This is a particularly interesting thread to me as we are contemplating our move to a downsized forever home.
We currently live in 3,000 SF on two floors. 3BR 2.5ba. We built the home in 1991. The size of our home is average for the town we live in, with many much larger homes. We raised 2 kids here who are now successfully launched, but do not live locally. We resisted the urge to update spacewise 20 years ago once we had reached a certain level of financial security. We chose instead, to gut renovate our kitchen, and master and second baths, adding no space, but which most would consider resulted in high end increased home value that was consistent with our neighborhood. In recent years, we have joked that if we could eliminate the formal living room and formal dining room (both infrequently used)from our much loved house, it would be perfect.
So now we are thinking of moving, primarily because we want/need a 1st floor MBR. DH has Parkinsons, so most frequently used living space needs to be on 1 level for future handicapped access mobility. This includes office space for each of us. And I do like a den for TV viewing, separate from a great room with a fireplace. Guest bedrooms do not need to be on the main living level, but are important as our kids are not nearby. I honestly think our needs/wants won't decrease our space needs that much, perhaps 2,400-2,500 SF.
So I emailed all of this criteria today, to a realtor who will be promoting a recently approved development in our town that will be a single family dwelling condomium community, complete with exterior landscaling/snow removal taken care of by the HOA. Just what we are looking for.