California Code, Civil Code - CIV § 1102.4

(a) Neither the seller nor any seller's agent or buyer's agent shall be liable for any error, inaccuracy, or omission of any information delivered pursuant to this article if the error, inaccuracy, or omission was not within the personal knowledge of the seller or that listing or buyer's agent, was based on information timely provided by public agencies or by other persons providing information as specified in subdivision (c) that is required to be disclosed pursuant to this article, and ordinary care was exercised in obtaining and transmitting it.

(b) The delivery of any information required to be disclosed by this article to a prospective buyer by a public agency or other person providing information required to be disclosed pursuant to this article shall be deemed to comply with the requirements of this article and shall relieve the seller or any listing or buyer's agent of any further duty under this article with respect to that item of information.

(c) The delivery of a report or opinion prepared by a licensed engineer, land surveyor, geologist, structural pest control operator, contractor, a C-39 roofing contractor conducting a roof inspection pursuant to subdivision (d) of Section 7197 of the Business and Professions Code, or other expert, dealing with matters within the scope of the professional's license or expertise, shall be sufficient compliance for application of the exemption provided by subdivision (a) if the information is provided to the prospective buyer pursuant to a request therefor, whether written or oral.  In responding to such a request, an expert may indicate, in writing, an understanding that the information provided will be used in fulfilling the requirements of Section 1102.6 and, if so, shall indicate the required disclosures, or parts thereof, to which the information being furnished is applicable.  Where such a statement is furnished, the expert shall not be responsible for any items of information or parts thereof, other than those expressly set forth in the statement.