Sullivan County Board of Realtors, Inc. Share: Real Estate Agents Sullivan County Board of Realtors, Inc. Visit Website Request Info 548 Broadway Monticello, NY 12701 (845) 794-2735 (845) 794-2953 (fax) Facebook About Map About SCMLS Mission Statement The mission of the Multiple Listing Service of the Sullivan County Board of Realtors is to provide the highest and best service to our members and ultimately our clients and c What's Nearby? Distance: 5 10 15 20 25 50 mi.