Mich. Comp. Laws § 450.139
Same; powers in relation to property. Every such parent corporation shall have power to hold in fee or otherwise, such real estate, and to own such personal property, as may be necessary to establish its state headquarters, or any charitable home or institution established or maintained by it, and for that purpose may contract for the purchase of land, take conveyance of, purchase, lease or rent such real estate as may be so necessary; and may in connection with any land or building erected thereon let or sublet any vacant space therein or thereon not necessary to the immediate requirements of the corporation. In case it shall become necessary or advisable for the corporation to execute any contract for the purchase of such land or the lease of any such building, or to sell, mortgage or convey the same, the executive or other committee or trustees having charge of the fiscal affairs of such corporation shall designate at least 2 officers of such corporation to execute and deliver such instruments on behalf of the corporation, as shall have been authorized by such committee or trustees.
MCL 450.139