Brickell Key is forty-four acres of man-made island reached by one bridge, guard-gated, and effectively built out since the late 2000s. Swire Properties built it from the late 1970s onward and still controls what happens on it. That is the whole picture, and right now it is more complicated than it looks from the causeway.
First, a $32.3 million special assessment for the Brickell Key Shoreline Resiliency Initiative — seawall rebuild and baywalk repairs — has been levied through the master association. Five condominium associations — Brickell Key One, Brickell Key Two, Isola, Courvoisier Courts and Carbonell — sued Swire in Miami-Dade Circuit Court in May 2026, alleging the work is required because of Swire’s own Mandarin Oriental construction and that unit owners are being obliged to pay to maintain a seawall that is Swire property rather than master property. Reported per-unit exposure is roughly $10,000, though the final allocation is unresolved while the suit is pending — verify against the specific building’s estoppel. Second, the former Mandarin Oriental hotel was imploded on 12 April 2026. Groundbreaking on its replacement is late 2026 and completion is 2030. Buying here today means buying a four-year construction site.
Verified 3 August 2026. Source: The Real Deal, 26 May 2026 and Florida YIMBY, 14 April 2026.
What Brickell Key costs — and why no honest source publishes a median
Brickell Key is not reported as a separate market. No MLS aggregator, brokerage report or trade publication isolates it from Brickell as a whole, and the island is small enough — roughly a dozen buildings — that any median would be noise. Anyone quoting you a Brickell Key median is making it up.
What can be sourced: Brickell Key active listings average $1,382,587 at $946 per square foot, against North and South Brickell combined at $1,217,044 and $959 per foot. Those are asking prices.
For the surrounding market, the Brickell luxury segment above $1 million closed 57 sales in Q1 2026 — flat year over year — at a median of $1,675,000 (up 13.9%) and $950 per square foot (up 1.4%), carrying 28 months of inventory and 75 days on market. Wider Brickell Avenue in April 2026 showed 1,170 active condominiums asking an average $842 per foot against a summer 2025 clearing price of $656 — roughly a 28% gap between ask and sale.
The record, and why it is not a comparable
In March 2026 two duplex penthouses at The Residences at Mandarin Oriental went under contract at approximately $49.9 million each — over 7,800 square feet apiece with private pools, roughly $6,300 per square foot, a record for mainland Miami. They are combinable into a single crown penthouse near $100 million.
Those are presales in an unbuilt tower, not recorded transactions, and they are not a comparable for a 1990s Brickell Key building. New construction and resale on this island are moving in opposite directions right now: record presale pricing on one side, twenty-eight months of inventory and a 28% ask-to-close gap on the other.
What is being built
The Residences at Mandarin Oriental, Miami at One Island Drive, by Swire Properties. A 66-storey south tower with 228 residences and a 34-storey north tower holding 70 residences, 28 hotel residences and 121 hotel rooms. Architecture by Kohn Pedersen Fox, interiors by Tristan Auer and Laura Gonzalez. More than $1.3 billion in residential sales recorded to date. The old hotel came down in April 2026; groundbreaking is late 2026 and delivery is 2030.
This is the island’s last waterfront development site. After it, Brickell Key is finished.
Every building on Brickell Key
A 44-acre private island reached by one bridge, guard-gated, and effectively built out. There is no more land here.
- Asia Brickell Key
Brickell Key Blvd - Carbonell Brickell Key
Brickell Key Blvd - The Residences at Mandarin Oriental, Miami New
Residences At Mandarin Oriental Miami Pre-Construction Condos 1 Island Drive - Three Tequesta Point
Brickell Key Drive - Two Tequesta Point
Brickell Key Drive
What to check before you buy on Brickell Key
The estoppel, specifically for the shoreline assessment. Ask what has been levied on that unit, what has been paid, what remains, and whether the association is one of the five plaintiffs. A recorded, already-voted assessment typically follows the unit to you.
Which side of the island the unit faces. Construction runs from late 2026 into 2030 on the Mandarin site. Views, noise and access will be affected unevenly.
The building’s milestone inspection and reserve study. Most of Brickell Key predates 2000, which puts it inside the coastal 25-year inspection cycle with non-waivable structural reserves. Use the seven-day financial review window under HB 913.
Whether the building is warrantable. Ask for the association’s most recent lender questionnaire before you write an offer. With a live assessment and litigation, this is not a theoretical question.
Who Brickell Key suits
It suits a buyer who wants a guard-gated island with a bay walk and a five-minute drive to Brickell Avenue, and who is genuinely comfortable underwriting the assessment and four years of construction — ideally at a price that reflects both.
It does not suit anyone who needs quiet or certainty in the next thirty-six months. That is not a knock on the island. It is a timing question, and right now the timing is the negotiation.
Brickell Key — frequently asked questions
What is the special assessment on Brickell Key?
A $32.3 million assessment for the Brickell Key Shoreline Resiliency Initiative — seawall repair and rebuild plus baywalk work — levied through the master association. Reported per-unit exposure is roughly $10,000, but the final allocation is unresolved: five condominium associations sued Swire in May 2026 arguing the work is needed because of Swire’s own Mandarin Oriental construction and that owners should not fund a seawall that is Swire property. Verify the number against the specific unit’s estoppel.
What is the median condo price on Brickell Key?
There isn’t a reliable one, and you should be suspicious of anyone who quotes you one. Brickell Key is roughly a dozen buildings and is not reported as a separate market by any MLS aggregator or trade publication. Active listings average about $1,382,587 at $946 per square foot — asking prices, not closings. The surrounding Brickell $1M+ segment closed at a $1,675,000 median and $950 per square foot in Q1 2026.
How long will construction last on Brickell Key?
The Mandarin Oriental hotel was imploded in April 2026. Groundbreaking on the replacement — a 66-storey and a 34-storey tower by Swire — is expected late 2026, with completion in 2030. Plan on roughly four years.
What is the most expensive sale on Brickell Key?
Two duplex penthouses at The Residences at Mandarin Oriental went under contract at about $49.9 million each in March 2026 — over 7,800 square feet apiece at roughly $6,300 per square foot, a record for mainland Miami. They are presale contracts in an unbuilt tower, not recorded sales, and they are not comparables for existing Brickell Key buildings.
Sources
- The Real Deal — Swire sued over $32 million Brickell Key condo assessment, 26 May 2026
- Florida YIMBY — Controlled implosion clears Brickell Key site for The Residences at Mandarin Oriental, 14 April 2026
- MIAMI REALTORS — Miami-Dade June 2026 market report, 17 July 2026
Related coverage
Part of Neighborhoods.