|(a) The purpose of this section is to provide an exception to §2253.001 of the Insurance Code for an insurer that writes residential property insurance or personal automobile insurance in the State of Texas. (b) This section applies to an insurer that writes residential property insurance or personal automobile insurance in the State of Texas. This section applies to a county mutual insurance company, a Lloyd's plan, or a reciprocal or interinsurance exchange effective January 1, 2004. (c) The following words and terms, when used in this section have the following meanings, unless the context clearly indicates otherwise. (1) County--A county in the State of Texas. (2) Insurer--An insurance company, reciprocal or interinsurance exchange, mutual insurance company, capital stock company, county mutual insurance company, Lloyd's plan, or other legal entity authorized to write residential property insurance or personal automobile insurance in the State of Texas. The term includes an appointed managing general agent, district, or local chapter program of a county mutual insurance company described by the Insurance Code §912.056(d) that manages a portion of that county mutual company's business independent of all other business of that county mutual insurance company and that is to be treated as a separate insurer for the purposes of Chapters 544, 2251, 2253, and 2254 of the Insurance Code as provided in §912.056(e) of the Insurance Code. The term does not include: (A) the Texas Windstorm Insurance Association under Chapter 2210 of the Insurance Code; (B) the FAIR Plan Association under Chapter 2211 of the Insurance Code; or (C) the Texas Automobile Insurance Plan Association under Chapter 2151 of the Insurance Code. (3) Personal automobile insurance--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. (4) Rate--The cost of insurance per exposure unit, whether expressed as a single number or as a prospective loss cost, with an adjustment to account for the treatment of expenses, profit, and individual insurer variation in loss experience, and before any application of individual risk variations based on loss or expense considerations. (5) Residential property insurance--Insurance against loss to real property at a fixed location or tangible personal property provided in a homeowners policy, a tenant policy, a condominium owners policy, or a residential fire and allied lines policy. (d) Except as provided by subsection (e) of this section, an insurer may not use rating territories that subdivide a county unless the county is subdivided and the rate for any subdivisions within that county is not greater than 15% higher than the rate used in any other subdivisions in the county by that insurer for identical coverage for insureds having, aside from rating territory, identical risk characteristics. (e) For residential property insurance or personal automobile insurance, an insurer may not use a rate for a subdivision within a county that is greater than 15% higher than the rate used in any other subdivision within that county unless the rate is based on sound actuarial principles, is supported by data filed with the department, and is in compliance with all statutory and regulatory requirements. (f) Notwithstanding statutory or regulatory filing exception requirements that would otherwise apply, an insurer must file with the department a rate for a subdivision within a county that is greater than 15% higher than the rate used in any other subdivision within that county in accordance with the statutory filing requirements applicable to residential property insurance or personal automobile insurance. (g) Filings under this section must be submitted to the Texas Department of Insurance, Property & Casualty Intake Unit, Mail Code 104-3B, 333 Guadalupe, Austin, Texas 78701 or to the Texas Department of Insurance, Property & Casualty Intake Unit, Mail Code 104-3B, P.O. Box 149104, Austin, Texas 78714-9104.