California Code, Code of Civil Procedure - CCP § 1265.410

(a) Where the acquisition of property for public use violates a use restriction coupled with a contingent future interest granting a right to possession of the property upon violation of the use restriction:

(b) Where the acquisition of property for public use violates a use restriction coupled with a contingent future interest granting a right to possession of the property upon violation of the use restriction but the contingent future interest is not compensable under subdivision (a), if the use restriction is that the property be devoted to a particular charitable or public use, the compensation for the property shall be devoted to the same or similar use coupled with the same contingent future interest.