Danbury-based Kovacs Construction Corp. has purchased a 15,872 s/f industrial flex building on 3 acres at 321 Riggs St. from 321 Riggs Street Realty, LLC. The purchase price was $975,000. Kovacs will relocate its corporate headquarters to the Riggs Street property. Alan Fischer, CCIM, SIOR, of Fischer Real Estate Inc. represented the seller and the buyer in this transaction. Fischer Real Estate specializes in helping people make informed decisions on selling, buying or leasing commercial, industrial and investment properties.