MECHANIC'S LIEN FOR TENANT

I need to find out if I can put a mechanic's lien on the property I currently rent. My landlord has decided to sell at the last minute, not giving me a minute of concern and has had an attorney send me a letter stating I must be out by January 1 as I agreed or they will take me to court. I never agreed to be out by January 1 and my lease is not up until March 08. The only discrepancy is the landlord agreed to waive my rent if I would allow the house to be shown....I agreed to this but only after January 1 when my children & grandchildren have returned to their homes in another state. I have gone so far now as to cancel everyone's trip to my house & to disappoint my grandchildren but I cannot have them here when she is causing trouble & threatening me. She has turned everything around on me now & is trying to get me out by the 1st because I didn't pay December's rent, although she agreed to that and any subsequent months even past my lease date just to keep someone in the house until it sold. I have done many repairs & even put in a new sod yard so I would like to recover some of the time & money put into upgrading her property. I want to put a lien against the property so she cannot sell it until I release it. I don't consider it revenge, I consider it justice for the renter who has cared for the property as if it were her own. I live in California and have tried to find how & where to file or even if I can but can't get a definitive answer. I guess I am soon to be homeless as she has threatened the sheriff will remove me so I certainly cannot afford an attorney, so if someone has any advice or can point me in the right direction, I would be most grateful.