The Real Price of a Brentwood Park Mansion Isn't Its First Asking Price

A five-bedroom spec home at 12846 Highwood Street went up for sale in Brentwood Park in 2023 asking $39.9 million. It closed this month for $26 million. That's not a typo and it's not a distressed sale. It's Kurt Rappaport, the co-founder of Westside Estate Agency, selling his own development to a local business executive brought in by Compass agent Josh Flagg, who happens to also star in Million Dollar Listing Los Angeles. Nearly three years, two price cuts, and a final number that landed 35 percent below where the home first hit the market.

For anyone watching Brentwood from the outside, the headline is the sale price. For anyone actually pricing a home here, the headline is the gap. That gap, not the median you'll find on a portal search, is what tells you where this market actually sits in September 2026.

What the Three Numbers Actually Show

The Highwood Street home is 13,077 square feet, built in 2023 in a warm-contemporary style, with a Dolby Atmos theater, a wine tasting cellar, and a wellness wing with a gym, sauna, and massage room. It sits on half an acre behind gates, the kind of spec build meant to set a new ceiling for the neighborhood. Here's what that ceiling looked like at each stage:

That's not a slow bleed from a single miscalculation. It's three distinct rounds of the market telling the seller his own number, and the number settling nearly $1,100 per square foot lower than where it started.

Rappaport isn't a first-time builder guessing at the top of the market. He's one of the most active dealmakers on the Westside this year, and his other 2026 trades show the same pattern from both sides of the table. In March 2026, he sold another Brentwood property at 12928 Evanston Street off-market for $29 million, working out to $2,560 a square foot on a half-acre-plus lot. In April 2026, he acquired 642 Siena Way in Bel Air for $22.5 million, or $2,045 a square foot, on a property that had originally sought $45 million back in 2024. Buying and selling, the same discount logic shows up: the ask is the opening bid, not the price.

The Tax That Applies on One Side of a Line You Can't See From the Street

Because the Highwood Street sale closed inside Los Angeles city limits, it triggered Measure ULA's 5.5 percent transfer surcharge on the full $26 million price, a bill of roughly $1.43 million owed by the seller, according to the Los Angeles Office of Finance. That's on top of the standard 0.56 percent combined city and county documentary transfer tax that applies to every sale regardless of price.

The tax has been in effect since April 2023 and applies to any sale in the City of Los Angeles at $5.4 million or more, rising to 5.5 percent above roughly $10.9 million as of the July 2026 inflation adjustment. Brentwood, Bel Air, Holmby Hills, and Pacific Palisades all sit inside those city limits. Beverly Hills, Santa Monica, Culver City, and Malibu do not. They're independently incorporated cities, and a sale in the Beverly Hills Flats carries none of this surcharge no matter the price. Drive two miles from Highwood Street toward Sunset and Rodeo and the exact same transaction owes the city nothing extra.

Research from UCLA and the Cato Institute has found the tax cut eligible high-value transactions across Los Angeles by 38 to 50 percent, generating around $290 million a year, well short of the city's original $600 million to $1.1 billion projections. What that means for a seller in Brentwood specifically isn't just a bigger closing cost. It's an incentive to hold, to test off-market channels first, or to sit on a listing for nearly three years rather than adjust into a price that clears the tax threshold cleanly. The Highwood Street timeline fits that pattern. So does the fact that Rappaport's Evanston Street sale moved off-market rather than through open listing.

Why the Address Still Commands a Premium Even at a Discount

None of this makes Brentwood Park a soft market. It makes it a market where the discount is real but the floor underneath it is not moving. The neighborhood was subdivided in 1906 by the Western Pacific Development Company on former Mexican land grant acreage, laid out with curved streets, deep setbacks, and mature canopy trees that don't exist anywhere else on this scale in the city. The Brentwood Park Property Owners Association, which has represented the community for more than 60 years, still contracts a private security service that patrols the park around the clock and has successfully resisted lot division and commercialization since it was founded. That governance layer, not sentiment, is why $2,000 a square foot for prime Brentwood Park dirt in 2026 is still a premium over the broader Brentwood single-family market, where the median sold price sits around $4 million with homes averaging 40 to 51 days on market and roughly six months of supply.

Rappaport himself isn't finished shopping. Beyond the Bel Air acquisition, he joined Jack Harris and Michael Fahimian of Beverly Hills Estates and architect Scott Mitchell in a July 2026 purchase of a 2.3-acre Malibu lot at $55 million, a parcel once owned by former Los Angeles Dodgers owner Peter O'Malley, with plans to redevelop. Asked by The Real Deal about what's next, he kept it simple: "there's a couple [properties he's] watching." For a buyer who just picked up a discounted Bel Air estate and sold his own Brentwood spec home 35 percent under ask, that's not idle browsing. It's someone who reads the gap between list price and close price as the actual market signal, and keeps trading on it.

What This Means If You're Listing in Brentwood Park

If you're sitting on a home anywhere near the ULA threshold, the sale price you settle on and the price you first announce can be two very different strategic decisions. A number placed too far above what buyers will actually pay doesn't just risk time on market. It risks the kind of multi-year erosion that turned a $39.9 million ask into a $26 million close. Getting the opening number right, backed by a presentation that earns it, matters more here than in almost any other segment of the Westside.

FAQ

Does Measure ULA apply to every Brentwood sale? No. The tax only applies once a sale price crosses roughly $5.4 million, with the higher 5.5 percent rate starting around $10.9 million as of the July 2026 threshold adjustment. Most Brentwood transactions, including the neighborhood's roughly $4 million median, fall well below that line.

Is the discount pattern seen at Highwood Street typical of every Brentwood listing? It's most visible in ultra-prime spec construction, where builders set an aspirational number to establish a new benchmark and then adjust as the buyer pool reveals itself. Homes priced closer to the neighborhood's actual comparables tend to see far less drift between list and close.

Does the ULA tax change who should list on versus off market? It's one factor among several. Off-market sales can reduce exposure during price discovery, but they also narrow the buyer pool. The right approach depends on the specific property, price point, and how close it sits to the tax threshold.

Pricing a Brentwood Park estate correctly from the first day it hits the market takes more than a comparable sales sheet. It takes a read on where the real ceiling sits this month, not where it sat three years ago. If you're weighing a sale or an acquisition in Brentwood, Beverly Luxury Estates can walk through what your specific property is actually worth in today's market and how to position it from day one. Request an instant home valuation or schedule a private consultation to start that conversation.