Louisiana Revised Statutes Tit. 40, § 1730.33. Codes applicable to building inspections

(1) If no date of issuance of an original building permit can be found, an inspector shall conduct the inspection using the requirements of the codes in effect on the date of submission of the original building permit application.

(2) If no date of application for, or date of issuance of, the original building permit is available, the building official of the applicable parish planning and development service or similar agency shall use court records and other available documents, such as transfer of property records, mortgage records, tax records, or rent records, to ascertain the nearest date possible to the issuance of the original building permit. If the building official is able to determine a date pursuant to the requirements of this Paragraph, an inspector shall conduct the inspection using the requirements of the codes in effect on the date established by the building official.

(3) If ambiguity exists after attempting to determine an applicable date under Paragraphs (1) and (2) of this Subsection, an inspector shall conduct an inspection using the requirements of the least restrictive codes in effect during the period of time beginning one calendar year prior to and ending one calendar year subsequent to the earliest recorded date of transfer of the property to be inspected.