There might be something missing from Maslow's Hierarchy of Needs: space. Either that or else it's very subtly implied by "security of property". I say this because I've heard that the most common dream among residents of Manhattan is that their apartments have whole other rooms they never knew existed. This says to me that they feel crowded in their normal daily lives, and their subconscious wishes for more space. The reason this would be overlooked most of the time is that there are only a few places on Earth where the crowding is that severe, so most people have enough space not to feel overcrowded most of the time.
It makes me wonder what is the actual space that people need, psychologically, to feel right about it. Not in the short term - unless you're agorophobic or claustrophobic, you can stand almost any size space for a short time. Not even the space required to produce the food and energy needs of a person. I mean in the long term, what is the minimum living space that a person can realistically put up with? Is that affected by living with other people? Does it matter how much time you spend in your house as opposed to outside or at work? Maybe we're all living on a sliding scale of claustrophobia, and the more time you spend in smaller spaces, the less comfortable you feel.
Mokalus of Borg
PS - Those psychological sliding scales seem to show up everywhere.
PPS - Or at least everywhere in our heads.