Kathleen v. Fabian

*442Opinion

REYNOSO, J.

In In re the Marriage of Buol (1985) 39 Cal.3d 751 [218 Cal.Rptr. 31, 705 P.2d 354] we held that retroactive application of a statutory provision requiring a writing to prove, upon dissolution of marriage, *443that property taken in joint tenancy during marriage was actually the separate property of one spouse impaired vested property rights without due process of law. We must now determine whether retroactive application of a companion measure which provides for reimbursement of separate property contributions to community assets absent a signed writing waiving such…