Entry onto a construction site or into a locked building, dwelling or room
Wis. Stat. § 943.15
in effect(1) Whoever enters the locked or posted construction site or the locked and enclosed building, dwelling or room of another without the consent of the owner or person in lawful possession of the premises is guilty of a Class A misdemeanor.
(1m) This section does not apply to an assessor and an assessor’s staff entering the construction site, other than buildings, of another if all of the following apply:
(a) The assessor or the assessor’s staff enters the construction site in order to make an assessment on behalf of the state or a political subdivision.
(b) The assessor or assessor’s staff enters the construction site on a weekday during daylight hours, or at another time as agreed upon by the land owner.
(c) The assessor or assessor’s staff spends no more than one hour on the construction site.
(d) The assessor or assessor’s staff does not open doors, enter through open doors, or look into windows of structures on the construction site.
(e) The assessor or the assessor’s staff leaves in a prominent place on the principal building at the construction site, or on the land if there is not a principal building, a notice informing the owner or occupant that the assessor or the assessor’s staff entered the construction site and giving information on how to contact the assessor.
(f) The assessor or the assessor’s staff has not personally received a notice from the owner or occupant, either orally or in writing, not to enter or remain on the premises.
(2) In this section:
(a) “Construction site” means the site of the construction, alteration, painting or repair of a building, structure or other work.
(b) “Owner or person in lawful possession of the premises” includes a person on whose behalf a building or dwelling is being constructed, altered, painted or repaired and the general contractor or subcontractor engaged in that work.
(c) “Posted” means that a sign at least 11 inches square must be placed in at least 2 conspicuous places for every 40 acres to be protected. The sign must carry an appropriate notice and the name of the person giving the notice followed by the word “owner” if the person giving the notice is the holder of legal title to the land on which the construction site is located and by the word “occupant” if the person giving the notice is not the holder of legal title but is a lawful occupant of the land.
Source: WI Statutes (Official Site)URL: https://docs.legis.wisconsin.gov/document/statutes/943.15Fetched: 10/7/2026