(1) (a) If an insurer issues a binder of insurance during a period in which the insurer assesses the risk related to an individual's real and personal property for the purposes of homeowner's insurance, the insurer shall provide notice to the potential insured that the documents are only a binder and subject to cancellation.

(b) The commissioner may promulgate a rule or issue a bulletin concerning disclosure requirements for a binder of insurance for homeowner's insurance.

(2) (a) If an insurer uses underwriting criteria based on an individual's credit score, the claims history of the property, or the claims history of the applicant, the insurer shall notify the applicant of the use of such criteria during the application process.

(b) If an insurer uses claims experience for the property and such claims history results in an adverse action to the applicant or policyholder, the insurer shall disclose to the applicant or policyholder the specific claim information that resulted in the adverse action.

(3) No insurer shall cancel or refuse to renew a policy of homeowner's insurance unless such insurer mails, by first-class mail to the named insured, at the last address shown in the insurer's records, at least thirty days in advance, a notice of its intended action pursuant to section 10-4-110 that specifically states the reasons for proposing to take such action pursuant to section 10-4-110; except that, where cancellation is for nonpayment of premium, at least ten days' notice of cancellation accompanied by the reasons therefor shall be given.

(4) An insurer offering homeowner's insurance in this state shall file with the commissioner the underwriting methodologies used by the insurer. Such underwriting methodologies are not public records and are exempted from article 72 of title 24, C.R.S., and are proprietary and not subject to public examination; except that the commissioner may use information from the underwriting methodologies filed pursuant to this subsection (4) that does not identify a specific insurer for consumer information publications concerning homeowner's insurance.

(5) If an insurer issues a binder or a policy of insurance during a period in which the insurer assesses the risk related to an individual's real and personal property for the purposes of homeowner's insurance, the insurer shall provide notice to the potential insured that the documents are conditional and that the insurer has thirty business days, commencing on the effective date of the conditional coverage, to evaluate the issuance of a policy for homeowner's insurance. If the insurer refuses to issue a policy of homeowner's insurance or cancels a conditional policy that has been issued as of an effective date within this thirty-business-day period, the insurer shall notify the homeowner of the insurer's decision. If, prior to the expiration of the thirty-business-day period, the insurer obtains information showing an articulable and reasonable basis on which the insurer might be justified in cancelling coverage and the insurer believes that further investigation or repair of the property is necessary, the thirty-business-day period may be extended. The insurer shall complete any inspection associated with the underwriting of the new property within the thirty-business-day period.