Legal Question in Landlord & Tenant Law in California

Since you were on an oral month to month he probably cannot seek late fees since the right to late fees are estaclished by specific provision in a written contract. He can seek the last months rent if you did not pay it. You owe rent until the end of your tenancy, which was through the end of the thirty day notice. He can also seek any additional back rent if you owe it. Moving out does not relieve you of your obligation to pay the prior rent owed. The rental rate is whatever you had agreed to pay. He cannot charge whatever he wants regarding the rent owed.