The owner of any real property sold for non-payment of real property taxes and public sewer system user fees, his heirs, agent or assigns, or any person having a right or interest therein, may redeem the same within one year from the date of sale at public auction by paying to the Office of the Lieutenant Governor the full amount of all taxes and public sewer system user fees for which the property was offered at public auction, plus interest at the rate of twelve percent per annum computed on the full amount of the purchase money to the date 30 days after tender is made to the Office of the Lieutenant Governor, together with all penalties, costs incurred, taxes and public sewer system user fees due and an Office of the Lieutenant Governor Administrative fee of $15. Upon payment of said amounts, the redemptioner shall receive a certificate of redemption from the Lieutenant Governor. The certificate of redemption shall operate as a release of all claims by the auction purchaser to title to said property by virtue of the sale for non-payment of real property taxes and public sewer system user fees and shall supersede the certificate of purchase. The redemptioner may have such release duly entered in the real property register against the certificate of purchase upon payment to the Recorder of Deeds of such fees as may be specified by Title 28, section 133, of this Code. The property so released shall remain subject to all liens and legal claims against it, other than the real property tax and public sewer system user fee liens for which it was sold, to the same extent and in the manner as though said property had not been sold for real property taxes and public sewer system user fees. When the property is redeemed by a mortgagee, the redemption money paid by him shall be added to his mortgage lien and may be recovered with the same rate of interest borne by the mortgage lien; when a tenant or lessee redeems such property, he may deduct the amount of such redemption money from his rent.