Section 9-501: Filing Office
Section 9–501. (a) Filing offices. Except as otherwise provided in subsection (b), 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:
(1) the office designated for the filing or recording of a record of a mortgage on the related real property, if:
(A) the collateral is as-extracted collateral or timber to be cut; or
(B) the financing statement is filed as a fixture filing and the collateral is goods that are or are to become fixtures; or
(2) the office of the state secretary, 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.
(b) 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 state secretary. The financing statement also constitutes a fixture filing as to the collateral indicated in the financing statement which is or is to become fixtures.
(c) Filing office for fixtures. The office designated for the filing or recording of a record of a mortgage on the related real property shall, in the case of land which has not been registered pursuant to chapter 185, be the office of the register of deeds within which the real property is located. The office designated for the filing or recording of a record of a mortgage on the related real property shall, in the case of land which has been registered pursuant to said chapter 185, be the office of the registry district of the land court within which the real property is located.