W. Va. Code § 8-12-21: Restriction on the regulation of trades, occupations, and professions.

Except as expressly provided by this code, neither a municipality nor the governing body of any municipality may, by ordinance or otherwise, enact or enforce any law, ordinance, regulation, or rule, requiring the licensing, certification, or registration of any person or business in order to practice or conduct a trade, occupation, or profession within the jurisdiction of the municipality. This section does not limit the authority of a municipality to regulate the repair, alteration, improvement, demolition or removal of buildings, structures, or of any equipment or part of a structure as provided in §8-12-14 and §8-12-16 of this code.