The book is relatively old (I read part of it around 2003 but it was published way before). The book was a young adult book that involved crime and a runaway that lived with two adults in what is either an abandoned factory or airplane hangar. The cover of the book I believe featured someone playing pool on it. The title might have been Me & (I can’t remember the rest). It was recommended to people that liked the Rag and Bone Shop and it was similar to the Westing Game. One thing I do remember clearly is that in the introduction the main character talks about how his dad can tell who has committed a crime or who has been to jail by just looking at them.
Could this be Otto Salassi: Jimmy D., Sidewinder and Me?
Yes, that is the correct book!