NASA seeking to lease or sell space-shuttle facilities, Orlando Sentinel
"The process is mostly secret, because NASA has agreed to let bidders declare their proposals proprietary, keeping them out of the view of competitors and the public. NASA has at various times published official notices seeking proposals and spelled out that the proposals should be space-related, though the agency will consider alternative uses under certain circumstances. But information about who wants to do what may not come until agency officials actually select finalists for negotiations."
Keith's note: Odd how NASA hasn't bothered to issue any overt procurement notices on this. Why can't they list what is for sale on their website so everyone can see?