(a) If a regulatory authority does not approve, conditionally approve, or disapprove a development document by the 15th day after the date prescribed by a provision of this code for the approval, conditional approval, or disapproval of the document, any required review of the document may be performed by a person:
(1) other than:
(A) the applicant; or
(B) a person whose work is the subject of the application; and
(2) who is:
(A) employed by the regulatory authority to review development documents;
(B) employed by another political subdivision to review development documents, if the regulatory authority has approved the person to review development documents; or
(C) an engineer licensed under Chapter 1001, Occupations Code.
(b) If a regulatory authority does not conduct a required development inspection by the 15th day after the date prescribed by a provision of this code for conducting the inspection, the inspection may be conducted by a person:
(1) other than:
(A) the owner of the land or improvement to the land that is the subject of the inspection; or
(B) a person whose work is the subject of the inspection; and
(2) who is:
(A) certified to inspect buildings by the International Code Council;
(B) employed by the regulatory authority as a building inspector;
(C) employed by another political subdivision as a building inspector, if the regulatory authority has approved the person to perform inspections; or
(D) an engineer licensed under Chapter 1001, Occupations Code.