Florida's milestone inspection law, under Statute 553.899, requires every condo building three habitable stories or taller to pass a structural inspection by its 30th year, or 25th year within three miles of the coast. From the Compass desk I am seeing older Miami Beach buildings re-price the moment a Phase 2 report lands. Before you go firm on any pre-2000 condo, pull the inspection report and the reserve study first.

The Champlain Towers South collapse in Surfside on June 24, 2021 killed 98 people and reset Florida condo safety law. Out of that tragedy came SB-4D in 2022 and the milestone inspection requirement now written into Florida Statute 553.899. If you are buying an older Miami condo in 2026, the milestone inspection is the most important document you will read, and most buyers never ask for it. It tells you whether the building is structurally sound, whether invasive Phase 2 testing was needed, and whether a large repair bill is coming. This guide walks through exactly how the law works, what changed under HB 913 in 2025, and the records I pull for every client before they sign.
What the Milestone Inspection Law Actually Requires
Florida Statute 553.899, the milestone inspection law, applies to every condominium and cooperative building that is three habitable stories or more in height. A licensed Florida engineer or architect must inspect the building's structural integrity to confirm it is safe for continued use and to identify any substantial deterioration. The inspection covers the load-bearing structure: foundation, columns, load-bearing walls, floor and roof framing, balconies, and waterproofing. This is not a routine code inspection. It is a structural integrity check born directly out of the Surfside collapse, and it is mandatory, not optional, for the buildings it covers.
When the First Inspection Is Triggered: 30 Years, 25 on the Coast
The trigger is age. A building must complete its first milestone inspection by December 31 of the year it turns 30 years old, measured from the date of its certificate of occupancy. For buildings located within three miles of the coastline, the trigger drops to 25 years. After the first inspection, the building must be re-inspected every 10 years for the rest of its life. This single rule explains why so much of Miami's aging oceanfront inventory, the 1970s through 1990s towers lining Collins Avenue and the barrier islands, hit the requirement first: they are both old and coastal, so the 25-year clock applies.

Phase 1 vs Phase 2: The Distinction That Decides Your Risk
The milestone inspection is not one event. Phase 1 is a visual evaluation by a licensed engineer or architect of the building's structural components. If Phase 1 finds no signs of substantial structural deterioration, the process ends there and the building is certified. Phase 2 is triggered only when Phase 1 identifies substantial deterioration. It requires invasive testing: concrete core samples, laboratory analysis, corrosion mapping, and detailed engineering modeling. A building sitting in Phase 2 is in a completely different risk category from one where Phase 1 came back clean. When a buyer asks me to evaluate an older condo, the first question I answer is simple: did Phase 1 pass, or did it kick into Phase 2?

What Changed Under HB 913 in 2025
The legislature refined the law in 2025 with HB 913, which is now in effect. Three changes matter most to buyers. First, the inspection requirement is clarified to apply to buildings three "habitable" stories or more, narrowing some edge cases. Second, the deadline to complete a Structural Integrity Reserve Study was extended to December 31, 2025, giving associations more runway to fund the repairs an inspection reveals. Third, the bill added flexibility on reserve funding and on the timeline to commence repairs after a Phase 2 report. According to the Florida Senate bill summary and the Florida post-Surfside legislative analysis, HB 913 refined rather than replaced the SB-4D framework. The core structural inspection duty did not get weaker.
The Reserve Study and the Repair Clock
A milestone inspection finds problems. The Structural Integrity Reserve Study (SIRS) and the building's reserves are what pay to fix them. Per the Florida Department of Business and Professional Regulation, associations were required to complete a SIRS by December 31, 2025 under the HB 913 timeline. When a Phase 2 report identifies necessary structural repairs, the association must commence those repairs within a defined window. That repair clock is what converts a quiet engineering report into a real, dated financial obligation for every unit owner. A buyer who reads only the price and the HOA fee, and skips the inspection and the SIRS, is buying blind to the single largest variable in an older condo's cost of ownership.
"Before I let a buyer go firm on any older Miami condo, I pull the milestone inspection report and the reserve study myself, because a Phase 2 finding can hand the building a repair bill that lands on your closing statement months later."Gerardo Gonzalez, Licensed Real Estate Agent at Compass
Does It Apply to New Pre-Construction? Not for Decades
This is where new construction has a structural advantage that rarely gets discussed. A milestone inspection is not triggered until a building reaches 30 years, or 25 on the coast. A brand-new pre-construction tower delivered in 2026 will not face its first milestone inspection until the 2050s. For the first quarter-century of its life, that building carries no milestone-inspection or Phase 2 risk at all, and its reserves are funded from day one under current law. According to Miami Association of Realtors data, Miami-Dade condo sales rose for a seventh consecutive month into April 2026, and part of that demand is buyers deliberately choosing newer, inspection-clear inventory. If you are weighing an aging resale against new construction, the inspection timeline belongs in the math.
"The milestone inspection isn't red tape. It is the market finally pricing in the true cost of an aging building. Towers that were responsibly maintained pass Phase 1 and get rewarded. Towers that deferred maintenance for thirty years get revealed. As a buyer, you want to know which one you are walking into before you sign."
If you are targeting a specific building, send me the address and I will pull the milestone inspection status, whether Phase 2 was triggered, and the reserve funding picture so you know exactly what you are buying.
Milestone Inspection Timeline at a Glance
The simplest way to know whether a building you are considering is exposed is to map its age and location against the triggers. Here is how the deadlines line up:
| Building situation | Milestone trigger | Re-inspection |
|---|---|---|
| Inland building (3+ stories) | By end of year it turns 30 | Every 10 years |
| Within 3 miles of coastline | By end of year it turns 25 | Every 10 years |
| SIRS (reserve study) deadline | December 31, 2025 (HB 913) | Updated every 10 years |
| New pre-construction (2026) | Not until the 2050s | Every 10 years thereafter |
For most of Miami's pre-2000 oceanfront stock, the 25-year coastal trigger has already passed, which means the inspection should already exist. If a seller cannot produce it, that is a signal, not a formality to wave through.
The Three Statuses a Building Can Be In
From the older-condo deals I am working right now, every building I look at falls into one of three milestone-inspection statuses, and the status matters as much as the asking price.
Status 1: Passed Phase 1, certified. The engineer inspected the structure, found no substantial deterioration, and signed off. This is the clean outcome. These buildings have a current certificate, a completed SIRS, and a known reserve picture. They are the resale targets I prefer for clients who want full visibility before closing. The inspection itself is public record through the local building department.
Status 2: In Phase 2. Phase 1 found substantial deterioration and invasive testing is underway or complete. The building knows it needs structural repairs and is on the repair clock. These are not automatically bad buys, beachfront concrete restoration is normal, but the repair cost and funding plan must be on the table before you go firm. I price in the disclosed repair estimate and push for seller credit on any unfunded balance.
Status 3: Inspection overdue or undisclosed. The building hit its trigger but the report is not done, or the seller will not produce it. This is the highest-risk status for a buyer because the structural picture is genuinely unknown. My protocol here is simple: I do not let a client go firm until the report exists. If the timeline does not allow that, I push closing out or walk. For the full due diligence framework, see my condo financial health evaluation guide and the SB-4D special assessments guide.

