On Key Biscayne, a Condo's Completion Year Now Shapes the Price

In an earlier account in Islander News, a resident of The Sands described his building's latest special assessment. It came to $50,000, payable up front or at about $1,100 a month over five years with interest, and it followed earlier assessments that had cost him $187 a month for five years. The Sands went up in 1969, and the same account described concrete restoration underway and sprinklers going into all 120 units.

That number belongs to one building at one moment. On Key Biscayne, listings in older and newer buildings show different rates of declared special assessments. Very few buildings on the island are young.

The Line on the Listing That Carries the Most Weight

Miami's MLS asks each listing whether the unit carries a special assessment. Islander News reported in early October on an analysis of that field. As of September 25, 2026, 23 of the 101 active Key Biscayne condo listings declared an assessment, 65 declared none, and 13 left the field blank.

Among the listings that answered, that is 26.1%, only a little above Miami's 23.6% on the same day. Taken at face value, the island looks like any other condo market. The gap shows up once the listings are sorted by the year the building was finished.

Two figures in that table explain the island. The first is the size of each group. The island's breakdown counted 71 listings in buildings finished before 1998 and only 17 in newer ones. Seventeen listings is also too few to say much about the newer group. The second is the citywide pattern. Across Miami, an older condo was about 3.3 times as likely as a newer one to carry a declared assessment. Buildings from the 1960s, '70s and '80s came in near 40%, the 1990s at about half that, and the 2010s at 4.3%.

The field has limits. A listing agent fills it in, so it shows the minimum, and a blank does not mean no. An assessment does not necessarily mean that a building is unsafe. Associations levy them for concrete, roofs, seawalls, elevators, insurance and catching up on reserves, and many well-run buildings carry one because they are doing that work.

Why 1998 Is the Line

The analysis drew its line at 1998 because Miami-Dade's own recertification rule uses that year. The following are part of the inspection and reserve picture:

1. County recertification. The Village of Key Biscayne follows state and county codes.
2. State milestone inspection. Section 553.899 of the Florida Statutes addresses milestone inspections for condo buildings.
3. Structural integrity reserve study. Section 718.112 addresses structural integrity reserve studies, or SIRS. The Florida Department of Business and Professional Regulation notes that the resulting funding schedule may require assessments or borrowing.

In 2025 the Legislature gave associations some room. According to the Florida Senate's summary of HB 913, the law changed SIRS deadlines and reserve rules. It generally took effect July 1, 2025. A 2026 bill, SB 722, would have let some associations reduce or waive reserve contributions by majority vote. It died in committee on March 13, 2026.

How the Same Clock Played Out in Two Buildings

Islander News covered two buildings that show the range. In coverage after Surfside, Oceansound in Key Colony reported finishing its 40-year recertification two months early. It spent $194,000 and charged residents no assessment or extra fees. The building had hired its engineering and architecture firm in 2014.

Also in Key Colony, in Key Colony III, sits Emerald Bay, a 12-story, 285-unit building finished in 1980. Islander News reported in March 2024 that it had been doing recertification-related maintenance since 2017. That spring it was repairing concrete spalling and post-tension cables in its garage as part of a larger restoration of the pool and parking deck.

Both are years-old snapshots, not current conditions. Together they show the same schedule producing different bills. Oceansound had its engineers hired by 2014 and finished without an assessment. At The Sands, a 1969 building with concrete and sprinkler work underway, owners were carrying a five-year assessment.

The First New Condo in More Than a Decade

Key Biscayne's newer end has almost no stock, which is why 17 listings in the post-1998 group is not a typo. The building expected to add to it is on the site of the former Silver Sands Beach Resort at 301 Ocean Drive. Terra and Fortune International Group bought the 3.8-acre property in April 2025 for $205 million, the highest price ever paid for land on the island, and the 56-room motel from 1956 has been demolished. Islander News describes it as the first new condominium project on Key Biscayne in more than a decade.

The Key Biscayne Independent reported on November 2 that the developers had secured a $220 million predevelopment loan from Blackstone Real Estate Debt Strategies. Preconstruction sales are expected to start later this year. The plans the Village Council approved in October 2024 call for 56 residences above a 221-space underground garage. Touzet Studio and ODP are the architects, Raymond Jungles is designing the landscape, and the building's form draws on the Stiltsville houses in Biscayne Bay. As part of the project, Terra committed $1.5 million to the Village's Land Acquisition Trust for infrastructure and traffic improvements.

Demand Has Not Waited for the Older Stock

None of this has cooled the island. In its September 23 outlook, which looked at August 2026 conditions, MIAMI REALTORS named Key Biscayne among South Florida's hot condo and townhome markets. In those markets, supply ran 12 months or less and the median time on market was under a year.

Questions Buyers Raise

Does a declared special assessment mean a building has structural problems? Not necessarily. As Islander News reported, an assessment is a charge beyond the regular budget. It can cover concrete restoration, a roof, a seawall, elevators, insurance or reserve catch-up, and many well-run buildings carry one because they are doing the work.

Does a blank assessment field mean there is none? No. The listing agent fills in the field, and a blank is not counted as a no.

At David De Leon, we read a building's inspection and reserve history as closely as its floor plans. That applies whether you are weighing a 1980s residence on Key Biscayne or new construction across the bay in Brickell. If you would like a quiet second look at the documents behind a residence you are considering, Contact Us.