"If a hurricane were to knock it down, you could rebuild it." Walter Defortuna said this to Islander News in August, describing Coral Reef at Key Biscayne, the 51-unit apartment hotel at 303 Galen Drive that he had agreed to buy. He wanted permission to tear it down and replace it with the same 51 units. He called the code "tricky," and that is an understatement.
Anyone weighing an older condominium on the island should understand the rule underneath his remark. Key Biscayne protects a building's existing unit count when nature destroys it. It does not clearly protect that count when the owners choose to rebuild. In many Miami submarkets an aging building carries a quiet promise that a developer might someday buy everyone out. On Key Biscayne that promise is much weaker. The value of an older unit rests on the building's upkeep, reserves, and assessments.
A rebuild right that depends on a storm
The Village's comprehensive plan caps its High Density Multifamily Residential category at 30 dwelling units per acre. The same passage says the cap does not stop the repair or reconstruction of a building "damaged by any natural disaster or other casualty," as long as the rebuild does not exceed the original density or intensity. The plan states no matching exception for an association or developer that decides to demolish voluntarily.
That gap matters because the cap sits below what is already standing. Islander News reported in September that 30 units per acre is less density than nine of the 13 buildings governed by the high-density category. Those 13 buildings average 54.3 years old. The paper also reported that some public speakers said the low limits were set on purpose, while a former Village official had called them a mistake.
Keeping an over-density building as it is creates no problem. The Village zoning code lets legally established nonconforming structures continue and be maintained. Expansion is where the rules bite. If a single proposed improvement, or the cumulative square footage added over time, reaches 50% of the structure's net square footage at the time it became nonconforming, the whole structure and site must come into compliance. The zoning code also says that where density may exceed the district limit as the comprehensive plan provides, repair or reconstruction must stay within the building envelope approved when the certificate of occupancy was issued. These buildings can be repaired and kept running. Islander News described the current rules as allowing reconstruction at existing density only when a natural disaster strikes. That is why the Coral Reef proposal came with code amendments attached.
What 303 Galen Drive tested
Coral Reef was built in 1967, and its 51 units are one- and two-bedroom rentals. Defortuna has lived on Key Biscayne for 45 years. He proposed replacing it with a 14-story glass building that keeps the same 51 units, makes them larger, and adds lower-level parking, an amenity floor with pickleball and a pool, and a drainage system meant to address years of flooding in that part of Galen Drive. He also gave the fiscal case. He said the property pays about $26,000 a year in Village property tax and would pay $550,000 more each year after redevelopment.
The plan reached the Village Council as item 7E on the August 25, 2026 agenda, presented by Galen Drive MW, LLC. A special meeting on September 10 included a site-plan workshop and first readings of two measures. One was a comprehensive-plan amendment. The other was an amendment to Section 30-105, the RM-30 zoning district, that would create development incentive bonuses. Under the proposed framework, properties could be rebuilt at their current density without waiting for a disaster, and a bonus system could add intensity.
The meeting ran more than three hours, and 23 of the 37 public speakers opposed the project. Their concerns included traffic, population, the character of the Garden District, and whether the code was being adjusted for a single developer. The first reading reached an impasse, and Council deferred the project without a timeline. Outgoing Mayor Joe Rasco declared the impasse and summed up the tension that now faces every older building in the category:
"We don't want density or intensity, but people have property rights and they eventually want to redevelop these properties. We just can't say you can't do anything."
Rasco moved to bring in an independent consultant or a new Zoning Ordinance Review Committee team to work with the Village Attorney and staff. Incoming Mayor Brett Moss, who chairs ZORC, said he would expand the committee's review to the Garden District and study the floor area ratios in RM-16 and RM-30, working on it "until November."
Defortuna asked for no additional units, and the hearing still could not produce a rule. That tells an owner in one of the other over-density buildings that a rebuild at the current count is not available today and will not come quickly.
Silver Sands needed its own ordinance
On paper, the island's most visible redevelopment looks like a counterexample. Terra Group and Fortune International Group paid $205 million for the Silver Sands site at 301 Ocean Drive, which CoStar reported in April 2025. Islander News called it the highest-priced land sale in Key Biscayne history.
The approval path is what matters for buyers. In 2024 the Council voted 7–0 for a project-specific ordinance converting the hotel use to residential. It approved the site plan unanimously and granted three variances. One lets the building sit 3 feet above Base Flood Elevation while staying within the 150-foot height maximum, and another adjusts a setback. The project replaces a 116-room resort with a 56-unit condominium, and the council discussion described the lower count as a compromise and the least density on the beach.
