Hired a contractor. Paid 90% of the invoices sent with evidence of check cashing. Remainder of the balance ($500) in dispute b/c they damaged the property and failed to remedy. They refuse to come back to fix or compromise on the $600 balance due. They filed a CA prelim notice for $5,500, within the required timeframe. -Can you dispute the notice b/c the estimate is extremely inflated? - Since work is not complete, how does a notice work so I can protect my rights with lien filings? - If a lien is filed, what are my defenses to making the filing invalid or arguments that are successful to rule a lien incomplete.