Robert Diamond, the former Barclays CEO, has quietly put his full-floor penthouse on the 59th floor of 520 Park Avenue on the market for $40 million. The 4,322-square-foot spread, set up as a two-bedroom with oversized entertaining spaces, was bought by Diamond and his wife for about $30.1 million in late 2018. The apartment features a private key-locked elevator, a windowed eat-in kitchen and sweeping Manhattan views, with Compass agent Jim St. Andre handling the sale.
The listing copy - which calls the home “meticulously renovated and conceptualized” - lays out the unit’s floor plan, private key-locked elevator and wraparound entertaining rooms, according to Compass. The property's public-record history on Compass records a December 2018 closing for roughly $30.1 million, and the market posting also appears on StreetEasy.
Where It Fits In 520 Park's Market
520 Park has become a roll call of big-ticket buyers. Ken Moelis paid about $62 million for a 52nd-floor unit, James Dyson picked up a 60th-floor duplex for roughly $73.8 million, and the building's crown duplex went to Orlando Bravo for around $79 million. The Bravo deal later spawned litigation over alleged view-related nondisclosures, as reported by The Real Deal, and that dispute has coincided with only a handful of resales on the tower's top floors.
Resales Have Been Mixed
Public records from the New York City Department of Finance show that one original-owner penthouse, PH48, traded for roughly $32.4 million in January 2019 and later resold for about $28.25 million in April 2022. Those movements are visible in the city's sales rollups for 2019 and 2022 - 2019 filings with the New York City Department of Finance and 2022 filings with the New York City Department of Finance - underscoring how some trophy-unit resales have softened relative to sponsor-era pricing.
What The Listing Could Signal
Diamond's $40 million ask will test just how much appetite remains for full-floor inventory at one of the Upper East Side's most rarefied addresses and may serve as a canary for pricing at the very top of the market. Jim St. Andre, the Compass agent on the listing, declined to comment when contacted, according to The Real Deal. Whether the unit trades near ask or at a visible discount will be watched closely by sellers and brokers in trophy towers across Manhattan.
If the home finds a buyer near the $40 million mark, it could help underpin comps for the building's remaining top-floor inventory. If it does not, the listing may simply reinforce the discounts already seen in recent resales, making this one of the spring's more closely watched high-end offerings.
