The receiver shall be discharged upon rendering a full and complete accounting to the court when the conditions giving rise to the receivership have been removed and the cost thereof, and all other costs authorized by sections 441.500 to 441.640, have been paid or reimbursed and any surplus money has been paid over to the owner or the mortgagee or any lienor as the court may direct. However, at any time, the receiver may be discharged upon filing his account as receiver without affecting the right of the code enforcement agency to its lien. Upon the removal of the condition giving rise to the receivership, the owner, the mortgagee or lienor may apply for the discharge of the receiver upon payment to the receiver of all moneys expended by the receiver for removal of such condition and all other costs authorized by sections 441.500 to 441.640 which have not been paid or reimbursed.