The nuisance inspector shall prepare an itemized statement of all expenses incurred in the removal and destruction of nuisances, including actual and projected storage costs of items removed and temporarily stored pursuant to section 4-1-3-5 of this chapter, and shall mail a copy thereof to the owner or occupant or both or to persons having an interest in the property, demanding payment within twenty (20) days of the date of mailing. The notice shall be deemed delivered when mailed by registered mail, addressed to the last known address of the property owner, occupant or persons having an interest in the property. (1982 Code § 10-354)