In a move that intertwines craftsmanship with heritage, Ellemar Enterprises, the esteemed multi-generational luxury homebuilder based in South Florida, has listed a newly reimagined penthouse at Le Sanctuaire in Highland Beach for $26.9 million. This full-floor oceanfront residence—located at 3425 S Ocean Blvd, Unit PH—is more than just a high-end real estate offering; it’s a personal milestone for the Rothenberg family and their decades-spanning firm.
Built by Ellemar over 30 years ago, Le Sanctuaire is a four-residence boutique building known for its architectural discretion and direct access to the Atlantic. Today, the firm returns to one of its earliest projects with a top-to-bottom transformation that positions the penthouse as a standout within Highland Beach’s already rarefied residential market.
Spanning 6,182 square feet, the penthouse has been completely gutted and rebuilt into a four-bedroom, four-and-a-half-bathroom turnkey home. The original three-bedroom configuration has been re-envisioned to deliver an experience typically reserved for custom oceanfront estates.
180-degree ocean views framed by floor-to-ceiling glass
An expansive wraparound terrace with a built-in summer kitchen
Curated designer finishes throughout the interiors
A private elevator offering direct residence access
Seamless beachfront access, enhancing the home’s estate-like appeal
In tandem with the unit redesign, Ellemar also executed building-wide upgrades to elevate the collective experience at Le Sanctuaire—a testament to the firm’s holistic approach to luxury residential development.
The project is deeply personal for Mark Rothenberg, CEO of Ellemar Enterprises, who originally developed the property in the early stages of the firm’s evolution.
“This project represents a full-circle moment. It connects the past, present and future of our family-run firm, which has more than three decades of experience in luxury development.”Mark Rothenberg, CEO of Ellemar Enterprises
For Brandon Rothenberg, Ellemar’s Vice President of Real Estate and Development, the redesign was an opportunity to bridge legacy with fresh perspective.
“Reimagining this residence alongside my father was especially meaningful. Returning to one of our earliest projects with a fresh design lens was both nostalgic and rewarding.”Brandon Rothenberg, Ellemar’s Vice President of Real Estate and Development
The result is a home that doesn’t just reflect the evolution of a property—but of a philosophy. Ellemar remains steadfast in its focus on limiting project volume to maintain exceptional quality, working on a select number of ultra-luxury homes from Fort Lauderdale to Palm Beach.
Positioned between Boca Raton and Delray Beach, Highland Beach is one of South Florida’s most exclusive coastal enclaves. Defined by its residential character, lack of commercial overdevelopment, and pristine shoreline, the town maintains a full-time population of under 4,000. Privacy is paramount here—and with just four homes in Le Sanctuaire, discretion is built into the architecture.
Founded more than 30 years ago, Ellemar Enterprises is a premier luxury builder with expertise across custom homes, design/build projects, consulting, renovations, and residential development. The firm’s accolades include the 2022 Grand Aurora Award for Best Custom Home Over 10,000 Square Feet and the 2022 South Florida Business Journal Structures Award for Best Custom Single-Family Home.
As the Rothenbergs continue to shape South Florida’s most exclusive real estate, this Highland Beach listing serves not only as a showcase of design evolution—but as a defining chapter in a generational legacy of architectural excellence.
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