Here comes edition 02 of the Miami Weekly Radar — the weekly journal of Miami-Dade luxury transactions, with address, price, date and source on every item. Verified data only, framed for buyers and investors.
The headline: 255 Ocean Boulevard, Golden Beach — $69.5M all-cash
Meridian Coast LLC paid $69.5 million in cash for a 17,500-square-foot mansion in Golden Beach — $3,970 per square foot (The Real Deal, 09/30/2026). The property at 255 Ocean Boulevard has seven bedrooms, 12 bathrooms, a guest house, pool, spa and 100 feet of ocean frontage on a 0.7-acre lot.
The detail that tells the story: the seller — tied to Treo Construction — had bought the property for $10.7M in 2021. Five years later, it sold for nearly 6.5 times that amount. The listing was held by Dina Goldentayer (Douglas Elliman); the buyer was represented by Hillary Hertzberg and Jill Eber (Coldwell Banker Realty).
For the investor: Golden Beach is micro-market No. 10 in our $30M+ series — a narrow strip between the Intracoastal and the ocean, with strictly limited supply. When waterfront is scarce and demand is global, price per square foot tells the story on its own.
Wynwood: Ken Griffin pays $1.1B for Mana Wynwood
Billionaire Ken Griffin (Citadel) closed on Mana Wynwood — 30 acres at 318 Northwest 23rd Street — for an estimated $1.1 billion, in cash, from Moishe Mana (The Real Deal, 09/30/2026). It is the largest land assemblage in Florida history.
The plan: a 35-acre Carnegie Mellon University satellite campus in Miami, part of Griffin's gift of more than $3 billion to the university. Construction is slated for 2027, with the first graduate students in 2028.
For investors in the surrounding area: an elite university anchors a neighborhood's transformation for decades — demand for housing, services and retail around it. Wynwood, Edgewater and Midtown belong on the radar of anyone who follows infrastructure, not just listings.
Allison Island: Lil Wayne's mansion sold for $22M
Rapper Lil Wayne's 10,600-square-foot mansion on Allison Island sold for $22M — after being listed at $30M and reduced to $28M (Josh Stein, 09/28/2026). Seven bedrooms, nine bathrooms and 110 feet of water frontage, built in 2017. He had owned it since 2018, when he paid $17M.
For the buyer: even in the trophy market there is room to negotiate. The cut from $30M to $22M shows that a motivated seller and a prepared buyer do meet — and whoever arrives with market knowledge buys well, even at the top.
The stat of the week: 24 sales above $30M in the half
Miami-Dade recorded 24 transactions above $30M in the first half of 2026 — nearly double the same period last year and more than New York's 17 in the period (Analytics Miami, via Bloomberg). The annual record is 33 sales (2025); in 2019 there were only 2. Nearly every transaction was paid in cash.
For those moving capital into dollars: ultra-luxury follows its own logic — cash buyers, immune to interest rates, driven by wealth migration from high-tax states. It is where global capital meets.
New developments: Waldorf Astoria Miami 90% sold
The Waldorf Astoria Miami tower in Downtown has reached level 85 of 100 — topping out expected in winter 2026 and more than 90% sold, for delivery in the second quarter of 2028 (Haute Residence, September 2026 ranking). Also in the ranking: Cipriani Residences more than 80% sold, and the Mandarin Oriental on Brickell Key with $1.3B sold and groundbreaking in late 2026.
No appreciation promised: branded product keeps absorbing fast in Miami — 90% sold before topping out is the thermometer of demand for branded residences.
The Radar returns next week with new closings, listings and market milestones. Until then, the numbers above are the map — and a good map is one that helps you decide.