ADU Regulations in Amador County, California (2026)

Regulations at a glance

Local rules & notes

Limited Density Owner-Built Rural Dwellings (LDRD): Rural residents can build an ADU as an owner-builder under an LDRD permit if they plan to live in it, potentially offering more flexibility. Mother Lode ADU Plans Gallery: The county provides a gallery of pre-existing and pre-reviewed plans to reduce design time and costs. Snow Load and Hillside Engineering: Due to local geography, high-engineered designs may be required for snow loads (elevation dependent) and hillsides (slope dependent).

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

Frequently asked questions about ADU regulations in Amador County

• What is the maximum ADU size in Amador County, California?

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

• What are the setback requirements for ADUs in Amador County?

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

• What is the maximum height for an ADU in Amador County?

  In Amador County, 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 Amador County or county planning for your zone.

• Is ADU approval ministerial in Amador County?

  In Amador County, 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; Amador County planning can confirm the exact process.

• Are there parking requirements for ADUs in Amador County?

  In Amador County, 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 Amador County planning for your address.