Kayak Co-Founder Lists Fisher Island Penthouse for $85M, More Than 2x His Purchase Price

Key Points:

• Price Surge: Steve Hafner, co-founder of Kayak, has listed his Fisher Island penthouse for $85 million, more than double the $40 million he paid in 2021. ​

• Expansive Space: The 10,200-square-foot residence features five bedrooms, eight bathrooms, and a 7,300-square-foot private rooftop with luxury amenities. ​

• Market Growth: Fisher Island's median sale price increased by 64.7% year-over-year in the fourth quarter, reflecting a booming luxury real estate market. ​

Steve Hafner, the co-founder and CEO of Kayak, has put his lavish Fisher Island penthouse on the market for $85 million. This is a significant increase from the $40 million purchase price in 2021. This move underscores the dynamic growth of Miami's luxury real estate sector.

Penthouse Highlights

• Personalized Design: Purchased as an unfinished shell, the Hafners customized the space to their preferences. ​

• Outdoor Oasis: The 7,300-square-foot rooftop includes a heated infinity pool, spa, summer kitchen, and dual wet bars, ideal for entertaining. ​

• Additional Amenities: The property offers 2,000 square feet of terrace space, a private cabana, deeded beach access, and membership in the exclusive Fisher Island Club. ​

Fisher Island Real Estate Trends

• Rising Prices: The median listing home price in Fisher Island was $7.5 million in February 2025, a 30.4% increase from the previous year. ​

• High-End Sales: Recent transactions include a $60 million double-penthouse sale at Faena House in 2015 and a $120 million-plus deal for an oceanfront unit at the Shore Club Private Collection last year. ​

• Market Dynamics: Despite high prices, Fisher Island is considered a buyer's market, with homes selling after an average of 166 days, compared to 112 days last year. ​

Fisher Island Demand Remains Strong:

Steve Hafner’s bold move to list his Fisher Island penthouse for a staggering $85 million underscores the explosive momentum and shifting dynamics of Miami’s luxury real estate scene. As this ultra-exclusive enclave continues to magnetize elite buyers, Fisher Island is cementing its status as a bellwether for soaring property values—and a hotspot for investors keeping a close eye on the city’s high-end market evolution.