Economics for the Curious

Why Is Housing So Expensive?

How prices work, the policies that push housing demand up and hold supply back, and why Tokyo rents are a fraction of New York’s

Figures current as of mid-October 2026

9 min read

How Prices Work

When rent or a house payment eats half a paycheck, it’s easy to blame greedy landlords or builders. But landlords were just as eager to earn money in 2000, when housing cost far less compared with income. To explain a change in prices, look for what changed. Start with how economists describe a market economy.

In housing, high prices are a signal to build. When more people want to live somewhere, rents rise, building becomes profitable, and new homes bring prices back toward the cost of building them. That only works if builders are allowed to respond. When rules limit how many homes can be built, extra demand can’t turn into more homes. It turns into higher prices instead. Economists call how easily supply can respond the price elasticity of supply, and in housing, much of it is set by government.

Work through five questions whenever a price changes:

The Price Detective Checklist
The Price Detective ChecklistWhat to look forIn the housing market
1. Supply and demand. What shifted, and how strongly do buyers and sellers respond?Shifts in supply or demand; price elasticities of demand and supplyRemote work, years of too little building, slow construction
2. Government. Did a price control, tax, subsidy, quota, or tariff change?Policies that push demand up or hold supply backTax breaks for buyers, zoning limits, slow permits, tariffs on lumber, rent control
3. Market power. How competitive is the market?Number of sellers, barriers to entry, and how many alternatives buyers haveShared rent-pricing software, large investors in some cities
4. Price discrimination. Do different buyers pay different prices for the same thing?Price differences by customer that costs don’t explainOwners with 3% mortgages vs. new buyers at 7%; old leases vs. new ones
5. Inflation. Is it one price, or nearly all prices?Monetary policy of the Federal Reserve and fiscal policy of the federal governmentMortgage rates that rose as the Fed fought inflation

Start Here: What Changed?

Home prices have grown much faster than incomes. Compare then and now:

What Changed?: Measure
MeasureThenNowChange
Home prices (national index)100 (2000)337 (2026)more than tripled
Median household income$41,990 (2000)$87,460 (2025)about doubled
Median price of a new home$165,300 (2000)$393,300 (2026)about 2.4 times
30-year mortgage rate2.65% (2021 low)7.40% (Oct. 2026)nearly tripled
Monthly payment, median new home$1,426 at 2.65%$2,451 at 7.40%up about $1,020
Renters spending 30%+ of income on housing46–51% (2006–2023)49% (2024)about half, every year
Estimated U.S. housing shortage3.8 million (2020)3.7 million (2024)little progress

Home price index: January 2000 = 100. Monthly payment is principal and interest with 10% down.

What changed, and what didn’t? People still want homes, and owners and landlords still want to earn money. What changed is that for years the country built fewer homes than it needed, so each new wave of demand pushed prices up instead of bringing new homes.

Running the Checklist on Housing

1 Supply and demand: more buyers, too few homes

  • Demand jumped. When the pandemic made remote work common, millions of people wanted more space. San Francisco Fed researchers estimate the shift to remote work explains more than half of the 18.9% rise in inflation-adjusted U.S. home prices from 2019 to 2023.
  • Supply fell behind. Freddie Mac estimates the country was short about 3.7 million homes in 2024. Builders started homes at an annual rate of about 1.2 million in September 2026, 7 percent fewer than a year earlier.
  • Supply responds slowly. A home can take a year or more to permit and build, so even when prices rise, new homes arrive late, and in some places they aren’t allowed at all.

2 Government: policies that push demand up and hold supply back

Many policies affect housing prices. Some make buyers able and willing to pay more. Others limit how many homes can be built or make building cost more. Each one, alone, can look reasonable. Together they push prices up from both sides.

Running the Checklist on Housing: Pushes demand up
Pushes demand upHow it raises pricesWhat the evidence shows
Mortgage interest and property tax deductionsTax breaks for homeowners let buyers bid more for the same home.When Congress shrank these breaks in 2017, Cleveland Fed researchers estimated home values would fall about 5.7% on average.
Very low interest ratesThe 30-year mortgage rate fell to 2.65% in 2021. Lower payments let buyers bid more.A one-point rate drop raises prices about 7% on average, most where building is hard.
Running the Checklist on Housing: Holds supply back
Holds supply backHow it raises pricesWhat the evidence shows
Zoning limitsRules that allow only single-family homes, require large lots, or cap height and density limit how many homes can be built.Los Angeles was zoned for 10 million people in 1960 but only 4.3 million today.
Slow permits and parking mandatesLong reviews, required parking spaces, and fees add time and cost to every home.Federal housing officials cite estimates that regulation adds more than 25% to the cost of a new home.
Tariffs on building materialsTaxes on imported lumber, steel, and cabinets raise the cost of building.Canadian softwood lumber faced combined duties and tariffs of about 35 to 45% in 2026.
Rent controlCapping rents on existing apartments gives owners a reason to convert or sell them.In San Francisco, covered landlords cut rental supply about 15%, raising rents citywide about 5%.

