1. Was the investment company representing you as a fiduciary or were you representing yourself in the transactions?
2. Did property values decrease in the last two years (where the properties are located) or do you think they remained stable or appreciated?
In any event, an attorney can answer your questions about whether or not you have a case worth pursuing. Contact an attorney in the area where you made the investment and be prepared to pay for a legal advice unless the attorney is willing to give you a free consultation.
However - no one can guarantee the "value" of a property going forward - and if the properties have decreased in value since you purchased them - that may have nothing to do with the Investment Company that sold you the property, but due to a change in market conditions.
However if the Investment Co. "knowingly and willfully" misled you on the true value of the properties at the point in time when you purchased them - then you probably do have grounds for legal redress. The hard part will be "proving" that the Investment Co. in question "knowingly and willfully" misled you.
This is why it's absolutely critical that whenever you are making a large purchase whether it be an automobile or real estate - that you perform "due diligence" and by that I mean PHYSICALLY visiting and inspecting the property before your purchase.
I would never DREAM of even buying an automobile without physically inspecting it and having in further inspected by a reputable mechanic - let alone unseen pieces of real estate out-of-State.
Good Luck !