>>13075650Lots of things could be at fault but they're all leading up to the same thing: energy from passing vehicles is being transferred into the structure of your house. Maybe it's always been happening and the fasteners in your house have simply loosened up enough for you to notice. But it might also be that someone dug a new ditch somewhere and that's impacting how energy is being transferred through the ground. Whereas it used to primarily go to a side of your house, it is now going under your house, which is now picking up some of the energy. You might not ever know what change caused this.
Head on over to /diy/ and see if they have any practical solutions for what you can do before something in your house gives way and you have a disaster on your hands (or on your head).