Attorney Chen has provided you with a very thorough answer. You should document the situation with information as to the names of the contractors and take some photographs. I would suggest that you let your landlord know of the reasons for your dissatisfaction in writing. Once apprised of the level of your discomfort, your landlord may be willing to provide some degree of compensation via a rent reduction or lease termination. If not, you have the basis for a suit in Court.
In California, the DMV will issue a letter of non-compliance and mail it to your last known address. If you fail to correct the matter a "bench warrant" will issue. If you are stopped for any reason by the police, a background check will show you have an outstanding warrant. The odds of you being taken in to custody increase, dramatically. The renewal of your license could also be impacted.
I would encourage you to contact the DMV and correct the report ASAP.
Based upon the facts you have presented, I am unable to ascertain how you would be liable for damages while simply living in the home. More facts would be needed to effectively answer the questions regarding liability on your part.
I would encourage you to speak with an Insurance/Business attorney in your area. They could obtain additional facts and hopefully assist you.
Attorney Doland is correct, the voidability issue will revolve around the facts of the hiring. You seem intent on the minor being labeled an independent contractor. Signing a document that attaches the IC label is not always controlling. Again the facts will determine the status of the services provided.
The facts provided make it difficult to provide a more detailed response.
Mechanics Liens must be filed and perfected in a timely manner. If the statutory requirements are not complied with, the lien is invalid. As my colleague pointed out, sending a letter to counsel of the invalid lien is a step towards having it removed. However, before proceeding further I would encourage you to consult with a Construction/Litigation attorney to ensure your interests are protected. Use Avvo to locate a great attorney in your local area!
As the building owner you would be responsible for complying with the ADA provisions. A local Business attorney will be able to advise you as to the issues regarding compliance. It is indeed unfortunate that some attorneys utilize these statutes to extort nuisance settlements from the unwary.
The limited facts provided make it difficult to effectively advise you on how to terminate the contract. If the contract was in writing, there should be terms describing the services to be provided and the amounts to be paid over particular period of time. There should also be language covering the remedy for a breach of those terms. The ability to terminate may be limited by a referral to arbitration/mediation. In short, there are a myriad of issues and the absence of the specific terms...