In any case in which the Building Safety Commission causes a building to be repaired, closed or demolished, the costs therefor, after the proceeds of the sale of salvaged material, if any, are credited to the account, shall be a personal obligation of the owner and shall constitute a lien against the real property upon which such cost was incurred; provided, that such costs shall cease to constitute a lien against such property unless within ninety days after completion of such repair, closing or demolition, a certified statement showing the nature of the work, the date and amount thereof, the property affected and the name of the owner thereof, be filed for record in the County Clerk's office in the trust deed books.
(1965 Code §4-14)