I am located in the state of New Jersey and involved (as Plaintiff) in a breach of contract Real estate case. The party who was supposed to buy the property involved has since started action to liquidate their real estate assests in New Jersey, "to move out of state".
As in the past they have used every legal delaying tactic they can to prolong the wait before going to court, I was wondering if it is legal to place a lien on their properties, as there is no way of knowing how far "out of state" they may be planning on moving?

You may need to file lis pendens: lis pen·dens [lis pen-denz] Pronunciation Key -
–noun Law. 1. a pending suit listed on the court docket.
2. the rule placing property involved in litigation under the court's jurisdiction.
3. the principle that the filing of a suit constitutes notice of the claim asserted.
See: Real Estate Blog - Lis Penden defined