California Mansion Tax Explained: What It Is, Who Pays It, and How Much It Costs

Quick answer: California has no statewide mansion tax. The "mansion tax" is Measure ULA, a City of Los Angeles transfer tax of 4% on sales over $5.4 million and 5.5% on sales of $10.9 million or more, the thresholds in effect since July 1, 2026. The thresholds rise with inflation every July 1, and the seller normally pays the tax at closing.

The "mansion tax" in California is a City of Los Angeles real estate transfer tax — 4% on sales over $5.4 million and 5.5% on sales of $10.9 million or more (the thresholds since July 1, 2026; they rise with inflation every July 1) — paid by the seller at closing. It is not a statewide rule and it is not an annual property tax. Here's what property owners and investors need to understand before a transaction closes.

What Is the California Mansion Tax?

The mansion tax isn't a California state law. It's a local measure specific to the City of Los Angeles, formally known as Measure ULA (United to House LA). Voters approved it in November 2022 and it took effect April 1, 2023.

Revenue from the tax funds affordable housing construction and tenant assistance programs in Los Angeles. The tax is imposed on the seller at the time of sale or transfer — not on the buyer, and not on an ongoing annual basis the way a property tax works.

It applies to all property types: residential homes, commercial buildings, apartment complexes, and vacant land located within City of Los Angeles boundaries.

How Much Is the Mansion Tax?

The tax is calculated on the full transfer price — not your equity or profit — in two tiers:

• Over $5,400,000 and under $10,900,000: 4%, about $218,000 on a $5.45M sale
• $10,900,000 or more: 5.5%, about $605,000 on an $11M sale

The rate applies to the full amount once you cross the threshold. A sale just over $5.4 million owes 4% on the entire price, roughly $216,000 or more. There is no graduated phase-in below the tier line.

This stacks on top of the existing Los Angeles city transfer tax (0.45%) and the county documentary transfer tax (0.11%). The combined tab on a $5.5M City of Los Angeles sale adds up fast.

How Do You Calculate the Mansion Tax on Your Property?

The math itself is simple: multiply the total transfer value by 0.04 (for sales over $5.4M and under $10.9M) or 0.055 (for sales of $10.9M or more), using the thresholds in effect since July 1, 2026. Then add the documentary transfer taxes on top.

What counts as "total transfer value" is broader than many sellers expect. Assumed debt is included. Sellers who have tried to structure deals to stay just under the threshold by adjusting the stated price while the buyer assumes a mortgage have generally found the City of Los Angeles looks at the full consideration, not just the cash paid.

For investment property owners, the mansion tax is one piece of a larger picture that includes depreciation recapture and capital gains. Understanding how California property taxes work is a useful baseline — but the mansion tax is a separate layer on top of all of that.

Who Pays the California Mansion Tax?

The seller is legally responsible. In practice, transfer taxes occasionally get negotiated into deal terms, but the legal obligation rests with the seller.

Many commercial and multifamily property owners were caught off guard by Measure ULA. The tax is not limited to residential luxury homes — a mid-size apartment building or a commercial property can cross $5.4 million without being in a high-end neighborhood. For landlords and investors, this changes the math on exits considerably.

For landlords in areas like Encino, Studio City, or Sherman Oaks, a sale that penciled out well before 2023 may look different under ULA. Running updated projections before listing is worth doing.

Where in California Does the Mansion Tax Apply?

Measure ULA applies within the City of Los Angeles only. That distinction matters in Southern California, where city boundaries are drawn at the parcel level and many neighborhoods that people think of as "Los Angeles" are actually separate incorporated cities.

Cities like Burbank and Glendale are not part of the City of Los Angeles. Neighborhoods like Woodland Hills, Calabasas, and Tarzana require a parcel-level check — some parcels fall within city limits, some don't. Don't assume based on a ZIP code or a general sense of the area. The county assessor's parcel data is the authoritative source.

For properties in Agoura Hills or other outer areas, the mansion tax almost certainly doesn't apply — but verify before relying on that.

Are There Any Exemptions From the Mansion Tax?

Yes, though the bar is specific. Measure ULA carves out certain transfers:

• Transfers to or from qualified affordable housing organizations meeting specific deed-restriction requirements
• Certain transfers to qualifying tax-exempt nonprofit entities
• Some involuntary transfers, including specific foreclosure-related situations

These exemptions require documentation filed at closing and have narrow eligibility criteria. If you believe an exemption may apply to your transaction, you need to sort this out well before the closing table — not the morning of. Once the deed records, the tax is generally owed.

If you're looking at a sale of investment property and want to understand the full tax impact — including how the mansion tax interacts with depreciation, capital gains, and your overall liability — tax planning services can help you model the picture before you make a decision.

When Did the Mansion Tax Start, and Is It Still in Effect?

Measure ULA passed on November 8, 2022, and took effect April 1, 2023. Sales that closed before that date were not subject to it.

The tax has faced legal challenges since its passage, primarily from real estate industry groups. As of this writing, Measure ULA remains in effect and is actively collected. If you have an active transaction, confirm current status with legal counsel — litigation outcomes can shift the landscape.

Can You Plan Around the Mansion Tax?

You can't negotiate around the threshold by adjusting the stated sale price. But you can approach a sale more strategically:

• Time the sale within your broader tax year: Capital gains timing, other income, and the mansion tax all interact. Running a full picture before listing helps — our article on strategies for lowering your property tax burden in Los Angeles County covers some related angles.
• Understand your adjusted basis: For investment properties, depreciation recapture and your cost basis affect net proceeds substantially. These don't change the mansion tax owed, but they change the real economics of selling.
• Get a full picture before you list: Many sellers learn the full tax cost after accepting an offer. At that point, options are limited.

If you're a real estate professional helping clients through sales in Los Angeles, see our related piece on tax deductions for real estate agents in California — the business-side tax picture matters too.

Book a free consultation to talk through how a property sale fits into your overall tax position.

This article is general information, not tax advice for your specific situation. Tax rules change and the application of Measure ULA to individual transactions depends on property location, deal structure, and applicable exemptions. Consult a qualified tax professional before making decisions based on this content.

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