On May 27, 2026, a five-bedroom Mediterranean estate at 703 North Arden Drive closed for $24 million after only a few weeks on the market. Kurt Rappoport of Westside Estate Agency represented both sides of the deal on the more than 10,000 square foot home, which traded at $2,345 per square foot. Nothing about the sale looked unusual for the Beverly Hills Flats. What made it worth a second look wasn't the price. It was the tax the sellers, Kevin Wall and Sue Smalley of PTK Global, did not pay.
The Real Deal reported that, had that same house sat a few miles east, inside the City of Los Angeles instead of the City of Beverly Hills, the sale would have triggered close to $1.2 million in Measure ULA transfer tax. Same square footage, same finishes, same buyer pool. The only variable that mattered was which government stamped the parcel map.
That's the part most comparisons between Beverly Hills and its neighboring Westside submarkets leave out. The number that actually predicts a seller's net proceeds here isn't list price or lot size. It's a boundary line most buyers never think to ask about until an agent raises it at the listing appointment.
The Zip Code Is Not the Boundary
Measure ULA, the transfer tax Los Angeles voters approved in November 2022 and that took effect April 1, 2023, funds affordable housing and tenant protection programs through a tax on high-value property sales. The Los Angeles Office of Finance is explicit that the tax applies only within the City of Los Angeles: sales that close after June 30, 2026 owe 4% once the price crosses $5.4 million and 5.5% once it crosses $10.9 million, with both thresholds resetting each year for inflation.
Beverly Hills has run its own government, with its own police and fire departments, since 1914, long before ULA was ever on a ballot. The tax was written to apply inside Los Angeles city limits, and Beverly Hills simply isn't inside them. It doesn't matter that a listing gets marketed as "Beverly Hills." What matters is whether the parcel sits inside the boundary the city drew for itself more than a century ago.
Where the Address Stops Meaning Anything
The complication is that plenty of homes carry a Beverly Hills, CA 90210 mailing address without sitting inside that boundary. The canyon corridors north of the city, along Coldwater Canyon, Franklin Canyon, Benedict Canyon, and the stretch toward Mulholland, are known in the trade as BHPO, short for Beverly Hills Post Office. They share the zip code residents associate with the Flats and Trousdale.
Agents who work both sides of that line describe BHPO sales as priced and negotiated the same way a Bel Air or Brentwood sale would be. Industry pricing guides for this market put the price-per-square-foot spread between BHPO and the city-proper Flats at more than $400, a gap that reflects lot size and privacy.
The Tax Boundary and Listing Strategy
Measure ULA can factor into listing strategy on the Los Angeles side of the market. Inside Beverly Hills proper, agents don't run it at all.
That asymmetry shows up elsewhere too. Roughly 40% to 50% of transactions above $15 million in this broader market now happen off-market, through pocket listings and private buyer networks, rather than on the open MLS. Privacy and vetting billionaire buyers quietly are part of that. So is the fact that a public asking price can reveal where a seller landed relative to a tax threshold.
| Area | Governing city | Subject to Measure ULA | Tax on a $10M sale |
|---|---|---|---|
| Beverly Hills Flats, Trousdale, Gateway | City of Beverly Hills | No | $0 |
| Bel Air, Brentwood, Pacific Palisades | City of Los Angeles | Yes | $400,000 |
What the Q1 2026 Numbers Actually Show
Beverly Hills' own closed median hit $5.43 million in Q1 2026, up 14% from $4.75 million a year earlier. Average days on market rose to 86, up from 67 in Q1 2025, a 28% jump. Read on its own, a slower market alongside a rising median looks like a contradiction. Read against the tax boundary, it looks like something else.
A seller on the Los Angeles side of the market is pricing against a threshold that resets every July 1. A seller inside Beverly Hills isn't. That difference removes a deadline from the negotiation. Sellers here can hold out for the right buyer without a closing date racing an inflation adjustment. Longer days on market in this specific pocket doesn't necessarily mean less demand. It can mean less urgency, because the clock that pressures a threshold-adjacent LA city seller into a faster decision simply doesn't run in Beverly Hills.
That patience is easier to afford here for another reason. Roughly 65% to 70% of single-family transactions in Beverly Hills close entirely in cash, and that share climbs to 85% to 90% in the $10 million-plus tier. A market this insulated from financing timelines was always going to behave differently from one where buyers are also managing rate locks and appraisal contingencies.
The Line Is Durable, Not Permanent
None of this is settled law forever. CalMatters reported that, in April 2026, a Howard Jarvis Taxpayers Association-backed ballot measure qualified for California's November 2026 ballot that would have capped municipal transfer taxes statewide, a move aimed in large part at Measure ULA itself. Separately, The Real Deal reported that, on July 6, 2026, the Los Angeles City Council voted to shelve a proposed ballot measure that would have exempted new multifamily construction from ULA, directing city staff instead to draft a pilot tax credit program that has not yet been finalized.
Neither development changes anything for a single-family sale in the Flats or Trousdale today. But the boundary sellers are pricing around wasn't handed down by geography. It was drawn by a vote in 2022, and three years later its edges are still being negotiated in Sacramento and at City Hall. A seller weighing timing against a threshold that resets every July and a seller weighing timing against a tax whose future is still being argued over are running two different calculations, one zip code apart.
A Few Questions Worth Asking Before You List or Offer
Is the $5.4 million threshold fixed going forward? No. It resets annually for inflation. The current $5.4 million and $10.9 million tiers took effect for transactions closing after June 30, 2026, and will move again next year.
Understanding which side of this line a specific address falls on, and what that means for a listing strategy or an offer, is the kind of block-by-block homework that has to happen before a price ever gets set. If you're weighing a sale or purchase in the Flats, Trousdale, or one of the canyon addresses that share the 90210 zip code, The Alligood Group can walk through what your specific address means for your bottom line. Schedule a Private Consultation to start that conversation.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
