My name is Cole, and about a month ago I moved with my family to a large, ranch-style house in Bend, Oregon. I have had no past experience with the paranormal, so this scared me pretty good.
For the first two weeks, nothing happened in the house, everything was calm and quiet. Two weeks after we moved in there was still quite a bit of packing to do; my bed still hadn't been moved into my room, so I slept on an air mattress on the floor. It was about 11:30 pm, I was messing around on Facebook, my sister was sleeping off the flu, and my parents were watching TV in their bedroom (which was directly next to mine, I could hear the TV). I had just taken my headphones off, and was about to go the bathroom when I heard, clear as day, a knock from the wall behind me. There was no other room behind mine, just the outside, so I got up and looked out the window to see what could've made the noise. I didn't see anything (and the outside of our house is very well-lit, mind you), so I brushed it off as the house settling. Thinking back, it couldn't have been, as the house was fairly new, only a couple years old, and the temperature had remained in the mid-80's up until now.
I think it could not have been any person or entity either, as the house is raised up on a deck about 3-1/2 feet tall, and the knock came from just below the window, which is on the wall about 4 feet up (not including the deck), which amounts to almost 8 feet. I could not have reached that high (I'm short, about 5 feet), not even jumping, and to reach that high someone would have to be at least 6-1/2 feet tall. I know there are people that tall, but you don't come across many.
So, I forgot about it and went to the bathroom (directly across from my room). As I was doing business, I heard another knock, directly behind my head. It sounded slightly muffled, as if it was coming from the other side of the wall, and not the bathroom wall. But the wall between the bathroom and my sister's room is almost 4 feet thick (as is the wall between mine and my parent's room, they are crawlspaces accessible from the basement that make it easier to fix plumbing etc.), so that means someone would've had to go into the basement, somehow climb to the crawlspace (we have no ladder), and knock. I know for a fact that both of my parents were in their bedroom, and that my sister was in hers, and considering I had only been in the bathroom for about a minute, they couldn't have moved fast enough to get there before I got out. And, like I said before, you need a ladder to reach the crawlspace, which we don't have.
I finished up and checked both rooms, my sister was still asleep, and my dad was still up watching TV.
I don't know what this is, and it could have been pipes heating up or cooling down, but there had been no water running for the past half-hour (except the toilet, which had run about ten minutes before I went to the bathroom). I'm still not sure what it was, but I'm trying to figure out. I haven't told either of my parents or my sister, and they haven't had any experiences in the house so far.
Does anyone have any idea what it is?