Over the later Middle Ages, great households shifted from retainers bound by feudal ties to servants paid wages. Service itself became valued more than the honor and rank of the people giving it. Once a bond becomes a paid job, what counts is the work done, not who you are.
Great households once moved constantly between their estates, eating their way through what each home farm produced. As markets became the main source of food and supplies, they could stop travelling and settle in fixed residences. Where your supplies come from shapes where you are able to live.
Elite houses once put formality and defence first. Over time they were rebuilt for comfort and privacy instead. Once a household no longer has to guard against attack, it starts dividing space for private ease rather than public display.
As great households grew, the standards of what counted as magnificence kept rising. The rules of etiquette that governed them grew more and more elaborate. Showing rank becomes an ever more demanding performance, because each refinement becomes the new baseline.
The great household was not just a private home but the base from which its lord conducted politics. It also supported education, music, and the making of books, and it welcomed outsiders as guests. Hospitality and domestic routine were the working machinery of power and culture.