The Marion County Board of Supervisors will hold a public hearing and vote on a number of ordinances having to do with tax sale properties. The purpose of much of this business is to allows cities and the county to bid for and purchase tax sale certificates on abandoned property or vacant lots to promote low or moderate income housing. The Supervisors will also discuss the future usage of the Annex on S. 6th Street, among other items. The Marion County Board of Supervisors meet at 8:30 Monday morning at the Marion County Courthouse.