When housing economists search for natural experiments — situations that approximate controlled conditions to isolate the effects of land-use regulation — they often end up in the same place: Houston, Texas. America's fourth-largest city, and uniquely among major metros, a city without a traditional use-based zoning ordinance. For decades, Houston's housing market has operated without the rigid classification of land into residential, commercial, and industrial districts that governs nearly every other American city. The results constitute one of the most instructive data sets in the economics of housing.
In 2025, Houston's housing costs were 20.2 percent below the national urban average — and a remarkable 50.8 percent below the average of the nation's most populous metros, according to the C2ER Cost of Living Index, compiled by the Greater Houston Partnership. While San Francisco buyers pay a median price exceeding $1.2 million and New York families pay north of $750,000 for a modest home, the median sale in Houston runs approximately $330,000. These aren't different points on a single spectrum. They represent different economic regimes — one in which supply can respond to demand, and one in which it cannot.
What Houston Has — And Doesn't Have
A common misconception requires correction before going further. Houston is not a regulatory vacuum. The city enforces building codes, fire safety standards, environmental rules, and setback requirements. What it does not have is use-based zoning: the formal classification of land into designated districts that restricts what can be built where. Instead of government-assigned uses, Houston relies primarily on private deed restrictions — voluntary contractual covenants negotiated between property owners — along with minimum lot size standards that were themselves significantly liberalized in 1998.
The distinction is economically decisive. Use-based zoning is the vehicle for floor-area-ratio limits, density caps, height restrictions, and the rigid single-family designations that prevent multifamily construction on millions of acres of urban land nationwide. When a city council sets a zoning map, it is not merely organizing land use. It is imposing a legal ceiling on the number of homes that can exist within its jurisdiction. Remove that ceiling, and the price mechanism can perform its core function: directing resources — in this case, construction labor and materials — toward their highest-valued uses as signaled by market prices.
The Supply Response: A Nation-Leading Metric
The market's response to Houston's relative freedom has been unambiguous. In 2023, the Houston metropolitan area led the entire nation in residential building permits, according to data from the U.S. Census Bureau's Building Permits Survey — a figure that includes the full run of single-family homes, townhomes, duplexes, and apartment buildings that Houston's regulatory environment allows to be built side by side. By 2024, Houston ranked second nationally, behind only the Dallas-Fort Worth metro — another low-restriction Texas market — per Census Bureau permit data.
The state-level picture underscores the pattern. Census Bureau Building Permits Survey data show that Texas authorized 17.9 new residential units per 1,000 existing homes in 2024, compared to just 5.4 per 1,000 in New York and 3.7 per 1,000 in Illinois — states whose major metros operate under some of the nation's most restrictive zoning regimes. The gap between Texas and Illinois isn't explained by population growth alone. It is explained by what builders are legally permitted to build.
Prices respond accordingly. Houston's house price index, tracked by the Federal Reserve as the All-Transactions House Price Index for the Houston-The Woodlands-Sugar Land MSA, has increased far more modestly over the past two decades than comparable series for San Francisco, New York, or Los Angeles — metros where supply constraints transform increased demand directly into price appreciation rather than new construction.
Hayek's Knowledge Problem, Applied to Land
Friedrich Hayek's foundational insight — set out in his 1945 paper "The Use of Knowledge in Society" in the American Economic Review — was that no central authority can ever possess the dispersed, localized knowledge that market prices aggregate and transmit in real time. This principle, what economists call the knowledge problem, applies with unusual clarity to urban land use.
When a city council sets a floor-area-ratio limit of 1.5 for a residential district, or designates 40 square miles of urban land as single-family-only, it substitutes a bureaucratic judgment for the aggregated preferences of millions of buyers, renters, developers, and workers. The planners may have traffic studies and community surveys. What they do not have is the information embedded in prices — the signal that a neighborhood has more demand than available housing, that households would accept denser development in exchange for lower rents, that land near transit is more valuable for apartments than for surface parking. The price mechanism conveys all of this simultaneously and adjusts continuously. A zoning ordinance, revised through contentious political processes once a decade, cannot.
Houston's relative lack of use-based zoning does not eliminate all coordination problems in its housing market. But it allows the price system to perform the job that planners have consistently proven incapable of performing: matching supply to demand at a pace and scale sufficient to keep housing within reach of ordinary households.
The Zoning Tax: Quantifying the Cost of Restriction
The academic literature has moved from qualitative to quantitative on this question. Harvard economist Edward Glaeser and Wharton's Joseph Gyourko developed the concept of the "zoning tax" — the premium embedded in home prices by land-use restrictions above and beyond what construction costs would justify. Their research, documented across multiple papers including NBER Working Paper 10124, found that government land-use restrictions embed substantial costs in constrained markets. In San Francisco, the zoning tax accounted for more than 50 percent of total housing costs per Mercatus Center analysis of the Glaeser-Gyourko methodology — meaning roughly half the price of a San Francisco home reflected government-imposed scarcity rather than materials, labor, or underlying land value. In Boston, Los Angeles, and Washington, D.C., the figure exceeded 10 percent.
A parallel analysis from the National Association of Home Builders found that government regulations at all levels embed $93,870 into the average new single-family home, representing nearly 24 percent of its final price. These are not minor compliance fees. They are the cumulative cost of rules that determine what can be built, where, at what density, with what setbacks, and with how many parking spaces — each individually defensible in the abstract, collectively functioning as a tax on the act of producing housing.
Sowell's Verdict
Thomas Sowell, whose analysis of housing markets traces the geography of affordability to its regulatory roots, offered a conclusion that the Houston data bears out. In The Housing Boom and Bust (Basic Books, 2009), he argued that "it was the free market which produced affordable housing — before government intervention made housing unaffordable." The American housing stock built before the widespread adoption of postwar zoning — the duplexes, corner apartment buildings, and mixed-use blocks that now command premium prices as "historic architecture" — was produced by markets operating with relatively few restrictions. That such housing is now expensive is not the market's verdict on what it should cost. It is the consequence of banning its replacement.
Houston didn't preserve affordability by accident or by luck. It preserved affordability by allowing the market to respond to demand with supply. The cities that top every unaffordability index — San Francisco, New York, Los Angeles, Boston — are not the nation's freest housing markets. They are among its most tightly regulated. The correlation between zoning stringency and housing cost is not coincidental. It is causal, and it is now thoroughly documented.
What the Evidence Requires
The housing affordability crisis is not a market failure. It is a government-created supply failure. The evidence from Houston — the nation's largest city without traditional zoning — is not ambiguous: when supply can respond to demand, prices reflect costs rather than scarcity rents. When supply cannot respond, every additional household seeking to live in a constrained city bids against every other household for an artificially fixed stock of homes.
Hayek understood that the knowledge embedded in prices is irreplaceable. Sowell understood that government intervention in housing markets reliably produces the opposite of its stated goals. Houston's permit numbers and price indices show what those theoretical insights look like when applied at metropolitan scale. The question is no longer whether land-use restrictions drive prices. The question is whether American cities are willing to follow the data.
