We had similar problems where Northcutt simply did not ensure important things were done during construction of our home. These led to serious problems within a few months. At first he tried to talk his way out of responsibilty, then argue about them then lastly he refused to fix them. The experience was unbelievable. A client should never be treated this way. Examine the contract and warranty closley. Pay attention to warranty exclusions. Send your builder an temized list of problems in a certified letter, before the warranty expires. Have an attorney send if possible. ** know your rights as a consumer** File a complaint with the state agency that manages his license. In TN its the dept of commerce https://www.tn.gov/commerce/resources-services/file-a-complaint.html Include text messages, transcripts of phone conversations, 3rd party paper work such as estimates to correct the problems. Thier legal council will determine if there is cause to suspend his license until he corrects the problems. Be reasonable. Houses settle some minor changes can occur. Defects like poor or no foundation grading, moisture and mold in your basement or crawlspace, problems with plumbing, electric and septic are serious and should be escalated as soon as they are observed. In my case i worked with state and private companies due to the seriousness and complexity of the problems we had. I have since worked with another builder who understands his responsibility and fixed every problem that was real without a fight.