You can read:
Forum
FAQ or the
DMOZ Help Central-Submitting Your Site section for more information.
You also will need to read the
Posting Guidelines and properly format a status request in this thread so some one can look for you.
It was placed in the Business section - real estate - commercial...
Actually it would have been suggested to a Business category, not placed. Only a volunteer editor can list a site in the directory, and only after it has recieved an individual review to see if it meets the listing guidelines.
With out looking at the site
and just making a generalization, there are any number of reasons that your site would not be listed yet. Keep in mind (again just a general comment-not directed at any site or submission) that not all suggested sites are accepted. Also 4-5 months is not a long time in the submission pool. Site reviews can take any where from a couple of days to several years depending on the category.
My advice is to request the status and see what that tells you and go forward from there.