The extra charge on a condo (special assessment): the bill that shows up after you buy

It is the most expensive surprise a condo buyer runs into in Miami: not in the price, not in the monthly fee, and it lands once the place is yours.

It is an extra charge the building's association splits among all owners when something has to be paid for that reserves (the money the building keeps saved for repairs) do not cover: the roof, the facades, the garage, the plumbing. It is not the monthly fee. It is separate, and it can run from a few thousand to tens of thousands per unit.

And here is the part people miss: it is paid by whoever owns the unit when the charge comes due, not by whoever lived there while the building aged. Buy in March, approved in June, it is yours. And if it was approved before you bought and went unpaid, that is yours too: Florida law makes you responsible together with the previous owner (the association can collect the whole amount from either of you) for whatever came due until the property passed into your name (the transfer of title).

The board (the group of owners that runs the association) approves the charge, not an individual owner or the manager on their own. It is split by each unit's share, in one payment or in installments, as the association's documents allow. When it is not an emergency, the meeting where it will be discussed requires notice to the owners at least 14 days ahead (Florida Statutes, §718.112). An approved charge is a debt of the unit, not of whoever voted for it. How it is split between seller and buyer is set in your contract, so ask about approved or pending charges before signing, and ask in writing.

After the Surfside collapse in 2021, Florida changed the rules, and they are two distinct obligations worth telling apart. The first is the mandatory structural inspection (milestone inspection), which depends on the building's age: it happens at 30 years (in Miami-Dade, at 25 for a condo or co-op of three stories or more within three miles of the coast). The second is the study of the major repairs the building needs (SIRS), formally the structural integrity reserve study. It does not wait for the building to age: it applies from the start to any condo with three habitable stories or more, and its first deadline has already passed, December 31, 2025. A three-story building without that study today is not "not due yet": it is overdue. On top of that, the law requires keeping reserves funded, meaning real money set aside for whatever repairs that study calls for. Before that, many associations voted year after year not to set the money aside and pushed the problem forward. Since 2025 the rule is no longer absolute: an association that completed the milestone inspection within the previous two calendar years can vote to pause or reduce reserve contributions for up to two consecutive budgets, and that applies to budgets adopted through December 31, 2028.

The result is that a lot of Miami-Dade buildings are catching up all at once. That is the adjustment being paid right now, and it is why you see condos that look impossibly cheap and are not.

The SIRS (Structural Integrity Reserve Study) is the study that puts a price on the building's big repairs. It is not the inspection: the structural inspection looks at the building, while the SIRS starts from a visual review of its parts and produces the plan for how much money to set aside each year. It repeats at least every 10 years. At a minimum it covers, according to the DBPR (the Florida agency that oversees condominiums):

• The roof.
• The structure, including the walls that carry the load.
• Fire protection.
• Plumbing and electrical systems.
• Waterproofing and exterior painting.
• Windows and exterior doors.
• Any other item whose replacement or deferred maintenance costs more than $25,000 and whose failure would affect the ones above.

For each item, the study says how long it lasts, what it would cost to replace, and how much to set aside each year. The law does not require the fund to be full the day the study is done: it requires a schedule that keeps it from dropping below zero before each replacement. And in budgets adopted from December 31, 2024 on, owners cannot vote for zero reserves or less than the study calls for on those items, or spend that money on something else (apart from the limited pauses covered above).

Buildings under three habitable stories, and one-to-four-family homes of up to three stories, are outside the SIRS. Being outside it does not mean there are no reserves or extra charges: only that this specific obligation does not apply.

None of this is secret. Part of it the law requires the seller to hand over and pay for; the rest the association keeps and you ask for:

• Association minutes from the last two years. The minutes are the written record of each meeting. That is where the work gets discussed long before it is approved. If they have spent a year talking about the roof, the roof will be paid for.
• The state of the reserves. How much there is and what it is earmarked for. Low reserves in an older building is a pending bill, not a coincidence.
• Two reports, and they are not the same paper. The state milestone inspection says what has to be repaired. If it finds serious damage to the structure, the work must begin within 365 days at the latest, and the seller hands you the inspector's summary of it. The reserve study says how much money has to be set aside. If the association has not done one, the seller must hand you a statement saying so, and that statement is an answer too.
• Extra charges already approved or up for a vote. If one exists, you need to know whether the seller pays it in full at closing (the day you sign the purchase) or passes it to you.

Two more papers complete the picture: the approved annual budget, with its reserve line, and the current SIRS with its savings plan. By law, the reports and studies are official records that must be handed to anyone who wants to buy. If nobody can show you the document, treat it as pending, not as done.

Beyond the paperwork, look at the building. Rust on railings and balconies, cracks that follow a line, damp patches repeating at the same spot across floors, fresh paint on one face only. None of those proves anything alone. Several together say plenty.

An extra charge does not only change what you pay: it can change whether you get approved. The lender looks at the share of your monthly income that goes to paying debts (your DTI), with the building's monthly fee included, and some programs will not lend at all in buildings with unresolved structural issues.

Which is why this is worth knowing before you fall for the unit, not after the inspection.