Me and my mates have lots of options for getting stoned depending on the situation.
Our favourite is my little sisters wendy house. It's tiny and we've cotched it out with some chairs, candles and mini stereo speakers and 'cos it's never used we just leave it how it is for any occasion. If we can't smoke there we have a few other locations arond my area such as a playing field nearby which you can sneak into at night and light up in the stands (this is sick when it's raining ).
We barely ever smoke in someones house, although we can anytime at one of my friends, we lives miles away from everyone else.