Annexation Methods

​Wisconsin statutes authorize five different annexation methods. They are:

1. Annexation by Unanimous Approval (s. 66.0217 (2) Wis. Stats.)
   
2. Annexation by One-Half Approval (s. 66.0217 (3) (a) Wis. Stats.)
   
3. Annexation by Referendum (s. 66.0217 (3) (b) Wis. Stats.)
   
4. Annexation by City or Village Initiated Referendum (s. 66.0219 Wis. Stats.)
   
5. Annexation of Town Islands (s. 66.0221 Wis. Stats.)
   
6. Annexation of Territory Owned by a City or Village (s. 66.0223 Wis. ​Stats.)
   

Annexation by Unanimous Approval and by Non-Unanimous Approval are the most common of these methods. They involve:

1. a property owner
   
2. a town(s)
   
3. a village or City
   
4. a public interest review by the Department of Administration. See Department Review of Annexations.
   

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