Originally Posted by dun
I had a contracter come in to do the work there were permits and inspections done throughout the build. I informed him of the creeking he said it was normal but I was wanting a second opinion
You have added a substantial load to the house. There might be some settling issues because of this, but no one here can tell you it's not the result of some connection or support issues not correctly done.
The weight bearing loads should have been carried down to the foundation and main beam support poles.
I don't suppose you took any pictures during the build process?