Florida Milestone Inspection Trigger & Cost Calculator

How this calculator works

Florida's milestone inspection regime, established by SB 4-D (2022) and refined by SB 154 (2023) and HB 1021 (2024), is the building-side companion to the SIRS regime. SIRS plans the reserves; the milestone inspects the structure. The two are independently mandated; the typical Florida condominium subject to one is subject to the other.

F.S. § 553.899 establishes the milestone-inspection requirement:

• Three or more habitable stories. Buildings below this threshold are not subject to the regime.
• First-inspection trigger. 25 years after the Certificate of Occupancy for buildings within 3 miles of the Gulf or Atlantic saltwater coastline; 30 years for all other buildings.
• Recurrence. Every 10 years after the first inspection.
• Performed by a licensed engineer or architect. A Florida P.E. or R.A. in active good standing.

The calculator returns:

1. The trigger year for the next inspection — based on CO year, coastal proximity, and whether a milestone has already been completed.
2. The status — overdue, due-this-year, or future, with a count of years.
3. Phase 1 cost estimate range — low / mid / high, scaled by stories and gross building area.
4. Phase 2 risk-adjusted estimate — only when Phase 2 is flagged as likely (visible deterioration, prior-repair history, or engineer's preliminary indication).
5. Per-unit cost share — total cost divided by unit count, for board planning.

The cost model is operator-grade industry-benchmarked from Florida engineering firms specializing in milestone work, 2024–2026. Phase 1 ranges from roughly $5,000 for a small, well-documented 3-story building to $50,000+ for large coastal high-rises. Phase 2 typically runs 3–6x Phase 1 depending on testing scope.

The two-phase structure

Phase 1 — visual inspection. A licensed engineer or architect performs a thorough visual assessment of the structural systems: roof, exterior walls, balconies, foundations, primary structural members, fireproofing, and life-safety systems. The inspector files a Phase 1 report with the local Building Department. If no substantial structural deterioration is found, the inspection cycle is complete — the next milestone is 10 years out.

Phase 2 — destructive / non-destructive testing. If the Phase 1 visual indicates substantial structural deterioration, Phase 2 is required. The scope of Phase 2 is engineer-determined and typically involves:

• Concrete core sampling for chloride-ion penetration testing
• Petrographic analysis of structural concrete
• Reinforcement cover-meter mapping and pachometer surveys
• Half-cell potential testing for corrosion in embedded reinforcement
• Targeted destructive openings (saw-cut sections, removed cladding)
• Load-testing where structural capacity is in question

Phase 2 produces a remediation specification: the licensed engineer specifies the repair scope required to restore structural integrity. HB 1021 (2024) requires the association to begin those repairs within 365 days of the Phase 2 report.

A worked example

A 1990-construction, 6-story, 50-unit Florida oceanfront condominium (60,000 sq ft GBA, coastal):

• CO year + 25-year coastal trigger = 2015 trigger year.
• Current year 2026 → 11 years overdue.
• Phase 1 estimate (mid): roughly $23,500 (range $14,500–$33,500).
• Phase 2 likely (visible deterioration on the salt-air-exposed coastal side): Phase 2 mid-estimate $105,750.
• Total mid-estimate: $129,250. Per unit: $2,585.

If the board funds Phase 1 only, the engineer's report determines whether Phase 2 is needed. If Phase 2 is required, the budget step-change is dramatic — and the post-Phase-2 repair scope can dwarf both. A special-assessment plan covering both phases plus a Phase 2 repair scope is the conservative posture for an overdue coastal building. Pair this calculator with the SIRS calculator to size the reserve impact and the Special Assessment Calculator to size the per-unit collection if needed.

What the calculator does not do

This calculator is a planning estimator. It does not:

• Substitute for an engineer's actual quote. Final cost depends on the specific engineering firm engaged, the building's documented condition, and the regional Florida market. The numbers above are mid-market reference points — accept ranges, not point estimates.
• Determine coastal status definitively. The "within 3 miles of saltwater coast" language is interpreted by local building officials with varying strictness. When in doubt, treat as coastal — the cost of an unnecessary early inspection is much smaller than the cost of an inspection 5 years overdue.
• Estimate the repair scope from Phase 2. Repair-scope estimates require the engineer's specific findings. A Phase 2 report can identify anything from $50,000 in localized waterproofing to several million in structural-concrete remediation — there is no general formula. Once Phase 2 lands, build a repair budget from that report and pair it with the SIRS funding model.
• Apply to HOAs under Chapter 720. Single-family-home HOAs, townhouse HOAs, and other Chapter 720 associations are not subject to the milestone regime — only condos and cooperatives under Chapters 718 / 719. Some townhouse structures of 3+ habitable stories may be individually subject depending on platting.
• Handle mixed-use buildings precisely. The milestone regime applies to the building, not to specific units. For mixed-use buildings (residential condo over commercial), the entire building is subject if the building meets the threshold. The cost allocation between residential and commercial owners follows the governing-document declaration.

How this page is maintained

The 25 / 30 / 10 year trigger structure has been stable since SB 4-D (2022). HB 1021 (2024) added the 365-day repair-initiation window and clarified the engineer-credentialing requirements but did not change the trigger logic. The cost-estimation model is benchmarked against Florida engineering firms and is refreshed at least annually as the market moves with construction-cost indexes and post-Surfside demand for milestone-qualified engineers.

Last reviewed: 2026-05-14 against F.S. § 553.899; SB 4-D (2022); SB 154 (2023); HB 1021 (2024).