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Developers of The St. Regis Residences, Sunny Isles Beach, Miami, Complete Landmark Foundation Pour As South Tower Prepares To Go Vertical

August 4, 2026

Fortune International Group and Château Group, developers of The St. Regis Residences, Sunny Isles Beach, Miami, have reached a significant construction milestone with the South Tower’s mat foundation pour, advancing the ultra-luxury oceanfront development at 18801 Collins Avenue into its next phase. The positive collaboration with Coastal Construction is one of several over the years between the development team and the acclaimed General Contractor.

Over a continuous three-day operation, the pour involved approximately 10,000 cubic yards of concrete, creating the structural foundation for the 170-residence South Tower – one of two 62-story towers that will each rise 750 feet above the Atlantic Ocean. With the foundation now in place, the South Tower will transition to vertical construction this year, while preparations continue for the project’s second and final phase: the 150-residence North Tower, which is scheduled to break ground in early Q4.

By the Numbers:

  • 10,000 cubic yards of concrete for the South Tower mat foundation, poured continuously over three days (July 24 - 26)

  • Approximately 4 million pounds of reinforcing steel (rebar)

  • 1,100 concrete truck deliveries

  • 500 construction workers involved in the three-day operation

  • 6 boom pumps working simultaneously for more than 30 hours

  • 150-foot by 135-foot mat foundation footprint

  • 13-foot-thick reinforced concrete mat foundation

  • 435 linear feet of direct Atlantic Ocean frontage – the longest stretch of ocean frontage of any luxury residential development currently under construction in South Florida

“Every major project reaches a point where years of planning, engineering and construction begin to take visible shape,” said Edgardo Defortuna, CEO of Fortune International Group. “Completing the foundation is one of those moments. It represents an extraordinary amount of work below the surface and marks the beginning of the next chapter as the South Tower starts to rise."

“For our residents, this milestone is especially meaningful because they will now begin to see the building emerge,” said Manuel Grosskopf, CEO of Château Group. “Construction is entering a highly visible phase, and we’re excited to see the vision continue taking shape as we move toward delivery. Each step brings us closer to delivering not just a building, but a home our residents will be proud of for generations.”

“South Florida continues to see tremendous demand for luxury waterfront residences, and we’re honored that developers continue to trust Coastal Construction with some of the region’s most complex projects,” said Tom Murphy, Coastal Construction Co-CEO.

Designed by Arquitectonica, The St. Regis Residences, Sunny Isles Beach, Miami will feature 435 linear feet of Atlantic Ocean frontage. Residents will enjoy more than 70,000 square feet of indoor and outdoor amenities, including two public-facing restaurants, a full-floor private spa, indoor and outdoor pools, a fitness and wellness center, a private residents’ club, children’s programming, and the signature St. Regis Butler Service.

Conceived as a private oceanfront residential resort, the development combines the hallmark hospitality of the St. Regis brand with an expansive amenity program designed for everyday living. The South Tower remains on track and on pace, hitting every major construction benchmark as the project moves steadily toward vertical construction and, ultimately, delivery.

Remaining residences start at approximately $5 million.

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The St. Regis Residences, Sunny Isles Beach, Miami are not owned, developed or sold by Marriott International, Inc. or its affiliates (“Marriott”). La Playa Beach Associates, LLC uses the St. Regis marks under a license from Marriott, which has not confirmed the accuracy of any of the statements or representations made about the project.

Renderings via Binyan Studios, DBOX and ARQ

Past PROFILEmiami articles about The St. Regis Residences, Sunny Isles Beach, Miami:

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Developers of The St. Regis Residences, Sunny Isles Beach, Miami, Complete Landmark Foundation Pour As South Tower Prepares To Go Vertical 6.JPG
August 4, 2026
Developers of The St. Regis Residences, Sunny Isles Beach, Miami, Complete Landmark Foundation Pour As South Tower Prepares To Go Vertical
August 4, 2026

Fortune International Group and Château Group, developers of The St. Regis Residences, Sunny Isles Beach, Miami, have reached a significant construction milestone with the South Tower’s mat foundation pour, advancing the ultra-luxury oceanfront development at 18801 Collins Avenue into its next phase.

Read more →
August 4, 2026
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April 29, 2026
Developers of The St Regis Residences, Sunny Isles Beach, Miami, Secure $113.75 Million Development Loan With City National Bank For North Tower
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Fortune International Group and Château Group, developers of The St. Regis Residences, Sunny Isles Beach, Miami, have announced the closing of a $113.75 million land loan for the North Tower with City National Bank of Florida.

