Thanks for answering my question!!! We live in Arizona. We had flooding at a house we had listed for sale. We called a mitigation company and they had a sister company that did the restoration side of work. We filled out contract papers for the mitigation company, and after their work was done they sent an invoice and we paid it in full (we are working with our insc. company as well). Their sister company began the restoration work on/around 6/28 but once I got the invoice from the claim adjuster, I contacted the restoration company and advised them to stop all work on 7/3. On 7/12 they emailed a 20 day pre-lien notice. We allowed them a chance to re-price the project to keep the job and met on 7/15 to review their adjusted #'s. In the end their numbers were too high and we decided to use a different GC, and advised them of this on 8/5. Within minutes of advising them of this, they replied that there was HVAC work done that they forgot to add on the initial invoice, and as we were now acting as the GC, they aren't waiting for the insc. company to pay out and want their $ asap. The amount of their initial bill (sent after I had them stop all work) was $11,189.65. When they provided us the second quote that showed amount of their current work done and reduced rate for work yet to be done...the total for work completed matched the $11,189.65. On 8/14 they sent the new invoice which was $2433.00 more and said if not paid within 7 days they will file the lien. I looked on the invoice they sent the adjuster and it did included their charges for the duct work which only totaled $247.46. As I couldn't for the life of me figure out where the extra $2433 came from, today 8/15, I asked for a invoice that broke down all charges and am waiting for that to review. I advised I was o.k. with the 7 day period to file a lien if we didn't pay, but stated that I believed the seven day time frame should begin from the date we agree on the total amount due. I have no signed contract or paperwork with this company. (they emailed me a work contract but it has not been signed at this point). I have been trying to familiarize myself with my rights and the legal details around a lien. I also recall reading somewhere that if the amount changes by more than 20% Arizona requires another pre-lien notice be sent (and their price increase is 21.74 %) and they did not send a second pre-lien notice. I feel they suddenly "remembered charges for work done" the minute we decided not to use them to finish the remaining work as up until that point there was never mention of it. Please advise what my protection rights/legal rights are at this point with no signed contract and me disputing the additional new charges? Do I have recourse to prevent the 7 day time frame until they file the lien until we can agree on the amount due? Thanks for any insight and guidance you can provide!