In March 2026, two duplex penthouses on a small island in the middle of the Miami River and Biscayne Bay sold for $49.9 million each — $99.8 million combined, at a benchmark of approximately $6,300 per square foot. Swire Properties confirmed the deals mark the highest-priced condominium sales recorded on mainland Miami. That figure alone would justify a guide to this building. The fact that the residences in question don’t exist yet — and won’t until 2030 — is what makes the story genuinely remarkable.
The Residences at Mandarin Oriental, Miami is the redevelopment of Brickell Key’s namesake hotel into a two-tower branded residential project that has, in under two years of sales, surpassed $1.3 billion in total volume and produced the single most expensive penthouse listing in the city’s history. As a luxury real estate specialist with One Sotheby’s International Realty, I track every significant pre-construction project in the Brickell corridor. This is the complete guide to what is, by transaction value, the most consequential new address in Miami right now.
What Is The Residences at Mandarin Oriental, Miami?
The Residences at Mandarin Oriental, Miami is a two-tower ultra-luxury residential and hospitality development at 1 Island Drive on Brickell Key, replacing the existing Mandarin Oriental hotel that closed in 2025 to make way for the project. The development is led by Swire Properties — the Hong Kong-based developer responsible for Brickell Key’s original 1970s and 1980s master-planned development — in partnership with the Mandarin Oriental Hotel Group, with architecture by Kohn Pedersen Fox and interior design by French designer Tristan Auer.
The project consists of a 66-story South Tower containing 228 private residences, and a 33-story North Tower containing 70 additional private residences alongside 28 Hotel Collection residences and 121 hotel guest rooms. The two towers are connected by a shared 100,000-square-foot amenity podium, operated to Mandarin Oriental’s hospitality standards. At 800 feet, the South Tower will be among the tallest residential structures on Brickell Key.
Residences range from two to five bedrooms, with standard floor plans spanning approximately 2,333 to 5,840 interior square feet, and two exclusive duplex penthouses each offering more than 7,800 to 8,500 square feet of interior living space — figures that have varied slightly across developer materials as the project’s specifications have been finalized.
Groundbreaking is targeted for late 2026, with the South Tower’s delivery anticipated around 2029 to 2030.
The Record: Two Penthouses, $99.8 Million, and What It Actually Means
Understanding why the March 2026 penthouse sales matter requires separating the headline number from the underlying signal — because both are genuinely significant, for different reasons.
According to Swire Properties, the two uppermost penthouses in the South Tower each sold for $49.9 million, totaling $99.8 million across the two transactions. The deals establish a benchmark of approximately $6,300 per square foot — and Swire confirms they represent the highest-priced condominium sales recorded on mainland Miami, a record previously associated with Fisher Island and other island-only addresses rather than a mainland-connected Brickell location. The buyers were not publicly identified, which is standard practice for transactions at this stage of a pre-construction sales cycle.
The important caveat, reported alongside the record itself: purchases at the pre-construction stage typically do not appear in public deed records until they close, which for this project will be years away given the 2029-to-2030 delivery target. The $49.9 million figure represents signed contracts, not yet a closed, recorded sale. If and when these specific contracts convert to closings at that price, they will set the recorded public benchmark. Until then, the number is real in the sense that two buyers committed serious capital to it — but it is a sales-cycle data point, not yet a courthouse record.
What is unambiguous is the pace surrounding it. The transactions brought the project’s total sales volume to more than $1.3 billion across both towers, with more than $90 million in additional sales reported during February 2026 alone — momentum that, according to Swire, has pre-development activity running ahead of schedule.
A separate penthouse — distinct from the two record-setting units, with a planned 7,942 interior square feet and 3,872 square feet of exterior space for 11,814 square feet combined, five bedrooms plus a library — has also been reported with a final asking price of $49 million before its own sale, illustrating that this $49-to-$50-million tier is not a single outlier transaction but a recurring price point the building’s top floors are consistently commanding.
The Residences: Two Towers, Two Different Products
The South and North Towers at The Residences at Mandarin Oriental are not interchangeable, and understanding the distinction matters for buyers evaluating which one fits their intent.
South Tower — 66 stories, 228 private residences. This is the pure residential tower, positioned at the southernmost tip of Brickell Key with the most direct bay and ocean exposure. It is the tower where the record-setting penthouses were sold, and it is the tower that Swire’s marketing and press materials center on. Floor plans run from approximately 2,333 to 5,840 square feet across two-to-five-bedroom configurations, with the South Tower’s Collection IV penthouse-tier residences positioned near the building’s top, offering corner exposures over Biscayne Bay, Brickell Key, and Miami Beach simultaneously.