Silver Sands moved forward with fewer homes on the site than before. Coral Reef stalled while asking to keep the same number. The approved route on the island has so far meant reducing density. In the most recent update, the hotel was still being demolished, vertical construction had not started, and construction was expected to begin later in 2026.
Florida's rebuild law reaches the island but works off the local cap
Buyers who follow Florida condo law often expect the Resiliency and Safe Structures Act, Section 553.8991, to settle this. The statute covers buildings on property that lies at least partly seaward of the coastal construction control line and that are nonconforming, deemed unsafe by a local building official, or ordered demolished. It exempts buildings on a barrier island in a municipality with fewer than 10,000 residents that meets a separate flood-zone test. The 2020 Census counted 14,809 residents in Key Biscayne, so the Village does not meet the population condition for that exemption.
What the statute guarantees, though, is measured against local rules. It requires that replacement structures be allowed "the maximum height and overall building size" permitted for a similarly situated parcel in the same zoning district. It also bars local governments from limiting development potential below the maximum that local regulations allow. Where the local maximum is 30 units per acre and a building already exceeds it, the text does not promise the building its old unit count. Whether a given tower qualifies at all depends on where it sits relative to the coastal line, and that has to be confirmed building by building.
| Path to a new building | Rule that governs it | What it protects |
|---|---|---|
| Casualty loss | Village comprehensive plan | Rebuild up to original density |
| Voluntary demolition | Village comprehensive plan and zoning code | No stated protection above 30 units per acre |
| State act, Section 553.8991 | Applies to qualifying buildings seaward of the coastal line | The maximum allowed for a similar parcel in the same district |
| Project-specific ordinance | Council vote, the Silver Sands route | Whatever Council approves |
Where buyers feel this in a transaction
If a developer is unlikely to buy out an older building, its long-term condition falls to the owners, and the cost of that shows up as special assessments. In a snapshot dated September 25 and published by Islander News, 23 of the 101 active condo listings on Key Biscayne in the MIAMI MLS declared a special assessment, 65 declared none, and 13 left the field blank. Among listings that answered, that works out to 26.1%, slightly above the 23.6% rate for Miami as a whole that day. Listings in buildings finished before 1998 showed a 28.2% rate, compared with 17.6% for newer buildings, though the newer group was a very small sample. The agent behind the analysis pointed out that the field only records what the listing agent declared, so the figures are a minimum, not a full count, and a blank does not mean "no."
Thirteen blanks among 101 listings is a real gap in disclosure. Before an offer on an older island unit, a buyer's diligence should cover:
- Whether the building falls under the high-density category and whether its unit count is above 30 per acre.
- Whether any assessment is in place or under discussion, confirmed in writing by the association, since the listing field may be blank.
- Where the building sits relative to the coastal construction control line, which decides whether the state statute could apply.
- What the association's reserve and repair plan assumes about the building's remaining life, given that a voluntary rebuild at the current count has no clear path.
What remains unsettled
The Village scheduled a Council workshop on RIAP updates and ZORC recommendations for September 29. We have not found a public account of its outcome. A regular Council meeting is set for October 13. A resident's letter in Islander News asked for a written legal analysis of whether a higher floor area ratio at 303 Galen would trigger referendum rights under the Village Charter, which the writer argued the 2022 charter change preserved. That letter is an opinion, not a Village finding. Any change to the casualty-only rule therefore still depends on ZORC's work, a Council vote, and possibly a legal question about the Charter.
A few direct answers
Can an over-density building on Key Biscayne be repaired and kept as it is? Yes. The zoning code lets legally established nonconforming structures continue and be maintained. Compliance requirements apply when an improvement, or cumulative added square footage, reaches 50% of the structure's net square footage at the time it became nonconforming.
Is the Coral Reef project dead? It was deferred without a timeline on September 10, and Defortuna said he would talk with neighbors. No final decision has been made.
Does a newer building avoid the issue? Newer listings declared assessments less often in the September snapshot. The density question depends on the building's land-use category and unit count, not its age alone.
Diligence on an older Key Biscayne building now involves Village land-use rules, a state statute, and an association's reserve plan. These questions rarely appear on a listing sheet. Swann Realty reviews building-level density, assessment, and governance questions with buyers and owners before they commit. If you are weighing a unit in one of the island's older towers, we would be glad to walk through that building's file with you. Schedule a Consultation.
