United Properties offers 494 HQ for sale By: Minneapolis / St. Paul Business Journal via Business Journals February 21, 2014 at 15:44 PM EST Northland Center, an office complex on the I-494 strip that United Properties developed 30 years ago and has owned since, is being marketed for sale... Read More >> Related Stocks: ConAgra Foods Kellogg Co Wal-Mart Stores, Inc. Xerox Corp