New legislation effective January 1, 2006, requires local health officers to make an assessment of a property after receiving notification from a law enforcement agency of potential contamination or of known or suspected contamination by a methamphetamine laboratory activity. If the property is determined to be contaminated, an order prohibiting its use or habitation shall be issued. Until the property owner receives a notice from a local health officer that the property identified in an order requires no further action, the property owner shall notify the prospective buyer in writing of the order, and provide the prospective buyer with a copy of the order. The prospective buyer shall acknowledge, in writing, the receipt of a copy of the order.

(Cal. Health & Safety § 25400.10 et. seq.)