North Tower — 33 stories, a mixed program. The North Tower is structured differently: 70 private residences, plus 28 separate “Hotel Collection” residences, plus 121 traditional hotel guest rooms. This is the tower that retains and operates the functioning Mandarin Oriental hotel component, meaning North Tower buyers — particularly in the Hotel Collection — are purchasing into a building with active transient hotel guests as neighbors, a meaningfully different daily experience than the South Tower’s residences-only environment. Brokerage materials note that with 60% of the first tower already sold, hotel tower residences were being offered from approximately $3.9 million.
For buyers prioritizing maximum privacy and a residences-only environment, the South Tower is the clear choice. For buyers who want a lower entry price point and don’t mind the active hospitality component, the North Tower’s Hotel Collection offers a meaningfully different value proposition within the same overall development.
Standard Specifications and Finishes
Across both towers, residences are positioned with a consistent finish specification reflecting the Mandarin Oriental brand standard and Tristan Auer’s interior design direction:
- Private elevator access direct to each residence
- 11-foot ceilings throughout
- Floor-to-ceiling windows and generous balconies — 10-foot-deep terraces on standard configurations
- Molteni kitchen cabinetry with Gaggenau appliances throughout
- Lighting design by Speirs Major
- European cabinetry, stainless steel appliances, and walk-in closets as standard
- Washer and dryer in every residence
- 24-hour attended guard gate and concierge
- Valet parking with assigned and covered parking
The Tristan Auer interior direction is worth noting specifically — Auer, described in his own materials as an “interior and emotion architect,” has built a body of work across European luxury hospitality and residential projects that emphasizes warmth and material authenticity over the more minimalist glass-and-steel language that defines several other Brickell towers in this guide series. The duplex penthouse design language, as described by the development team, draws inspiration from the ocean — “soft undulating forms and organic textures” — a deliberate departure from the harder architectural geometry of buildings like One Thousand Museum or Baccarat Residences.
Amenities: 100,000 Square Feet and Mandarin Oriental Service
The shared amenity podium connecting both towers spans 100,000 square feet and is operated by the Mandarin Oriental Hotel Group — meaning the same global hospitality brand managing the hotel guest experience also oversees the residential owner experience throughout the building.
The full amenity program includes:
Pools and outdoor:
- 11 total pools across the property, including multi-tiered landscaped infinity pools and a distinct ocean and lagoon pool configuration
- Private cabanas
- Plunge pools
- Sports court
- Indoor golf simulator
Dining:
- A collection of dining experiences spanning morning to evening, including intimate garden dining
- Signature waterfront restaurants overlooking Biscayne Bay
- Tea and dining pavilions
- Private dining rooms
- Wine cellar
Wellness:
- Access to Mandarin Oriental’s signature spa
- Multiple fitness and wellness spaces
- Forest yoga programming
- Wellness suites
Social and business:
- Business lounges and meeting rooms
- Screening lounge
- Children’s club
- Work lounges
Landscape design for the amenity podium is led by SHMA, a Bangkok-based landscape architecture firm whose work spans luxury hospitality projects across Asia — a design pedigree that reinforces the Mandarin Oriental brand’s Asian hospitality heritage throughout the project’s outdoor spaces, not just its service standards.
For buyers who have evaluated Baccarat Residences Brickell or St. Regis Residences Brickell elsewhere in this guide series, the Mandarin Oriental amenity program is broadly comparable in scale and ambition, distinguished primarily by its island setting and the specific Asian-hospitality character of the Mandarin Oriental brand versus the French crystal heritage at Baccarat or the American hotel legacy at St. Regis.
Location: The Brickell Key Difference
Brickell Key is a man-made island in Biscayne Bay, connected to mainland Brickell by a single bridge, developed by Swire Properties beginning in the 1970s and 1980s as a self-contained residential enclave distinct from the high-rise density of Brickell proper. The island’s defining characteristic — and the one that buyers specifically pay for — is the sense of seclusion it offers while remaining minutes from one of Miami’s busiest urban cores.
