Billionaire Ken Griffin proposes private marina at Miami Beach

Billionaire investor Ken Griffin has submitted a proposal to develop a private superyacht marina on Terminal Island in Miami Beach, expanding his portfolio of South Florida real estate holdings.

The 30,000sqft (2,787sqm) marina would include four buildings at 120 MacArthur Causeway, situated on the edge of Terminal Island near PortMiami. The 3.7-acre site is planned for Griffin’s personal use and that of his guests.

The One Island Park project, designed by BMA Architects, is set to include a gatehouse with security offices, a crew pavilion with a kitchen, laundry, a gym, a sauna and a rooftop pool, and an owner’s pavilion with a lounge, storage areas and a pool. An operations centre will also provide staff offices and a repair workshop.

The marina would feature three to six yacht slips suitable for large vessels such as Griffin’s 308-foot superyacht Viva and will operate privately. The facility may also host private events during Art Basel or the Formula One Miami Grand Prix.

A conditional use permit for the marina will be reviewed by the Miami Beach Planning Board on 4 November 2025, while the project is also being considered by Miami-Dade County’s Shoreline Review Committee.

The property includes about 1,400ft (427 metres) of shoreline and was previously owned by the Related Group, which abandoned earlier plans for an office building. In 2023, Lincoln Property Company purchased the site for $77 million USD, and ownership records were later updated to reflect entities tied to Griffin.

Griffin’s broader South Florida investments include relocating Citadel and Citadel Securities headquarters from Chicago to Brickell in 2022 and announcing a $2.5 billion bayfront office and hotel complex at 1201 Brickell Bay Drive, which will comprise office space, a hotel and dining facilities.

His South Florida holdings also include homes on Star Island on Miami Beach and a $106.9 million estate in Coconut Grove, purchased in 2022.

This article is based on reporting from The Real Deal by Lidia Dinkova and Traded Media. Images courtesy of BMA Architects.