Assembly Bill 603 mandates that cities, villages, and towns in Wisconsin must provide written notice to property owners at least seven days prior to a tax assessor entering their property for a tax assessment. This requirement aims to ensure that property owners are informed and can prepare for the assessment process.

The bill introduces new legal language by creating section 70.05 (4j) of the statutes, which specifies that the taxation district must notify property owners of the assessor's entry at least seven days in advance. This addition seeks to enhance transparency and communication between local governments and property owners regarding property tax assessments.