From 1 Island Drive, residents are:
- A 10-minute walk to Brickell City Centre
- A 15-minute walk to Downtown Miami
- 10 minutes to the American Airlines Arena (Kaseya Center)
- 15 to 20 minutes to South Beach
- 20 to 22 minutes to Miami International Airport
- 15 minutes to Key Biscayne
The island itself offers a walking path around its perimeter, waterfront promenades, and a small but functional commercial core — a marketplace, restaurants, a dry cleaner, a beauty salon, and a flower shop — meaning residents have genuine daily-life self-sufficiency without needing to cross the bridge for routine errands. A shuttle service connects the island directly to the Brickell Metrorail and Metromover station, giving residents transit access to the broader city without requiring a car for every trip.
That combination — island privacy, daily self-sufficiency, and direct transit and bridge access to one of Miami’s most active urban cores — is the specific value proposition that distinguishes Brickell Key from every other neighborhood covered in this guide series. It is neither a quiet suburban enclave nor a dense urban tower district. It is something closer to a private residential island that happens to sit inside the city.
Mandarin Oriental Residences vs. the Competition
Mandarin Oriental vs. Baccarat Residences Brickell: Both are Brickell-area branded towers from established developers — Swire Properties here, Related Group, and GTIS Partners at Baccarat. Baccarat is mainland Brickell riverfront, pricing from $1.2 million, with a private marina and a 10,000-square-foot restaurant. Mandarin Oriental is Brickell Key island, pricing into the tens of millions at its upper tiers, with the brand’s Asian hospitality heritage and a confirmed $49.9 million penthouse benchmark. For buyers comparing entry price, Baccarat is dramatically more accessible. For buyers specifically seeking island seclusion and the highest tier of branded service, Mandarin Oriental is the clearer answer.
Mandarin Oriental vs. St. Regis Residences Brickell: St. Regis is boutique, bayfront, residences-only, approximately 90% sold, from $4.6 million. Mandarin Oriental spans two towers with a mixed residential-and-hotel program in its North Tower, an island setting distinct from mainland Brickell, and a confirmed record-setting transaction history already established before the building has broken ground. Both carry comparable global hospitality brand weight; the choice is largely a function of island versus mainland positioning and entry price tolerance.
Mandarin Oriental vs. One Thousand Museum: The most interesting architectural contrast in this guide series. One Thousand Museum offers the permanently fixed scarcity of being the only Zaha Hadid residential tower in the Western Hemisphere, at 84 units in Downtown Miami. Mandarin Oriental offers a larger 220-plus-unit South Tower with KPF architecture and Tristan Auer’s organic interior language, on a private island rather than a Downtown cultural corridor. Buyers drawn to architectural singularity choose One Thousand Museum; buyers drawn to island privacy and the broadest global hospitality brand recognition choose Mandarin Oriental.
Who Is Buying at The Residences at Mandarin Oriental?
The buyer profile at this price tier and this stage of construction skews almost entirely toward ultra-high-net-worth individuals and family offices, making a considered, long-horizon capital allocation rather than buyers seeking near-term occupancy. With delivery years away, every current buyer is, by definition, comfortable with an extended pre-construction timeline and the deposit commitment that comes with it.
The two confirmed $49.9 million penthouse buyers were not publicly identified — standard for transactions of this size at this stage — but the broader pattern of more than $1.3 billion in total sales volume across a relatively short sales period indicates a buyer pool drawn specifically to the combination of Brickell Key’s island exclusivity, the Mandarin Oriental global brand, and KPF’s architectural pedigree. This is consistent with the global capital-allocation buyer profile documented elsewhere in this guide series for trophy branded residences — buyers for whom the specific unit matters less than the certainty of owning one of a finite number of addresses carrying this particular combination of credentials.
Investment Outlook: What the Record Actually Signals
The investment case for The Residences at Mandarin Oriental in 2026 is best understood through what the March 2026 transactions actually demonstrate, separate from the headline number itself.
First, genuine institutional confidence in Brickell Key as a location. Swire Properties — the same developer that originally master-planned Brickell Key in the 1970s and 1980s — is betting that the island’s seclusion-plus-proximity value proposition commands pricing at the very top of the entire Miami market, not merely the top of the Brickell submarket. A $6,300-per-square-foot benchmark, even at pre-construction contract stage, is a figure that exceeds the closed transaction pricing documented at every other building in this guide series, including The Surf Club’s $7,949-per-square-foot penthouse outlier.
Second, sales velocity that is genuinely unusual for a project this large. More than $1.3 billion in sales volume with groundbreaking not yet underway, and more than $90 million in a single reported month, suggests demand significantly outpacing the typical absorption curve documented at comparable Brickell pre-construction projects in this guide series.
