Overview of the Miami Mansion
Jacob Helberg, President Trump’s pick for undersecretary of state for economic growth, energy, and the environment, is placing his Venetian Islands Miami mansion on the market for $65 million. Shared with his husband, venture capitalist Keith Rabois, the waterfront estate presents a rare opportunity to own a luxury Miami home with one-of-a-kind features. Acquired in 2020 for $29 million, the couple invested an additional $15 million in customizations, transforming the property into a contemporary masterpiece that balances modern elegance with personalized touches. The listing is currently off-market as Helberg prepares for his move to Washington, D.C.
Spanning approximately 15,000 square feet across six bedrooms and six bathrooms, the mansion was originally built for Andre Radandt, former president of Bolthouse Farms. The property combines high-end architecture, waterfront location, and thoughtful interior design, making it a standout example of Miami luxury real estate. Julian Johnston of the Corcoran Group told californialuxuryhouses, “Every detail of this home, from the entrance bridge to the panoramic water views, has been curated to create an unparalleled living experience in Miami.”
Unique Aquarium and Interiors
A centerpiece of the home is the 5,600-gallon aquarium imported from Japan, which cost approximately $1 million. Its scale is so grand that maintenance requires a scuba diver, who enters discreetly through a hatch inside the primary bedroom closet. Positioned between two lounge areas overlooking the pool, the aquarium becomes both a visual and experiential highlight of the property.
The interiors feature an open-plan kitchen and living area with a large island, casual dining space, and twin glass-enclosed wine cellars. Custom wood floors and calfskin wall panels add warmth and sophistication, while floor-to-ceiling windows provide unobstructed views of Biscayne Bay, seamlessly connecting indoor and outdoor spaces.
Johnston shared with californialuxuryhouses that “the aquarium, reflective pools, and panoramic windows are not mere decor—they define the character of the home, offering a living experience unlike any other in Miami.”
Architectural Highlights and Outdoor Amenities
The mansion’s design begins with an entrance bridge over a reflecting pool, leading to a two-story wall adorned with intricate cutouts by sculptor Erwin Hauer. Outdoors, the estate features an infinity-edge pool, rooftop deck with hot tub, outdoor kitchen, private dock with a 55,000-pound boat lift, and meticulously landscaped grounds that offer both beauty and privacy. Additional features include a full-size tennis court, porte-cochère, and detached two-car garage.
Helberg and Rabois designed the home for both grand entertaining and comfortable daily living. Every space, from open terraces to intimate indoor lounges, has been thoughtfully customized to merge style and practicality, creating a truly exceptional waterfront lifestyle.
Neighborhood and Lifestyle
Situated in Miami’s prestigious Venetian Islands, the mansion provides residents with privacy while remaining close to Miami Beach, Downtown Miami, and cultural destinations. Waterfront access allows for easy boating and yachting, while nearby restaurants, cafes, and shopping venues offer world-class dining and retail experiences.
According to californialuxuryhouses, the neighborhood “balances exclusivity with connectivity to Miami’s vibrant cultural scene, making it an ideal location for high-profile residents who value both privacy and convenience.”
Personal Background and Real Estate Context
Helberg, a senior adviser to Palantir Technologies CEO Alex Karp, awaits confirmation in his government role, while Rabois continues his work as a venture capitalist with investments in major companies like Stripe and DoorDash. The couple married in 2018 in St. Barthélemy in a ceremony officiated by OpenAI’s Sam Altman, reflecting their prominence in both business and social circles.
Recently, they acquired a seven-bedroom, circa-1912 residence in Washington, D.C.’s Kalorama neighborhood for about $7 million. Kalorama is home to numerous high-profile individuals, including Ivanka Trump and Jared Kushner, Barack and Michelle Obama, and billionaires such as Jeff Bezos. The move to D.C. complements Helberg’s upcoming role and underscores the couple’s high-profile lifestyle.
Why This Mansion Stands Out
The Helberg-Rabois Miami mansion exemplifies modern luxury real estate, combining architectural innovation, waterfront living, and extraordinary amenities such as the 5,600-gallon aquarium. The residence’s thoughtful design and custom features make it a unique offering in Miami’s competitive luxury market.
Johnston told californialuxuryhouses, “This property is rare in every sense. Its combination of size, location, and bespoke amenities ensures it will appeal to discerning buyers seeking something truly exceptional.” From indoor entertaining spaces to expansive outdoor terraces, the mansion caters to both social events and private enjoyment.
Conclusion
Listed at $65 million, Jacob Helberg’s Venetian Islands Miami mansion offers more than a home—it is a statement of luxury, design, and lifestyle. With six bedrooms, 15,000 square feet, a massive aquarium, and waterfront access, it is among the most remarkable residences in Miami. Johnston concluded in conversation with californialuxuryhouses: “Properties of this caliber, with extraordinary design, location, and amenities, are exceedingly rare and represent the pinnacle of modern waterfront living.”
For buyers seeking a luxury Miami home, this estate combines sophisticated architecture, exclusive location, and personalized amenities, presenting a unique opportunity in the high-end real estate market.