We have just recently put an addition onto our house. We paid our contractors as soon as we got the bill, in full. Our contractors have not paid for the building material for our addition. Now we have a few companies putting liens on our home for the bills that our contractor didn't pay. What can we do to fight this? I have the bill of sale from our contractor and the check that I paid with. Any advise would be very helpful!

Yes they can place a lien on your home if they have not been paid even though you have proof of payment to your contractor ( the safe way to insure that the supplier is paid is to pay with a check made out to both contractor and supplier or to ask for a lien waiver from the suppliers and anyone who supplied labor to your job)
I would suggest to call the State Board of Contractors and file a formal complaint as well as file a small claims against him. Good luck, Mike

Actually they may not be able to do so. If their contract was with the contractor then they should be going after the contractor not you. You have no relationship with them.

In any case you need to sue the contractor for the not paying them

We have just recently put an addition onto our house. We paid our contractors as soon as we got the bill, in full. Our contractors have not paid for the building material for our addition. Now we have a few companies putting liens on our home for the bills that our contractor didn't pay. What can we do to fight this? I have the bill of sale from our contractor and the check that I paid with. Any advise would be very helpful!
My husband has been researching this on the computer. He found lien laws for our state that says the supplier has 90 days from the time material was purchased to file a lien. All of the purchases have been beyond this time frame. Has anyone heard of this law? I guess we just need to take it to court.

If he found statutes then go to court and cite those laws.