East Hampton Estate Hits Market for $42M

The Hamptons selling season is rapidly ramping up.

The children of late McKinsey executive Robert O’Block are listing his former East Hampton estate for $41.9 million, the Wall Street Journal reported. O’Block died last month at 82 years old.

The compound at 24 and 36 Jeffreys Lane spans more than four acres. The 5,900-square-foot main home has six bedrooms and is sited on a two-and-a-half-acre waterfront parcel. The lot can include up to 12,000 square feet above ground and is big enough for the addition of a tennis court.

On the lot behind the main home is a cozy two-bedroom guest cottage. The lot can have up to 7,600 square feet above ground and is permitted for the addition of an accessory dwelling unit, as is the larger lot.

The home also has a pool, 260 feet of frontage on Hook Pond and overlooks the Maidstone Club.

O’Block paid $170,000 for the larger property in the 1970s. He tacked on the second parcel in 2001 for $4.8 million, relocating a historic 1800s East Hampton village home in the process. Both properties have been renovated.

O’Block’s three sons are choosing to sell the compound because they don’t live close enough to enjoy it. All three brothers were married on the property and one wrote a book that featured the home.

The family is looking to sell both parcels to a single buyer. Hedgerow Exclusive Properties’ Terry Cohen has the listing. She told the Journal that the market has held up so far in the wake of the stock market turbulence.

The Hamptons has already seen a sale for a peak price in 2025. In February, a limited liability company acquired 370 and 372 Further Lane for $70 million; the seven-acre property hit the market last summer with an asking price of $89 million.

The activity is already an improvement from 2024, when there were no nine-figure sales and just one deal above $50 million, according to analysis by The Real Deal.

— Holden Walter-Warner