You might be able to do a title search at your local county recorder online or call a title company to ask them if they can do a search for you.
You are welcome and that is the best bet to find out.
It is really difficult to get a 2nd loan on a property, let alone a third loan/HELOC. Especially in this economic climate.
In my opinion, the only way to cash in on any equity is to sell high while the market has not completely tanked and then buy again in 2 years when property values are 50% of what they are now.