What a milestone inspection is
A milestone inspection is a structural inspection of a building's load-bearing walls and primary structural members and systems, performed to assess life safety and the adequacy of structural condition, and to determine any necessary maintenance, repair or replacement. That is the statutory description at Fla. Stat. §553.899, created by SB 4-D and effective 26 May 2022, following the partial collapse of a residential condominium building in Surfside in June 2021.
Four documents are routinely confused with it. It is not a reserve study, which is a financial planning exercise. It is not a facade inspection, which covers the exterior wall rather than the primary structure. It is not a home inspection, a generalist visual survey commissioned by a buyer. And it is not a code-compliance review: existing buildings are not required to meet current code.
Nor does it price, fund or warrant anything. It produces a report about structural condition on a date, and the obligations that follow attach to the association.
Which buildings are covered
The requirement applies to residential buildings that are three habitable stories or more in height as determined by the Florida Building Code, and that are subject to condominium ownership under Chapter 718 or cooperative ownership under Chapter 719.
The word habitable is doing real work, and it is new. HB 913, effective 1 July 2025, changed the test throughout the statute from "three or more stories" to "three or more habitable stories". This is a genuine narrowing: parking podiums, storage levels and utility floors may not count toward the three-story test where they are not designed for living, sleeping, eating or cooking. It also means a building that was captured before 1 July 2025 might not be captured now.
That determination is not one an owner or a board should make informally. Whether a given level counts as a habitable story under the Florida Building Code is a question for a design professional, and the answer decides whether the whole regime applies.
Two exclusions sit alongside it. Single-family through four-family dwellings with three or fewer habitable stories above ground are excluded — the four-family exclusion was added by HB 1021, effective 1 July 2024. And portions of a building maintained by a party other than the association fall outside it.
The 30-year rule, and the coastal trigger that no longer exists
A building must undergo a milestone inspection by 31 December of the year in which it reaches 30 years of age, measured from the date its certificate of occupancy was issued, and every 10 years thereafter.
The most commonly mis-stated point in the entire subject is what happens near the coast. Under SB 4-D (2022), a building within three miles of a coastline was on a 25-year first-inspection clock and everything else was on a 30-year clock. SB 154, signed and effective 9 June 2023, deleted that blanket three-mile rule. The statewide trigger became 30 years, with a local enforcement agency permitted to determine that local circumstances — such as proximity to salt water — warrant inspection at 25 years instead.
Since June 2023 there is no statewide coastal rule. Whether a coastal building is on a 25-year or a 30-year clock depends entirely on whether its local building department has adopted the 25-year determination. Any page still telling a reader "25 years if you are within three miles of the coast" is more than three years out of date, and the correct instruction is to ask the local enforcement agency.
Two transition deadlines applied to buildings already old when the regime started: one that reached 30 years before 1 July 2022 had until 31 December 2024; one that reached 30 years between 1 July 2022 and 31 December 2024 had until 31 December 2025. Both have now passed.
The statute does allow a good-cause extension. A local enforcement agency may extend the date by which an initial inspection must be completed where the owners have contracted with an architect or engineer and the inspection cannot reasonably be completed before the deadline. No maximum extension length is specified, which means the outcome depends on the local agency rather than on a rule a buyer can look up.
Phase one: what it does and does not reach
Phase one is a visual examination of habitable and non-habitable areas of the building, including the major structural components, producing a qualitative assessment of structural conditions. It must be completed within 180 days of the association receiving the local enforcement agency's written notice, and if the inspector finds no substantial structural deterioration, phase two is not required.
It is non-destructive. The engineer or architect looks. They do not open walls, take cores or perform testing. This is deliberate: phase one is a screening instrument designed to be performed across an entire building stock at a cost that makes universal compliance achievable. It follows that a phase one report finding nothing is not a certificate that nothing is wrong. It is a statement that nothing visible warranted escalation.
Its target is the primary structure: foundations where observable; columns, bearing walls and shear walls; slabs, beams and joists; balconies, walkways, stairs and other cantilevered elements and their connections back to the building; the roof structure and evidence of water reaching it; parking structures and ramps; seawalls and retaining walls where they support or protect the building; evidence of prior repairs; and evidence of movement. The envelope is examined not as a facade inspection but because water intrusion is the mechanism that destroys structure.
What the professional is really doing is separating symptoms of ordinary building behaviour from symptoms of structural deterioration. Concrete cracks. Buildings move. Finishes separate. The judgement is whether an observation is normal service behaviour or the visible manifestation of something underneath.
Phase two: open-ended by design
A phase two inspection is required only if substantial structural deterioration is identified during phase one. It may involve destructive or non-destructive testing at the inspector's direction, and may be as extensive or as limited as necessary to fully assess areas of structural distress. A progress report is due within 180 days of submitting the phase one report.
That open-endedness is deliberate, because what needs to be done depends on what was found. In practice a phase two draws on a standard toolkit. Non-destructive methods include sounding — hammer on vertical surfaces, chain drag across decks — to map delamination, which is invisible from the surface and normally covers a far larger area than visible spalling; cover meter survey to establish reinforcement layout and depth of cover; half-cell corrosion potential survey to ASTM C876; ground-penetrating radar and impact-echo for member thickness, embedded post-tensioning and voids; infrared thermography for moisture mapping; and monitoring of crack width, deflection and settlement to establish whether movement is active or historic.
Invasive work follows where those results direct it: selective removals to expose reinforcement and measure remaining section, coring for petrographic examination to ASTM C856, chloride profiling at incremental depths, carbonation depth testing, and exploratory openings in walls, roofs and waterproofing assemblies. The final step is structural evaluation of residual capacity against demand, which converts materials observations into a structural conclusion.
