My builder was supposed to have my home completed by 7-1-2020. The contract did provide a "45 day window" so he had wiggle room. House wasn't done on 8-15-2020 either. Agreed to sign a change order to extend his completion to Friday, 9-18-2020 (today). Today came and went and house isn't completed. And I learned today that the G.C. actually scheduled to have an open house at my property on Saturday, 9-26-2020 ..... without asking me. I just want to be done with this guy. He's breach the contract twice now. I don't want him holding an open house. Given the contract is breached, wouldn't he have had to ask me for permission to do this? How do I get him off this job? If I hire a new G.C., do they have to file for a new building permit?