Paul Ciminelli has spent close to four decades building his Buffalo-based Ciminelli Real Estate Corp. into an operation with offices in Florida, Pennsylvania and Massachusetts and a business presence in eight states. Among its significant achievements have been completing the 350,000-square-foot Conventus medical office building in Buffalo and providing property management work for KeyBank. Paul Ciminelli this year elevated his son, Kyle Ciminelli, to the role of president, positioning him as his eventual successor.