Now we're getting the pendulum back to the midpoint!
Oh, the other thing about multiple families living in close communal quarters is, it's a wonderful way to spread disease, something we can't overlook in the age of emerging diseases and drug resistant strains.
Anyway...
Homes should be built on the basis of two parents and two children. Families that want to overpopulate should have to deal with the side-effects directly.
One of the things I find absurd about modern architecture is the focus on large open indoor spaces for entertaining. Entertaining is a public function, therefore it can go outdoors, or under an awning or temporary shade-structure in the rain.
Dining rooms are archaic; eat-in kitchens are more sensible and can accommodate family dinners plus a couple of guests. A small living room with a moderate couch and a couple of chairs is sufficient for family gatherings, and will lend itself to more reasonably-sized (smaller) media systems. (LCD TV uses less energy than a CRT; plasma uses more, and an audio system for a small room uses very little power.)
Laundry should be accommodated in the kitchen, as it is in Europe. Lugging laundry baskets up & down basement stairs is a major hazard for trip-and-fall injuries, no small concern when medical care becomes more scarce & expensive. Instead the (high-efficiency) washer can go under the kitchen counter, and a clothes line (outdoor or indoor) can be used for drying. The basement should be reserved for storage, workshop, possible teenagers' living room area, and the latter can double as a fallout shelter (yes, really).
Aside from that, most indoor space should be designed for privacy, with multiple smaller rooms rather than few larger ones. Acoustical considerations can't be ignored as they are at present. Multiple smaller rooms also make for more efficient lighting: lower wattage bulbs will provide equal light in a smaller room, to that provided by higher-wattage bulbs in a larger room.
And last but not least, climate control: heat or cool the rooms where people are hanging out and close the doors on the other rooms. Smart heating controls could allow far more flexibility and greater comfort at much lower energy demand, by simply switching heat & cool on and off in each room according to the hours of the day.
People are more likely to adapt to a scaled-back material lifestyle if they at least have the ability to retreat from the world into a little nest that is personal and private and under their own control.





