Wis. Stat. § 346.924: Transporting buildings on highways.

No person may operate a vehicle transporting a building, as defined in s. 348.27 (12m) (a) 1., on a highway unless all of the following apply:

(1) The vehicle is a commercial motor vehicle and the person holds a valid commercial driver license.

(2) The vehicle is operated under a valid motor carrier certificate or license of authority issued under ch. 194 or under applicable federal law, and all insurance requirements applicable to the vehicle under s. 194.41 or federal law are satisfied.