One consequence deserves stating plainly: because the engineer scopes phase two, its cost is unbounded at the outset. The right response is not to constrain the investigation but to stage it — investigate enough to characterise the problem, then decide.
There is no pass and no fail
The most consequential sentence in the whole scheme is the statutory definition of substantial structural deterioration. Fla. Stat. §553.899 defines it as substantial structural distress or weakness that negatively affects a building's general structural condition and integrity, and then adds:
"The term does not include surface imperfections such as cracks, distortion, sagging, deflections, misalignment, signs of leakage, or peeling of finishes unless the licensed engineer or architect performing the phase one or phase two inspection determines that such surface imperfections are a sign of substantial structural deterioration."
- A crack is not automatically a finding. Neither is a sag, a deflection, a stain or peeling paint. The statutory default is that these are surface imperfections.
- But the professional can decide otherwise. The determination turns on judgement: whether the observed condition is a sign of substantial deterioration.
- Two engineers can therefore reach different conclusions on the same building, and both can be defensible. That is inherent in a judgement-based standard, not a defect in the process.
Which is why "the building failed its milestone inspection" is not a thing that can happen. There is no pass and no fail. There is a report, which either identifies substantial structural deterioration or does not, and which either way may contain recommendations.
The report must identify any substantial structural deterioration so far as reasonably possible, describe its extent, recommend repairs, state whether unsafe conditions were observed, recommend preventive repairs for items damaged but not yet substantially deteriorated, and identify items requiring further inspection. That last category is under-discussed: it means the professional could not reach a conclusion. Those items are neither findings nor clearances — they are open questions, and exactly what a buyer should ask about.
The most common useful outcome, incidentally, is not a finding at all. It is a report with no substantial structural deterioration but a list of preventive repairs — failing waterproofing, deteriorating sealants, corroding railings, ponding, early spalling. For a competent board that list is a gift.
What follows the report
The statute builds a chain of deadlines around the inspection, and each one produces a document a buyer can ask for.
- The local enforcement agency gives the association written notice of the required inspection by certified mail.
- The association must notify unit owners within 14 days of receiving that notice.
- The association must distribute the inspection report summary to unit owners within 45 days of receiving the report.
- Boards of county commissioners must adopt an ordinance requiring an association to commence necessary repairs within 365 days after receiving a phase two report identifying substantial structural deterioration — a county-ordinance mandate added by HB 913 in 2025.
Where unsafe conditions are observed, matters move faster than any of these deadlines. Interim protective measures — shoring, netting, barricades, closure of a garage or of areas of the building, in extreme cases evacuation — start before any repair is designed, and they persist through design, permitting, bidding and construction.
For a buyer, the document set is the phase one report, any phase two report, the engineer's repair recommendations, the board minutes discussing them, the contracts and schedule for any work, the reserve study and funding plan, and the record of any assessments levied or contemplated. A phase one report on its own, without the board's response to it, is half the story. The statute is public at flsenate.gov.
Common questions
Which Florida condos need a milestone inspection?
Residential buildings three habitable stories or more in height as determined by the Florida Building Code, subject to condominium ownership under Chapter 718 or cooperative ownership under Chapter 719. Single-family through four-family dwellings with three or fewer habitable stories above ground are excluded, as are portions of a building maintained by a party other than the association. The word habitable was added by HB 913 effective 1 July 2025, and whether a given level counts is a determination for a design professional.
Is the milestone trigger 25 years or 30 years?
Thirty years statewide, measured from the date the certificate of occupancy was issued, and every 10 years thereafter. The rule requiring inspection at 25 years for buildings within three miles of a coastline was created by SB 4-D in 2022 and deleted by SB 154, signed and effective 9 June 2023. A local enforcement agency may still determine that local circumstances such as proximity to salt water warrant 25 years, so the answer for a specific building comes from the local building department.
What happens if a building fails its milestone inspection?
There is no pass or fail. The phase one report either identifies substantial structural deterioration or it does not. If it does, a phase two inspection is required and a progress report is due within 180 days of the phase one report, and county ordinances must require repairs to commence within 365 days of a phase two report identifying deterioration. If it does not, the association files the report — though the report may still recommend preventive repairs, which is the most common useful outcome.
Does a crack mean my building has a structural problem?
Not by itself. The statute expressly excludes surface imperfections such as cracks, distortion, sagging, deflections, misalignment, signs of leakage and peeling of finishes from the definition of substantial structural deterioration — unless the licensed engineer or architect determines they are a sign of it. Concrete cracks and buildings move as a matter of ordinary behaviour. The professional's job is to distinguish normal service behaviour from the visible manifestation of something underneath.
What is the difference between a milestone inspection and a SIRS?
A milestone inspection determines structural condition; a Structural Integrity Reserve Study determines what should be funded. The milestone inspection is performed by a licensed engineer or architect and its second phase can involve destructive testing. The structural study is based on a visual inspection by statute and does not open, sound or core anything. They are complementary by design, and a milestone inspection completed within the past five years that satisfies the study's requirements may substitute for its visual inspection.
Can a milestone inspection deadline be extended?
Yes, on a showing of good cause. A local enforcement agency may extend the date by which an initial milestone inspection must be completed where the owners have entered into a contract with an architect or engineer and the inspection cannot reasonably be completed before the deadline. The statute specifies no maximum extension length, so the practical answer for any particular building comes from the local enforcement agency rather than from the statute.