Los Angeles’s voter-approved transfer tax on high-value property sales, formally called the United to House L.A. Real Property Transfer Tax, has triggered steep declines in building permits, land transactions, and multifamily housing production across the city. A growing body of academic research from UCLA, UC Irvine, UC San Diego, and Harvard now links the levy directly to those losses, raising hard questions about whether the tax is undermining the very housing goals it was designed to serve.
How the Tax Works and What It Costs
Measure ULA became law on January 1, 2023, and the city began collecting revenue on April 1 of that year. The tax stacks on top of the existing base transfer tax that already applies to all Los Angeles property sales. As of the most recent inflation adjustment, the Office of Finance lists two tiers: a 4% surcharge on sales between $5.3 million and $10.6 million, and a 5.5% surcharge on sales above $10.6 million. On a $6 million apartment building, that means roughly $240,000 in additional costs layered onto an already expensive transaction. Seventy percent of the revenue is earmarked for affordable housing programs, according to the Housing Department, which has highlighted rental assistance, homelessness prevention, and new below-market units as key uses.
Supporters projected the tax would generate about $378 million per year and framed it as a way to tap wealth from luxury real estate to stabilize tenants at the bottom of the market. But the behavioral response from buyers, sellers, and developers has been far sharper than backers anticipated, and the revenue shortfall is only part of the problem. Because the levy applies at the moment of sale, it creates powerful incentives to delay or avoid transactions altogether, and the deeper damage shows up in what is not being built, financed, or sold as a result.
Permits and Production Fell Off a Cliff
Overall construction permits in Los Angeles fell 40% after the tax took effect, and permits for single-family homes specifically dropped 45%, according to analysis published by the UCLA Anderson Review. Those declines occurred inside city limits while surrounding suburbs saw their development pipelines expand, a divergence that points squarely at the tax rather than broader economic conditions such as interest rates or construction costs. Developers reacted by keeping new single-family projects below the $5 million and $10 million tax cutoffs, redesigning homes to reduce land and building costs, or moving them out of the city entirely to avoid the surcharge.
The multifamily sector, which accounts for the bulk of new housing supply in a dense city like Los Angeles, took an especially hard hit. Researchers at the UCLA Lewis Center estimated that Measure ULA reduced multifamily housing production by at least 1,910 units per year, an approximately 18% decline compared to the 2020 to 2022 average for projects with 20 or more units. The study used a causal design methodology tying the tax to reduced land transactions rather than relying on a simple before-and-after comparison, strengthening the case that the policy itself is driving the slowdown. In a city that already faces a severe housing shortage, losing nearly 2,000 apartments annually compounds the affordability crisis the tax was supposed to address and makes it harder for Los Angeles to meet regional housing targets.
Transaction Freeze and the Proposition 13 Trap
Sales of properties above the $5 million threshold dropped by 50%, according to reporting that cited the academic research tracking high-value transactions after April 2023. A separate analysis published as a research brief by the Cato Institute found that Measure ULA reduced transaction rates for eligible properties by 38%, even after controlling for broader market trends. That freeze does more than shrink transfer tax receipts. It also interacts with California’s Proposition 13 reassessment rules in a way that quietly erodes the broader property tax base, because fewer sales mean fewer opportunities to reset assessed values to current market prices.
A working paper by economists from UC Irvine, UC San Diego, and Harvard examined this dynamic in detail, modeling how a persistent slump in high-value sales ripples through local finances. Their finding is that the transaction slowdown caused by Measure ULA does not just reduce the city’s direct transfer tax haul; it also depresses the property tax revenue that funds schools, fire departments, and other services across California. Reduced transactions affect redevelopment pipelines as well, because properties that do not sell are less likely to be torn down and rebuilt at higher density, especially in transit-rich neighborhoods. Over time, the long-run fiscal cost to the state may exceed whatever the mansion tax brings in, undercutting the rationale that a narrow levy on luxury deals can reliably bankroll social programs.
Suburban Sprawl as an Unintended Export
The pattern of permits falling inside Los Angeles while rising in neighboring jurisdictions suggests the tax is not killing development so much as relocating it. Builders who once concentrated high-end projects in West Los Angeles, the Hollywood Hills, or downtown now have a financial reason to look at Pasadena, Burbank, or unincorporated county land where Measure ULA does not apply and where entitlement timelines can be more predictable. That geographic shift carries its own costs: longer commutes, greater car dependence, and infrastructure strain on suburban communities that may lack the transit, school capacity, and utility networks to absorb rapid growth at the pace the market demands.
The divergence between city and suburban permit trends is one of the clearest signals that the tax is reshaping regional growth patterns rather than simply extracting extra revenue from luxury buyers. When new projects leapfrog to the periphery, Los Angeles still bears many of the social costs of growth (traffic congestion, air pollution, and pressure on regional freeways) without capturing as much of the tax base or new housing supply. That outcome runs directly counter to long-standing planning goals that favor infill development near jobs and transit, and it weakens the city’s leverage to negotiate community benefits or affordability set‑asides tied to large urban projects.
Lessons for Policy and the Role of Research Institutions
The emerging evidence around Measure ULA highlights the importance of stress-testing well-intentioned housing policies against real-world behavioral responses. Institutions such as UC Irvine and its social sciences programs are playing a central role in that process by quantifying how taxes alter investment decisions, migration patterns, and local government budgets. Their work shows that the design details of a tax (thresholds, timing, and interaction with existing rules like Proposition 13) can matter as much as its headline rate, especially in complex, high-cost markets like Los Angeles.
Beyond faculty research, the broader academic ecosystem at UC Irvine helps sustain this kind of policy analysis over time. Undergraduate programs in the social sciences, described on the college website, train students in data methods that feed into housing and tax studies, while graduate offerings highlighted by the social science graduate portal support more specialized work on urban economics and public finance. Alumni networks coordinated through the social sciences alumni page connect that research to practitioners in government, real estate, and nonprofit housing, and the university’s commitment to responsible data practices, outlined in its privacy policy, underpins the trust needed to analyze sensitive property and tax records. Together, these efforts help ensure that when policies like Los Angeles’s transfer tax fall short of their goals, decision-makers have rigorous evidence to guide reform rather than relying on slogans or assumptions.
More From The Daily Overview
*This article was researched with the help of AI, with human editors creating the final content.
Elias Broderick specializes in residential and commercial real estate, with a focus on market cycles, property fundamentals, and investment strategy. His writing translates complex housing and development trends into clear insights for both new and experienced investors. At The Daily Overview, Elias explores how real estate fits into long-term wealth planning.
