Few housing policies in recent memory have been as misunderstood as Measure ULA. It went to LA voters in November 2022 branded as a "mansion tax" — a surcharge on the sale of trophy homes, with the proceeds aimed at affordable housing and homelessness prevention. It passed with 58% support and took effect April 1, 2023.
The branding was misleading in two ways that matter for anyone buying, selling, or building in Los Angeles. First, it is not limited to mansions, or even to homes. Second, and more consequentially, the evidence now suggests it is shrinking the city's housing supply rather than expanding it.
First, what Measure ULA actually taxes.
Measure ULA is a transfer tax — a one-time charge triggered whenever real property changes hands, calculated on the gross value of the deal. It is not an annual property tax, and it is not based on profit or equity. It sits on top of the city's existing 0.45% base transfer tax.
How Measure ULA is structured (2026)
Because the tax is charged on the entire transaction, crossing the line by a single dollar can trigger a six-figure bill — a $12M sale owes about $660,000 in ULA tax alone. The thresholds rise each year with inflation (set to reach about $5.4M and $10.9M after June 30, 2026), so always confirm the current figure with the LA Office of Finance before a transaction.
The "mansion tax" was never just about mansions.
Here is the part most voters missed: ULA applies to every category of real property above the threshold — apartment buildings, office towers, retail centers, industrial sites, and raw land, not only single-family homes. There is no commercial carve-out. Through the end of 2025, roughly 60% of taxed deals were single-family residences, about 24% were commercial, and about 13% were multifamily. That breadth is exactly why the tax has reached into the machinery of housing development itself.
The central question: more units, or fewer?
In April 2025, researchers at UCLA's Lewis Center for Regional Policy Studies and the RAND Corporation published "Taxing Tomorrow," the most rigorous study of ULA's development effects to date. Their method was clever: they compared housing production inside the LA city boundary — where ULA applies — against comparable areas just outside it that aren't subject to the tax. That natural experiment let them separate ULA's effect from broader headwinds like interest rates.
Their conclusion was direct: ULA is reducing multifamily housing production in Los Angeles by at least 1,910 units per year — an 18% decline relative to the 2020–2022 average among projects of 20 or more units. They described it as a robust causal link, not a coincidence of timing.
Why a housing tax would reduce housing.
The mechanism is where the policy design backfires. A newly built apartment building is a high-value asset; when it sells or refinances, the price routinely exceeds $5.3M. So the building gets taxed — meaning the developer's eventual exit is worth 4% to 5.5% less. Developers underwrite that hit at the very start, when they decide whether a project pencils.
New buildings cross the line
Newly built apartment buildings routinely sell for more than $5.3M — so nearly every one is taxed at exit.
The exit shrinks 4–5.5%
Developers underwrite the tax on day one. A smaller exit means fewer projects clear the bar to get financed.
Affordable units fall too
Most large LA projects bundle income-restricted units via density bonuses. Less market-rate construction = fewer affordable units.
Only about 8% of ULA revenue — some $29M a year — even comes from selling recently built apartments. The city is taxing the thing it wants more of.
The affordable-housing irony runs deep. The UCLA/RAND team estimates at least 168 affordable units a year are lost as a knock-on effect — more than the roughly 70 units a year the tax revenue from those same building sales could subsidize.
The revenue reality.
Supporters correctly point out that ULA crossed $1 billion in cumulative revenue by January 2026, across about 1,435 transactions, and the city has begun deploying it — including a roughly $360 million allocation in spring 2026 toward thousands of affordable units (most of it preserving existing units rather than building new ones). That is real money doing real work.
But annual collections have run at roughly $280–413 million — well under the $600 million to $1.1 billion the campaign projected. The reason is the same friction that's slowing construction: high-value deals are simply happening less often. UCLA research estimates the odds of a property selling above the $5M threshold fell by as much as 55% after the tax took effect.
Annual revenue — promised vs. delivered
What this means if you own or build in LA.
For owners of property in the $4.5M–$5.5M band, ULA exposure can change the math on whether and when to sell — sometimes meaningfully. For larger assets, the 4–5.5% charge is real money that doesn't show up on a typical pre-sale valuation, and it deserves a line in any net-proceeds analysis — something we model for every seller we work with. For developers weighing an LA City project against one a few blocks outside the line, the tax is now part of the feasibility conversation from day one. Run your own numbers in our investor calculator.
There's also a live political variable. On May 3, 2026, the California Secretary of State certified the Howard Jarvis Taxpayers Association's Local Taxpayer Protection Act for the November 3, 2026 statewide ballot. If it passes, it would cap municipal transfer taxes at 0.05% — effectively gutting ULA. If it fails, ULA stays exactly as it is, and a higher-threshold "ULA 2.0" has been floated. Either way, the next several months carry unusual weight for anyone timing a large LA transaction — see our read on the LA luxury market right now and whether to sell or redeploy equity.
Key takeaways
- ULA is a one-time transfer tax on the full sale price: 4% above ~$5.3M, 5.5% above ~$10.6M (2026 thresholds).
- It applies to all property types — 60% of taxed deals were homes, but apartments, offices, and land are all in.
- UCLA/RAND find a causal link to ~1,910 fewer apartments built per year, including 168+ affordable units.
- Revenue crossed $1B cumulatively, but annual collections run below even the campaign's low-end projection.
- The November 2026 ballot could cap transfer taxes at 0.05% — a live variable for anyone timing a large sale.
Frequently asked questions.
What is Measure ULA?
A one-time transfer tax on LA City property sales, effective April 1, 2023. As of 2026: 4% on sales from ~$5.3M to ~$10.6M and 5.5% above that, charged on the full price, on top of the city's 0.45% base transfer tax.
Does it apply only to mansions?
No — it applies to every property type above the threshold: apartments, offices, retail, industrial, and land. There is no commercial carve-out.
Has ULA increased or decreased housing construction?
The UCLA Lewis Center / RAND study found ULA is reducing apartment construction by roughly 1,910 units a year — an 18% decline in 20+ unit projects — including 168+ fewer affordable units annually.
Could ULA be repealed?
The Local Taxpayer Protection Act on the November 3, 2026 statewide ballot would cap municipal transfer taxes at 0.05%, effectively gutting ULA. If it fails, ULA stays — and a "ULA 2.0" has been floated.
This article is for general informational purposes only and does not constitute tax, legal, financial, or investment advice. Thresholds, rates, and laws change — including potential changes on the November 2026 ballot. Confirm current figures with the City of Los Angeles Office of Finance and consult a qualified professional before making any transaction decision. Research figures are approximate.
Know your number before the tax line moves.
Whether you're weighing a sale near the ULA threshold or evaluating a development site, we'll model the real net — transfer taxes included — so there are no surprises at closing.
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