California Code, Civil Code - CIV § 2992

A prospective assignee that provides a lessor under a lease contract with a preprinted form for use as a lease contract shall design the form in such a manner so as to provide on its face sufficient space for the lessor to include all disclosures and itemizations required pursuant to Section 2985.8 and shall also contain on its face a separate blank space no smaller than seven and one-half square inches for the lessor and lessee to memorialize trade-in, turn-in, and other individualized agreements.