Well I think once the market is not the determining thing, what's valued in a home and what's considered convenient or nice or luxurious would be completely different. I think it's most likely that people would want to just re-arrange what we already have as a first step just so that people aren't cramped together or homeless or living in unsafe or unhealthy places. But I also think that after some other basic things, housing and creating new communities would be a big priority for people. I also don't think that new communities can't be better and nicer for people AND less harmful, less inefficient, less resource-wasting, and communities less alienating. What's convinient or luxurious now is a mini-castle because most reproduction service is done privitly in autonomous homes or family units: most daily cooking, laundry, entertainment, recreation, and so on are done in the home and so the more means someone has, the better wages etc, the bigger the house with the large kitchen, the multiple garages, the entertainment center, the pool, the laundry room, the home office, etc. But this is only luxury in capitalism.
More people could have access to nicer and better and more well maintained things if a lot of this activity was made social rather than accomplished autonomously in induvidual homes. I mean think about how in suburbs every family is in their own house turning on their own ovens to cook relativly small meals, watering and mowing induvidual lawns, etc. Today the rich hire people to do this, the less rich do it themselves, and many people just have to do without. But it could also be accomplished more communally, with common kitchens which would allow people to have better prepared food more easily with less energy and labor wasted and then induvidual homes wouldn't need massive kitchens, but just maybe a small set up for when you want to make something yourself or whatnot. Transportation in another big thing in the US which would require structural changes but I think could be done in ways that both decrease the need for autos while increasing our individual geographic mobility and ease of travel. Many workers have cars and they use it to run errands and go to work and otherwise it's a big hunk of steel sitting on the road, requiring maintenance and cleaning and a garage and so on. It's basically a necessity for suburban type development, but reorganization of how we set up communities could mean better transportation, more ease for daily mobility and so on without every family either having to buy cars or be stuck at home.