ADU Regulations in Solana Beach, California (2026)

Regulations at a glance

Local rules & notes

Subjective Entrance Visibility Rule: The city attempted to mandate that ADU entrances not be visible from the street, which is a subjective standard prohibited by state law. Multifamily Detached ADU Expansion: The city's ordinance incorrectly capped detached ADUs on multifamily lots at two; state law requires allowing up to eight detached units. Front Setback Waiver Requirement: The city failed to include front setbacks in the list of standards that must be waived to accommodate an 800 square foot ADU. Fire Sprinkler Retrofit Prohibition: The ordinance must clarify that building an ADU does not trigger a requirement to install sprinklers in the existing primary residence.

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

Frequently asked questions about ADU regulations in Solana Beach

• What is the maximum ADU size in Solana Beach, California?

  In Solana Beach, the maximum ADU size is typically 800 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; Solana Beach may follow state defaults or have local limits. Verify with Solana Beach planning for your specific lot.

• What are the setback requirements for ADUs in Solana Beach?

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

• What is the maximum height for an ADU in Solana Beach?

  In Solana Beach, 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 Solana Beach or county planning for your zone.

• Is ADU approval ministerial in Solana Beach?

  In Solana Beach, 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; Solana Beach planning can confirm the exact process.

• Are there parking requirements for ADUs in Solana Beach?

  In Solana Beach, parking for ADUs is generally Often waived per state law; check local ordinance. California law often waives parking for ADUs within a half-mile of transit or in certain historic districts. Check with Solana Beach planning for your address.