Wis. Stat. § 254.18: Lead hazard reduction in dwellings and premises; renovations.

(1) Sampling or testing of dwellings, units of dwellings or premises for the presence of lead-bearing paint or a lead hazard is not required before lead hazard reduction activities are conducted if the presence of lead-bearing paint or a lead hazard is assumed and the lead hazard reduction activities are performed in a lead-safe manner.

(2)

(a) In this subsection, “partial lead inspection” means an on-site investigation of one or more painted, varnished, or otherwise coated building components to determine the presence of lead, but not a surface-by-surface investigation.

(b) If the presence of lead-bearing paint or a lead hazard is assumed and a renovation of a dwelling, unit of a dwelling, or premises is performed in a lead-safe manner, any person who performs a partial lead inspection relating to that renovation is not required to comply with any requirements established by the department for a lead inspection.

(c) The person who performs a partial lead inspection under this subsection shall disclose, in writing, to the owner or lessor of the dwelling or premises that the person performed a partial lead inspection.