What are the differences? Paychecks.. The streets are public because they are upkept and kept proper by the street using persons, mostly tax payers. General tax payers do not pay to have the grounds at a hotel resort upkept. That property is upkept by that hotel company. So if as a citizen, you desire to help upkeep public tax dollar upkeep(s), properly, you are allowed. But to volunteer your good services on private property, you might be asked to not extend your graces. Parks belong to State under City and County. But nonetheless public. Not like the public library but like the public roads. Why? Public librarians get paid city/state dollar(s) as well as parks and recreation workers. But city and county can't really deny the legal documented citizens and persons from keeping their community well ordered, right. They can; however, ask any to quiet down or any other thing, including no car washing in the library's parking lot/structure(s). However as a city code; is electrical powered machinery, such as electrical drills and saws, allowed to be used in privately owned, opened apartment parking lots, less than 10 feet away from the public sidewalk? It could prove dangerous if bits and chips fly off and accidently hit a passerby. Besides, for any battery operated electric saw to be that needed? I don't know.