If any unimproved and unoccupied parcels of land are sold for nonpayment of taxes assessed against the same person, the collector may convey in one deed to the same purchaser, or convey to the city or town any number of lots so advertised and sold, and the deed shall state the amount of the taxes and costs due for each lot. The cost of the sale shall be apportioned equally among all the lots sold, and the cost of the deed shall be apportioned equally among all the lots conveyed by the deed.
R.I. Gen. Laws § 44-9-16