Mich. Comp. Laws § 458.406

Sec. 6. It shall be lawful for the trustees of every such church, congregation or society to sell and convey or mortgage, without the consent of the classis to which such church, congregation or society may belong, all real estate that may belong to such corporation, and upon which no church buildings or parsonage shall have been erected, and which is not necessary for use by such church, congregation or society in connection with their public worship.