Cal. Gov. Code § 65911
Variances from the terms of an open-space zoning ordinance shall be granted only when, because of special circumstances applicable to the property, including size, shape, topography, location or surroundings, the strict application of the zoning ordinance deprives such property of privileges enjoyed by other property in the vicinity and under identical zoning classification.
Any variance granted shall be subject to such conditions as will assure that the adjustment thereby authorized shall not constitute a grant of special privileges inconsistent with the limitations upon other properties in the vicinity and zone in which such property is situated.
This section shall be literally and strictly interpreted and enforced so as to protect the interest of the public in the orderly growth and development of cities and counties and in the preservation and conservation of open-space lands.
Ca. Gov. Code § 65911