What This Means for Resale Prices and Newer Buildings
The market is sorting buildings by inspection outcome in real time. Per Miami Association of Realtors data, Miami-Dade condo median prices have held steady or risen in 164 of the last 178 months, but that headline hides a widening gap: inspection-clear and well-reserved buildings keep appreciating, while towers stuck in Phase 2 or facing a disclosed repair bill are sitting longer and trading at a discount. Buyers are not avoiding older condos, they are avoiding uncertainty. A 1985 building that passed Phase 1 and funded its reserves can be a strong buy. The same vintage building that is overdue or mid-Phase-2 with no funding plan is a different proposition entirely. For how I weigh this against new construction, see the Miami pre-construction buyer guide and the true cost of owning a Miami luxury condo.

My Pre-Closing Checklist for an Older Miami Condo
When a client wants an older building, this is the exact paper trail I assemble before anyone goes firm on price:
- The milestone inspection report. Confirm it exists, that it is current, and read the engineer's findings, not just the cover page.
- Phase 2 status. Establish whether Phase 1 passed or whether Phase 2 testing was triggered, and if so, what it found.
- The Structural Integrity Reserve Study. The SIRS shows what the building must fund and on what schedule.
- The repair and funding plan. If repairs are required, get the board's plan, the timeline, and the per-unit cost in writing.
- Recent board minutes. The last 24 to 36 months of minutes reveal what the building is actually debating about its structure and money.
None of these documents are hard to obtain. The local building department holds the inspection records, and the association holds the SIRS and minutes. Any licensed agent can pull them. The buyers who get hurt are the ones who never ask. For the procedural side of closing, see the Miami buying process guide.
Frequently Asked Questions
What is a milestone inspection in Florida?
A milestone inspection is a mandatory structural assessment required under Florida Statute 553.899 for every condominium and cooperative building three habitable stories or more. A licensed engineer or architect evaluates the building's structural integrity to confirm it is safe and identify any substantial deterioration.
When is a Florida condo's first milestone inspection due?
The first milestone inspection is due by December 31 of the year the building turns 30 years old, measured from the certificate of occupancy. For buildings within three miles of the coastline, the trigger is 25 years. After the first inspection, the building must be re-inspected every 10 years.
What is the difference between Phase 1 and Phase 2?
Phase 1 is a visual inspection of the building's structural components. If the engineer finds no substantial structural deterioration, the process ends. Phase 2 is triggered only when Phase 1 finds substantial deterioration and requires invasive testing such as concrete core samples and corrosion mapping. After a Phase 2 report, the association must commence repairs within a set timeframe.
How did HB 913 change the milestone inspection law in 2025?
HB 913, effective in 2025, clarified that the requirement applies to buildings three habitable stories or more, extended the deadline to complete a Structural Integrity Reserve Study to December 31, 2025, and added flexibility on reserve funding and repair timelines. It refined rather than replaced the SB-4D framework that followed the Surfside collapse.
Does the milestone inspection apply to new pre-construction condos?
Not for decades. A milestone inspection is not triggered until a building reaches 30 years, or 25 years on the coast. A brand-new pre-construction tower delivered in 2026 will not face its first milestone inspection until the 2050s, which is one reason new construction carries far lower near-term structural and assessment risk.
What should a Miami buyer request before closing on an older condo?
Request the completed milestone inspection report, confirmation of whether Phase 2 was triggered, the Structural Integrity Reserve Study, and the board's funding plan for any required repairs. These records are available through the local building department and the association. Reviewing them before going firm is the single best way to avoid a six-figure post-closing surprise.
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