Over the years, many companies grow a large portfolio of commercial real estate properties. Some are owned, some leased and some are big while others are small. Your portfolio could include office, retail and industrial sites in large and small markets. While a certain degree of diversity in CRE is to be expected even in a mid-sized company, there's a good chance that you have too many sites and that one or two (or more) can be easily consolidated. Here are some factors to look for as you review your company's portfolio for consolidation.