We are a small swimming pool maintenance and repair company. We were contacted by a homeowner to help with a inground hot tub remodel. Are part of the job was just to replace all of the old equipment with new equipment and make sure everything is working correctly. We also helped finding a company to do the replastering. The owner signed the bid and gave us 50% down which was used to pay for half of the plaster and the equipment. The job is now completed and the owner is refusing to pay the rest of the bill. He is trying to say he wants it inspected and that we should have pulled a permit. Which I have verified we didn’t need to do, since no upgrades were done. Because we didn’t file a pre- lien within 20 days of starting the job do we have any other options to file a Lein now or do we have to take him to civil court?