Agreed with inspectorD on the floor joist shrinkage.
Agreed with Mudmixer on the floor shrinkage.
I know for a fact that Taylor doesn't build anything fast.
Taylor uses the cheapest contractors out there and then bargains until they get them to take a lower price. The project managers have their hands tied in a way and can't use contractors known for excellence in workmanship. They're limited by the amounts Taylor will pay, and who is willing to work within that budget. Once the settling and the shrinkage has subsided, Then you have the finished house that you will have to deal with.
Over the period of time while the house was being built, the more rain or snow you had, the worse the shrinkage will be. I've been under MANY Taylor homes with jacks and shims. Usually the cracks show up between the ceilings and the walls.
I would also LOVE to know what part of the state you are in and more details about the construction of your home.
What were the temperatures when the floor was poured and how wet do you think it was? These could be factors in what to expect next and how to approach the repairs.
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