Which are the most reputable real estate agencies in Pittsburgh, Pennsylvania? You could find reputable agents in these companies: Piatt Sotheby’s International Realty RE/MAX Select Realty Coldwell Banker Real Estate Services Howard Hanna Real Estate Services Berkshire Hathaway HomeServices The Preferred Realty Century 21 Rise Realty EXP Realty Piatt Sotheby’s International Realty Piatt Sotheby’s International Realty…