Wis. Stat. § 59.698

Except as provided under s. 59.69 (2) (bm), for the enforcement of all laws, ordinances, rules and regulations enacted under s. 59.69, the board may appoint a building inspector, define the building inspector’s duties and fix the building inspector’s term of office and compensation. This section does not apply to a county with a population of 750,000 or more.