This bee or hornet seems way too big for where I live

Sorry I killed it, but it was in my house. This guy is maybe twice the size of a yellow jacket. I live in a suburb of Buffalo, NY and I've only ever seen carpenter bees this size. I have a hive in the ground on my lawn and I might have a yellow jacket or hornets nest on my property (I generally just let them bee, pun intended) but I've never seen anything like this before and I have no idea how it got in the house