Mich. Comp. Laws § 457.687

Sec. 7. The business office of the grand council shall be located in the city of Saginaw, county of Saginaw, and state of Michigan, and subordinate councils shall have their business office where said subordinate council shall have been chartered and organized, but the location of the business office of the grand council may be changed at any time by said grand council upon filing a written notice of such change in the corporation and securities bureau of the department of commerce within 20 days from the time of the change of such location.