Pursuant to Cal. Gov’t. Code § 25845, the Board of Supervisors may order that the cost of abating nuisances pursuant to this chapter and the administrative costs as confirmed by the Board be placed upon the county tax roll against the respective parcels of land, or placed on the unsecured roll; provided, however, that the cost of abatement and the cost of administration as finally determined shall not be placed on the tax roll if paid in full prior to entry of said costs on the tax roll. The Board of Supervisors may also cause notices of abatement lien to be recorded against the respective parcels of real property pursuant to Cal. Gov’t. Code § 25845.