This is likely your issue WRT to your projected family contribution. Real estate equity for things other than your primary residence is considered an asset. So if these properties have value, that IS increasing your projected family contribution. AND if any of these are rental properties, the rents are considered income…which may not even have been reflected in your net price calculators.
At this point, just hang in there, and see what happens with your ED acceptance. If the school is not affordable, you will need to decline the admission should you receive one.