(a) In this section:
(1) “Insurer” means an insurance company, reciprocal or interinsurance exchange, mutual insurance company, capital stock company, county mutual insurance company, Lloyd’s plan, or other legal entity engaged in the business of personal automobile insurance or residential property insurance in this state. The term includes:
(A) an affiliate as described by § 823.003(a) if that affiliate is authorized to write and is writing personal automobile insurance or residential property insurance in this state;
(B) the Texas Windstorm Insurance Association created and operated under Chapter 2210;
(C) the FAIR Plan Association under Chapter 2211; and
(D) the Texas Automobile Insurance Plan Association under Chapter 2151.
(2) “Personal automobile insurance” means motor vehicle insurance coverage for the ownership, maintenance, or use of a private passenger, utility, or miscellaneous type motor vehicle, including a motor home, mobile home, trailer, or recreational vehicle, that is:
(A) owned or leased by an individual or individuals; and
(B) not primarily used for the delivery of goods, materials, or services, other than for use in farm or ranch operations.
(3) “Residential property insurance” means insurance coverage against loss to residential real property at a fixed location or tangible personal property provided in a homeowners policy, which includes a tenant policy, a condominium owners policy, or a residential fire and allied lines policy.
(4) “Underwriting guideline” means a rule, standard, guideline, or practice, whether written, oral, or electronic, that is used by an insurer or its agent to decide whether to accept or reject an application for coverage under a personal automobile insurance policy or residential property insurance policy or to determine how to classify those risks that are accepted for the purpose of determining a rate.
(b) Each insurer shall file with the department a copy of the insurer’s underwriting guidelines. The insurer shall update its filing each time the underwriting guidelines are changed. If a group of insurers files one set of underwriting guidelines for the group, they shall identify which underwriting guidelines apply to each company in the group.

(c) The office of public insurance counsel may obtain a copy of each insurer’s underwriting guidelines.
(d) The department or the office of public insurance counsel may disclose to the public a summary of an insurer’s underwriting guidelines in a manner that does not directly or indirectly identify the insurer.
(e) Underwriting guidelines must be sound, actuarially justified, or otherwise substantially commensurate with the contemplated risk. Underwriting guidelines may not be unfairly discriminatory.
(f) The underwriting guidelines are subject to Chapter 552, Government Code.