Filing office
Wis. Stat. § 409.501
in effect(1) Filing offices. Except as otherwise provided in sub. (2), if the local law of this state governs perfection of a security interest or agricultural lien, the office in which to file a financing statement to perfect the security interest or agricultural lien is:
(a) The office designated for the filing or recording of a record of a mortgage on the related real property, if:
1. The collateral is as-extracted collateral or timber to be cut; or
2. The financing statement is filed as a fixture filing and the collateral is goods that are or are to become fixtures; or
(b) The office of the department of financial institutions or any office duly authorized by the department, in all other cases, including a case in which the collateral is goods that are or are to become fixtures and the financing statement is not filed as a fixture filing.
(2) Filing office for transmitting utilities. The office in which to file a financing statement to perfect a security interest in collateral, including fixtures, of a transmitting utility is the office of the department of financial institutions. The financing statement also constitutes a fixture filing as to the collateral indicated in the financing statement which is or is to become fixtures.
Source: WI Statutes (Official Site)URL: https://docs.legis.wisconsin.gov/document/statutes/409.501Fetched: 10/7/2026