Third, the redevelopment-of-an-icon narrative. The original Mandarin Oriental hotel was itself a recognized Brickell Key landmark for decades before its 2025 closure. Buyers are not purchasing into an unproven location — they are purchasing into the next chapter of an address that already carried brand recognition in the Miami market before a single new unit was marketed.
The risk profile, as with any pre-construction acquisition years from delivery, includes construction timeline extension, the standard execution risk of any large-scale project, and the reality that record-setting contract prices have not yet been tested by an actual closing and public recording. Buyers should weigh the genuine momentum documented here against the multi-year horizon before delivery.
Frequently Asked Questions
What is the most expensive condo sale in Miami in 2026?
Two duplex penthouses at The Residences at Mandarin Oriental, Miami reportedly sold for $49.9 million each in March 2026 — $99.8 million combined — establishing a benchmark of approximately $6,300 per square foot and marking, according to Swire Properties, the highest-priced condominium sales recorded on mainland Miami. These are signed pre-construction contracts; the public record will confirm final figures upon closing, expected around 2029 to 2030.
When will The Residences at Mandarin Oriental be completed?
Groundbreaking is targeted for late 2026, with delivery of the South Tower anticipated around 2029 to 2030. All dates are developer estimates and subject to change.
How many residences are in The Residences at Mandarin Oriental?
The South Tower will contain 228 private residences across 66 stories. The North Tower will contain 70 private residences, 28 Hotel Collection residences, and 121 hotel guest rooms across 33 stories — a combined total of approximately 298 private residential units between both towers.
What is the price range at The Residences at Mandarin Oriental?
Reported pricing has spanned from approximately $3.9 million for North Tower Hotel Collection residences to $49.9 million for the South Tower’s two uppermost duplex penthouses, with at least one additional penthouse reported with a final asking price of $49 million. Standard South Tower configurations are expected to price well above the North Tower’s entry point, given the South Tower’s residences-only positioning.
Who developed The Residences at Mandarin Oriental?
The Residences at Mandarin Oriental is developed by Swire Properties — the Hong Kong-based developer that originally master-planned Brickell Key — in partnership with the Mandarin Oriental Hotel Group, with architecture by Kohn Pedersen Fox and interior design by Tristan Auer.
Is Brickell Key an island?
Yes. Brickell Key is a man-made island in Biscayne Bay, connected to mainland Brickell by a single bridge, developed by Swire Properties beginning in the 1970s and 1980s. It functions as a self-contained residential enclave with its own small commercial core, distinct from the high-rise density of Brickell proper.
What is the difference between the South Tower and North Tower?
The South Tower is residences-only — 228 private homes across 66 stories, with no hotel guests. The North Tower combines 70 private residences and 28 Hotel Collection residences with 121 active hotel guest rooms, meaning North Tower owners share the building with transient hotel guests, a meaningfully different daily environment than the South Tower.
Ready to Explore The Residences at Mandarin Oriental?
A $99.8 million pair of penthouse contracts, more than $1.3 billion in total sales, and a development that has not yet broken ground — The Residences at Mandarin Oriental is, by every available transaction metric, the most significant new address in Miami’s pre-construction market right now. For buyers evaluating Brickell Key against the rest of the city’s branded residence landscape, the numbers alone make this a conversation worth having.
I am Ashton Coleman, a luxury real estate specialist with One Sotheby’s International Realty, holding the Certified Luxury Home Marketing Specialist (CLHMS) Million Dollar Guild designation, Certified Negotiation Expert (CNE), Transnational Referral Certification (TRC), and Resort & Second-Home Property Specialist (RSPS) designations. I represent buyers across Brickell Key and the full Brickell pre-construction pipeline.
View current floor plans, pricing, and available residences at The Residences at Mandarin Oriental, or contact me directly for a current availability matrix and frank discussion of where the best remaining positions sit before the next sales milestone.
📞 Call or text: 305.978.7704
📧 Email: AColeman@onesothebysrealty.com
🌐 Search all Brickell Key luxury condos at MiamiPenthousesandEstates.com
Information provided is for informational purposes only and subject to change without notice. Pricing, availability, and completion dates are based on developer representations and market data current as of Q2 2026. Reported pre-construction contract prices, including the $49.9 million penthouse transactions referenced in this guide, have not yet been confirmed via public closing records. Verify all details directly with the developer or your legal and financial advisors prior to entering any transaction.
