Normally, that's going to happen in a competitive market. The U.S. housing market is kinda weird due to ample area to build new housing, yet it's just not going to occur in areas like San Francisco or Manhattan without coming at an ultra premium price. South Florida is another animal in and of itself.
Demand for $1 million + homes has soared since the pandemic, although it should be noted the price of real estate has skyrocketed since the onset of the pandemic, e.g. a home that cost $1 million in Jan 2021 is now worth $1.31 million if we index to Case-Shiller. Similarly, a house that sold for $763k is now worth $1 million.
Affordable and low income housing? Not so much. There is an estimated
7 million home deficit.
IMO, housing demand revolves around the ability to qualify for financing. A person who qualifies for a $900k loan is going to pay prime interest, where at the lower end of the market, we are talking about FHA subsidized loans where the borrower can put down 3%, but will be required to purchase mortgage insurance in the case of default. Prior to the pandemic, historically low mortgage interest rates provided additional flexibility in price, but higher rates have eaten into loan allowances on the basis of monthly income.
There's also a stigma associated with low-cost housing, being that the developers are often depicted as slum lords or rent seekers. It's a tougher market for developers unless they are large enough to absorb such flack.
Housing is beginning to develop characteristics of a Giffen good.