Cal. Civil Code § 715 : Ownership — California Civil Code — Property — Modifications Of Ownership — Duration Of Leases — Lease commenced at time certain or happening of future event Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session A lease to commence at a time certain or upon the happening of a future event becomes invalid if its term does not actually commence in possession within 30 years after its execution. Ca. Civ. Code § 715