Officials with the United States Postal Service operate one of the largest commercial property operations in the country, including thousands of acres of vacant land that just sits there, according to the USPS Inspector General.

In fact, the Post Office owns 33,000 facilities nationwide with more than 280 million square feet of space. But the Post Office has also been downsizing its workforce and upgrading its technological capabilities. Such moves usually result in the need for less space, compared to traditional or conventional service businesses.