Depends on how big you want to grow, my little stealth grow could be torn down in 10-15 mins and it would look like a shiny cabinet if they actually opened it. If I put a lock on it they wouldn't even know (and I wouldn't open it). I don't rent, but we do have guests over regularly that I would not care to broadcast my grow to and you could be in the room I grow in and not notice.
Could have easily made it a 2x4, once you start getting bigger it would get harder to disguise
well, its my choice to pick whatever land lord i have the option to choose, from ill pick the one with the decent property, and inspections far in between, if any at all. could work around a planned inspection i suppose, would just be annoying.