I filed a lien on a property in FL. The owner did not order the work, the potential purchaser did. The potential purchaser walked away without buying the property and didn't pay our company for the Phase I Environmental Site Assessment. I sent our the required notices to both the property owner and the potential purchaser and then filed a lien on the property which was granted. The owner's lawyer has since sent us a threatening notice that since the owner didn't order the work, (no Notice of Commencement by the owner), our Notice to the Owner in not legal and our Claim of Lien is invalid. That is not my interpretation of FL regs. What is your opinion.