Strip away the politics and the housing shortage reduces to arithmetic.
This map shows the same ratio across the country: far fewer affordable homes than renters who need them.
The U.S. currently has 100 extremely low-income renter households competing for just 35 affordable and available rental homes.
🏠🏠🏠🏠🏠🏠🏠🏠🏠🏠
🏠🏠🏠🏠🏠🏠🏠🏠🏠🏠
🏠🏠🏠🏠🏠🏠🏠🏠🏠🏠
🏠🏠🏠🏠🏠👤👤👤👤👤
👤👤👤👤👤👤👤👤👤👤
👤👤👤👤👤👤👤👤👤👤
👤👤👤👤👤👤👤👤👤👤
👤👤👤👤👤👤👤👤👤👤
👤👤👤👤👤👤👤👤👤👤
👤👤👤👤👤👤👤👤👤👤
🏠 = Affordable and available home
👤 = Extremely low-income renter without one
That leaves 65 households forced into units priced above what they can afford.
I’m not claiming why the shortage exists.
I’m pointing out what happens once the ratio breaks this badly.
One structural constraint matters:
Extremely low-income renters simply cannot pay the rents required to produce new housing in the private market.
So the market underproduces units at that price level.
When renter households exceed affordable and available supply,
competition spills upward into higher-priced units.
That cascade produces:
- severe rent burdens
- overcrowding
- displacement
Nationally the shortage is about 7.2 million affordable and available rental homes for extremely low-income renters.
No intent required — this is structural.
When the number of people who need housing exceeds the number of affordable units by this margin, prices stop being the key variable.
Availability becomes the constraint.
If the units don’t exist, affordability cannot emerge.
Harris’s plan tried to move both sides of the constraint. More overall housing supply (target of ~3M new homes) plus funding aimed specifically at affordable rental construction. The second part matters most for the 35-per-100 problem, because extremely low-income rents usually don’t cover the cost of building new units without subsidy.
We’ve seen this mechanism before. When Black families were restricted to certain neighborhoods in northern cities, limited access pushed rents up, housing quality down, and overcrowding up. Constrained access does that. What was once concentrated in segregated pockets is now a nationwide phenomenon.