tracks ADU rental rates to ensure they contribute to low-income housing goals and will rezone additional land if ADUs fail to meet affordability targets.

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

Frequently asked questions about ADU regulations in Loomis

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

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

• What are the setback requirements for ADUs in Loomis?

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

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

  In Loomis, 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 Loomis or county planning for your zone.

• Is ADU approval ministerial in Loomis?

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

• Are there parking requirements for ADUs in Loomis?

  In Loomis, 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 Loomis planning for your address.