Minn. Stat. § 435.195

The option to defer the payment of special assessments shall terminate and all amounts accumulated plus applicable interest, shall become due upon the occurrence of any of the following events: (a) the death of the owner, provided that the spouse is otherwise not eligible for the benefits hereunder; (b) the sale, transfer or subdivision of the property or any part thereof; (c) if the property should for any reason lose its homestead status; or (d) if for any reason the taxing authority deferring the payments shall determine that there would be no hardship to require immediate or partial payment.