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Fortune International Group and Château Group, the award-winning joint developers of The St. Regis Residences, Sunny Isles Beach, Miami - have revealed a first look at the full-floor spa; a signature wellness space, designed solely for residents and crafted to cater to the exacting standards of the global ultra-high-end buyer.

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April 20, 2026
Developers of The St. Regis Residences, Sunny Isles Beach, Miami Secure $418.3 Million Construction Loan Package 2.jpg
December 3, 2025
Developers of The St. Regis Residences, Sunny Isles Beach, Miami Secure $418.3 Million Construction Loan Package
December 3, 2025

Fortune International Group and Château Group, developers of The St. Regis Residences, Sunny Isles Beach, Miami, announced today that they have secured a $418.3 million construction loan package. Bank OZK was the lender. The total package ranks among the largest ever for Sunny Isles Beach real estate.

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February 19, 2024
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The St. Regis Residences, Sunny Isles Beach, Miami, has launched sales of the much-anticipated North Tower, marking another milestone following the success at 80% sold South Tower, which started converting reservations to contracts in May of 2023.

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September 1, 2023
Fortune International Group and Château Group Break Ground on The St. Regis Residences, Sunny Isles Beach
September 1, 2023

Fortune International Group and Château Group have officially broken ground on The St. Regis Residences, Sunny Isles Beach, Miami, which will be the tallest residential towers on the ocean in Sunny Isles Beach, positioned along 435 linear feet of pristine beach. Masterfully crafted by the visionary architecture firm Arquitectonica, the residences boast interiors envisioned by acclaimed São Paulo-based designer Patricia Anastassiadis and captivating landscape design by EDS.

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December 12, 2022
PROFILE Exclusive First Look Into The Newly Revealed St. Regis Residences, Sunny Isles Beach Lavish Sales Gallery
December 12, 2022

The St. Regis Residences, Sunny Isles Beach, Miami, a duo of standalone towers situated along 435 linear feet of pristine beach, has revealed an exclusive first look into an oceanfront sales gallery amid immense sales success. Also unveiled at an exclusive invite-only event for industry insiders was the sculpture “Our Nucleus” by internationally acclaimed artist Lorenzo Quinn, exclusively commissioned for the future residences.

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Fortune International Group And Château Group Reveal The St. Regis Residences, Sunny Isles Beach
March 14, 2022
Fortune International Group And Château Group Reveal The St. Regis Residences, Sunny Isles Beach
March 14, 2022

Fortune International Group and Château Group have officially announced the much-anticipated oceanfront St. Regis Residences in Sunny Isles Beach. With development sales that have consistently outpaced the rest of the area’s ultra-luxury condominium market, the project is yet another success story from the renowned development partnership.

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For more information about The St. Regis Residences, Sunny Isles Beach, Miami, private showings or purchasing/ leasing information please fill out the form below:

In Construction, Branded Residences, Construction News, Construction Update, Development, Development News, Luxury Real Estate, News, News & Features, Residential, Sunny Isles Tags News & Features, News, Development News, Development, Sunny Isles, Sunny Isles Beach, Fortune International Group, Chateau Group, St. Regis, The St. Regis Residences Sunny Isles Beach, The St. Regis Residences, Residential, Luxury Real Estate, Featured, Arquitectonica, Patricia Anastassiadis, Anastassiadis, Ana Cristina Defortuna, Manuel Grosskopf, Construction News, Construction Update, Construction, Branded Residences, Coastal Construction, 18801 Collins Avenue
← Prosper Group and Versluys Group Close On Brickell Waterfront Land Assemblage For $50 Million, Set To Move Forward With $650 Million Luxury DevelopmentThe St. Regis Residences, Miami Passes 80% Sold As Penthouse Goes Under Contract For $47 Million →

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Prosper Group and Versluys Group Close On Brickell Waterfront Land Assemblage For $50 Million, Set To Move Forward With $650 Million Luxury Development 2.png
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Developers of The St. Regis Residences, Sunny Isles Beach, Miami, Complete Landmark Foundation Pour As South Tower Prepares To Go Vertical
August 4, 2026

Fortune International Group and Château Group, developers of The St. Regis Residences, Sunny Isles Beach, Miami, have reached a significant construction milestone with the South Tower’s mat foundation pour, advancing the ultra-luxury oceanfront development at 18801 Collins Avenue into its next phase.

Read more →
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