Over four years after the tragic collapse of an apartment complex in Florida that resulted in 98 fatalities, federal investigators still haven’t pinpointed the exact cause, although they have several leading theories.
The National Institute of Standards and Technology (NIST), which is overseeing the inquiry, indicated this week that it aims to conclude the investigation by 2026.
“This failure demands investigation that will have a lasting impact, to save lives in the future and ensure it doesn’t happen again,” said NIST investigator Judith Mitrani-Reiser in a recent report.
When the Champlain Towers South collapsed on June 24, 2021, most residents were asleep in the building, which was 12 stories high, located in Surfside, Florida.
Interestingly, a new luxury apartment complex is currently under construction at the site of the Champlain Towers, just a few miles north of Miami.
What is the cause of the collapse?
NIST is focusing on what they term three “higher likelihood” scenarios, all linked to construction defects that date back to the building’s inception 40 years ago.
“These issues were present from the time the construction was finished 40 years before the partial collapse,” stated Glen Bell, co-lead investigator for NIST’s National Construction Safety Team.
One theory suggests a failure in the connection between a building column and a pool deck, which may not have adhered to building code standards. Another possibility is that the steel reinforcements were improperly placed, resulting in weakened structural integrity of the columns and pool decks.
The third theory posits that renovations made around the pool—like adding heavy planters, sand, and pavement—might have overloaded the deck, leading to its functional and structural inadequacies.
The NIST report also notes that support columns in underground parking garages are often vulnerable to flooding, which can cause corrosion of steel reinforcements as well as deterioration of concrete.
Are there any other theories?
Investigators have not found any blank evidence regarding “Karst” beneath the building. Using satellite data, the NIST team determined that the area was not sinking or settling, suggesting the presence of Karst formations.
They also found that the limestone under the condo could adequately support the building, and that the concrete was up to standard for material strength.
One significant hurdle for investigators is the lack of available documentation from when the original building was constructed, especially concerning earlier years.
How do other condo buildings handle the new rules?
In the wake of the Surfside disaster, state lawmakers passed a law in 2022 mandating that condominium associations maintain sufficient reserves for large-scale repairs. Some residents were surprised by the hefty fees required to address long-overdue maintenance issues to comply with these new regulations.
This week, Governor Ron DeSantis signed a law allowing various condo associations to finance their reserves through loans or lines of credit. It also gives residents the ability to temporarily suspend reserve payments while concentrating on urgent repairs, extending deadlines for condo associations to conduct structural integrity assessments, and exempting smaller buildings from these obligations.
“Now’s the time for change,” said Senator Ed Hooper. “The elderly are losing their condos because they can’t keep up with rising HOA fees. That’s just not right.”
What is being built on the site?
A luxury condominium known as Delmore is underway, featuring 37 “mansions,” with prices starting at $15 million. The site was acquired at auction by Dubai-based Damac International for $120 million.
The new building will boast amenities like a swim-through pool, an indoor pool, an outdoor kitchen, a fitness center, and a meditation garden, with completion expected by 2029.
Is there a memorial to the victims?
This year, Surfside officials and the Family Committee approved a design for a monument honoring the 98 victims. However, the city’s planning and zoning committee opposed its look and suggested exploring other options.
Current proposals include showcasing elements such as tall “water walls” and materials from the collapsed structure. Surfside officials aim to facilitate the project, remaining open to additional input, particularly from the Family Committee.
“I get the urgency, but this monument will be a lasting tribute for everyone involved,” remarked Lindsay Lecour, chair of the planning committee, during an April city committee meeting.





