Since June 2021, nothing has reshaped how Miami condos are bought, sold and financed more than structural safety law. The partial collapse of Champlain Towers South in Surfside pushed Florida to pass Senate Bill 4D and follow-on reforms that put every older condominium building on a fixed schedule of structural inspection and reserve funding. If you are buying or selling a Miami condo, especially near the water, two terms now belong in your due-diligence vocabulary: the milestone inspection and the structural integrity reserve study, or SIRS. Here is what they require and how they change the math.
Why a collapse in Surfside rewrote the rulebook
For decades, Florida let condominium boards vote to waive or shrink the reserves meant to pay for a building's big-ticket repairs. It kept monthly dues low and deferred hard decisions. The Surfside tragedy exposed the cost of that deferral. In response, the Legislature passed Senate Bill 4D in 2022 and refined it the following year, creating two mandatory, recurring obligations for condominium and cooperative buildings that stand three stories or taller. One examines the structure itself; the other examines whether the association has set aside the money to maintain it. Together they end the era of quietly kicking structural maintenance down the road.
What a milestone inspection actually checks
A milestone inspection is a structural review performed by a licensed engineer or architect, and it arrives in two phases. Phase One is a visual assessment of the building's primary structural systems, the foundation, load-bearing walls, floors and roof, to judge whether substantial structural deterioration exists. If the inspector finds none, the process ends there. If they do find it, Phase Two follows: a deeper investigation, which can include testing, to define the damage and the repairs required. Buildings generally reach their first milestone inspection at thirty years of age, measured from the certificate of occupancy, and repeat it every ten years. Structures close to the coast can face an earlier timeline, and a local building official can order one sooner based on local conditions.
SIRS and the end of the waived reserve
The structural integrity reserve study is the financial companion to the milestone inspection. It is a study, required at least every ten years for the same three-story-and-taller buildings, that inventories the major structural and safety components a building must eventually repair or replace: the roof, load-bearing elements, floor, foundation, fireproofing, plumbing, electrical, waterproofing and exterior paint, and windows and exterior doors, along with any other component whose cost exceeds a statutory threshold. It then sets the reserve funding those items require. The pivotal change for buyers: associations covered by a SIRS can no longer vote to waive or underfund the reserves for those components. Decades of deliberately thin reserves now must be filled, which is precisely why so many older buildings have raised dues or levied special assessments.
Why the coastline feels this hardest
These rules apply statewide, but they land hardest along the water, and Miami has more coastline condo stock than almost anywhere. Salt air and humidity accelerate the corrosion of concrete and steel, so oceanfront buildings show wear sooner and carry heavier repair budgets. Surfside itself is a small, walkable beach town where older and newer buildings sit side by side. The South Beach Art Deco district is full of mid-century oceanfront and bayfront buildings now well past the thirty-year mark. Sunny Isles Beach and Bal Harbour mix aging towers with brand-new branded residences. In each, two buildings on the same block can carry very different reserve health, and that gap is now a real input into price.
The structural file every buyer should demand
Treat the milestone inspection report and the SIRS as core due-diligence documents, not paperwork to skim at closing. Florida law entitles a resale buyer to the association's records, so ask for the milestone Phase One report, the Phase Two report if one was triggered, the completed reserve study, the current reserve balances, recent board meeting minutes and any notice of a pending or approved special assessment. Read the minutes for repairs the board is debating but has not yet funded. Lenders and insurers now scrutinize the same things: financing guidelines tightened after Surfside, so a building with heavy deferred maintenance or an unfunded assessment can be hard to finance, and insurance premiums have climbed. A clean structural file protects both your safety and your future resale.
Selling an older oceanfront unit under the new rules
If you are selling, disclosure is no longer a detail; it is the deal. A buyer's agent will ask for the milestone results and reserve study early, and a building with a clean Phase One report and a funded SIRS is a genuine marketing asset that can defend your price. The harder case is a unit in a building facing a Phase Two repair or a large approved assessment. Concealing it is not an option under Florida disclosure rules, and it will surface in the association documents anyway. The realistic move is to price the known cost in, or to time your sale around the association's repair milestones, rather than let a surprise unravel the closing.
Pricing the risk without guessing a number
The one thing you should not do is assume a figure. Special assessments range from modest to life-changing depending on a building's age, size and how long its reserves were neglected, so any number quoted as a blanket Miami condo assessment is close to meaningless. For current medians, dues trends and how reserve-driven costs are shaping values across the beach and bayfront markets, see our live figures at /market-stats. Then narrow to the specific building: its milestone report, reserve study and assessment history are the only numbers that actually price your unit. When you are ready to compare buildings on structural health rather than gloss, that is the analysis worth doing before you make an offer.

Written by
Miami Condo HQ
Miami Condo Specialists
Miami Condo HQ is the complete Miami condo platform — a full profile for every condo building in Miami, for-sale and for-rent listings, in-depth building profiles and Miami market research, and honest, pressure-free guidance for buyers, sellers and investors across South Florida.



