Economy
What Is the Housing Crisis and Why Cant Young People Afford Homes?
The housing affordability crisis is one of the few economic problems where the basic analysis is not particularly contested among economists. The solution is clear. The obstacle is political.
The problem: not enough homes where people want to live. The cause: zoning laws that prevent building them. The political obstacle: existing homeowners who benefit from scarcity.
The Numbers
In the 1980s, the median US home price was approximately 4 times median household income. Today it is approximately 7-8 times median income nationally and significantly higher in major metro areas — over 10x in cities like San Francisco, New York, and Los Angeles.
Monthly mortgage payments on a median home at 2022's 3% mortgage rates: approximately $1,200. The same home at 2023-2024's 7%+ mortgage rates: approximately $2,100-2,300. A 7-8% increase in interest rates created a 75%+ increase in monthly payment.
The "lock-in effect" compounds this: homeowners who bought at 3% mortgages have no incentive to sell, because buying another home requires taking on a 7% mortgage. This has frozen inventory at historically low levels, maintaining prices even as affordability collapsed.
The result for young people: the median first-time homebuyer age hit 40 in 2024. In the 1980s, the average first-time buyer was in their late 20s.
The Zoning Problem
Most US residential areas are zoned exclusively for single-family housing. This means the only thing you can legally build on a residential lot is one house.
The consequences of single-family-only zoning in high-demand areas:
- Apartments, condos, townhouses, and duplexes are illegal by zoning even if the market would build them
- Limited supply chases high demand = high prices
- Workers who take jobs in high-demand metro areas face either extremely high housing costs or extremely long commutes
- Young people who can't afford homeownership in single-family zones have limited rental options (also constrained by zoning)
Why does this zoning exist? Because existing homeowners have created it and vote to maintain it.
A homeowner who bought a house in a single-family neighborhood benefits from restricted supply: fewer competing homes, maintained demand, rising values. Changing the zoning to allow multi-family housing threatens neighborhood character (their preference) and potentially their property values (their financial interest).
Local zoning decisions are made by city councils, planning boards, and zoning boards whose meetings are attended disproportionately by homeowners with direct financial stakes in maintaining restrictions. Renters and future residents (who don't yet live there) have no vote and limited voice.
The Political Alignment Problem
Housing supply reform is unusual in American politics: it genuinely crosses party lines in inconvenient ways.
Liberal cities like San Francisco and New York have some of the most exclusionary zoning in the country. Their progressive city councils respond to neighborhood associations dominated by wealthy homeowners who vote reliably and show up to planning meetings.
Conservative suburbs have their own restrictive zoning, often motivated by concerns about property values and demographic change.
The housing reform movement ("YIMBY" — Yes In My Backyard) has attracted both progressive housing advocates and libertarian free-market economists, creating an ideologically odd coalition.
Some progress: California has passed laws legalizing duplexes on all single-family lots and limiting local restrictions on apartment construction near transit. Montana, Oregon, and several other states have enacted similar preemption laws. Early data shows permitting increasing in these states.
Whether this reform movement can overcome the political power of existing homeowners — who are the most reliable voters in local elections — is the central question. The economics are clear. The politics are hard.