3 Market power: are landlords colluding?

  • Shared pricing software. In 2024 the Justice Department sued RealPage, whose software used landlords’ private rent data to recommend rents. In a 2025 proposed settlement, RealPage agreed to stop using landlords’ nonpublic data to recommend rents. The department also sued six large landlords.
  • Large investors. Large investors own about 3% of single-family rental homes nationwide, but about 25% of those in the Atlanta area, according to the Government Accountability Office.
  • The supply test. In Austin, apartment building boomed, and asking rents fell for 23 straight months through early 2025, ending about 7% below their 2022 peak. Austin landlords didn’t become less interested in profits; supply caught up.

4 Price discrimination: insiders and outsiders

In housing, people pay very different prices for the same thing depending on when they got in. A family that bought or refinanced at 3% pays far less each month than a newcomer borrowing at 7%. Many of those owners stay put rather than give up a cheap loan. Federal Housing Finance Agency researchers estimate this “lock-in” prevented about 1.3 million home sales from 2022 to 2023 and raised prices about 5.7%. Tenants in rent-controlled apartments pay less than newcomers, too. In each case, outsiders pay more.

5 Inflation: the interest-rate squeeze

Shelter is about a third of the consumer price index. Shelter prices rose 3.2% in the year to September 2026. When the Federal Reserve raised interest rates to fight inflation, mortgage rates rose to about 7%. On a median-priced new home, that adds about $1,020 a month. Higher rates also make it costlier for builders to borrow, so they build less.

What Can Government Do?

What Can Government Do?: Tool
ToolHow it worksThe catchWhat the evidence shows
Allow more homes by rightLets apartments, townhomes, and smaller lots be built without special approval.Neighbors lose some say, and roads, schools, and water systems must keep up.New buildings lowered nearby rents about 5–7%
Faster permits, fewer mandatesShortens reviews and ends required parking and some fees.Less public review of each project.Backed by advisers to presidents of both parties
Cut tariffs on materialsLowers taxes on imported lumber, steel, and cabinets.U.S. lumber and steel producers lose protection.Lowers the cost of every new home
Help for buyersDown-payment aid and tax breaks for homeowners.Where supply can’t grow, much of the help ends up in higher prices.Raises prices most where building is hard
Rent controlCaps rent increases on existing apartments.Gives covered tenants stability; owners may convert or sell units.Rental supply fell about 15% in San Francisco

WATCH Price Ceilings: Rent Controls and How Price Ceilings Create Shortages and Lower Quality (Marginal Revolution University)

READ How Do People Respond to Prices?, sections ④ and ⑤. When rules keep rents or building from adjusting, lines and lower quality do the rationing, and prices show up in where people choose to live.

Fair Challenges

Decide what you think of each challenge first, then open the response.

“Greedy landlords are colluding to raise rents.”
Partly true: pricing software let landlords use rivals’ private data, and RealPage agreed to settle in 2025. But greed didn’t start in 2020, and where building boomed, as in Austin, rents fell for nearly two years. Collusion can push rents up; a shortage keeps them up.
“Wall Street is buying up all the homes.”
Investors own about 25% of single-family rentals around Atlanta but about 3% nationwide. They buy where shortages push prices up, so they magnify shortages more than cause them.
“Rent control is the answer.”
It gives tenants who have it stability and protection from sudden increases. But in San Francisco, covered landlords cut rental supply about 15%, raising rents about 5% for everyone else. It shifts costs from current tenants to future ones.
“New apartments are just luxury units.”
New buildings are often expensive, but they still help: in low-income neighborhoods, nearby rents ended up 5–7% lower than they otherwise would have been, as higher-income renters left older units for others.
“Immigration is driving up rents.”
Immigration equal to 1% of a city’s population raised rents about 1% in one study. But immigrants are also about a third of construction trades workers, so fewer immigrants means less demand and fewer builders.
“Just cut interest rates.”
Lower rates cut payments and free locked-in owners to sell, but they also let buyers bid more. In 2020–21, rates hit record lows and prices jumped. Where supply can’t grow, cheaper loans mostly become higher prices.

LISTEN Why Housing Is Artificially Expensive and What Can Be Done About It (with Bryan Caplan) and Fixing Sick Cities (with Alain Bertaud) on EconTalk, hosted by Russ Roberts, with transcripts

The Normative Question

Economics can show what zoning, tax breaks, tariffs, and rent control do to prices and how many homes get built. It can’t decide who should control what gets built in a neighborhood, how much weight to give current homeowners, whose wealth is tied up in their homes, versus newcomers who can’t afford to move in, or how much a city should change. Every choice, including keeping today’s rules, puts the burden on someone.

Key Terms in Plain Words

Price elasticity of supply
How much the amount built responds to a change in price.
Housing shortage
Fewer homes than the number of households who want them.
Zoning
Local rules on what can be built and where.
By right
Allowed without a special vote or approval if it meets the rules.
Minimum lot size
The smallest piece of land a home may sit on.
Rent control
A legal cap on rent or rent increases.
Capitalization
When a subsidy or tax break shows up in the price of a home.
Lock-in effect
Owners staying put to keep a low mortgage rate.
Cost-burdened
Spending 30% or more of income on housing.
Filtering
Older homes becoming cheaper as newer ones are built.
Mortgage interest deduction
A tax break for interest paid on a home loan.
Algorithmic pricing
Software that recommends prices, sometimes from rivals’ data.

Sources