Minn. Stat. § 53B.15
Subd. 1. Requirement.
Each licensee shall make, keep, and preserve the following books, accounts, and other records for a period of three years:
Subd. 2. Compliance.
Subd. 3. Location.
Records may be maintained at a location other than within this state if they are made accessible to the commissioner on seven days' written notice.