Cal. Gov't Code § 65658.6
(a) An adaptive reuse project that satisfies the requirements of Section 65658.5 may include the development of new residential or mixed-use structures on undeveloped areas and parking areas located on the same parcel as the proposed repurposed building, or on the parcels adjacent to the proposed adaptive reuse project site if all of the following requirements are met:
(1) The adjacent portion of the project complies with the requirements of any of the following: