HOA Special Assessments: Why They Happen and How Boards Plan Ahead

A special assessment notice can look sudden to owners. For boards, it’s often the result of years of budget choices. Florida’s condo law defines one as “any assessment levied against a unit owner other than the assessment required by a budget adopted annually.”

California’s real estate regulator warns that they “can run into the tens of thousands of dollars.”

Why special assessments happen

Common causes include:

• Underfunded reserves. Contributions stayed low to keep dues down, and a big project arrived anyway.
• A cost higher than planned, or a project that came early. The explanation of the national standards warns about projects that “occur earlier or are more expensive than predicted.”
• No current plan. The association had no study, or an old one with old prices.
• A loss or an uninsured cost. Damage or a deductible landed outside the budget. Insurance may help in some of these cases, so ask your agent.

A simple example

Take a fictional community of 64 units with a $600,000 roof project coming up. If reserves are $200,000 short that year, covering the gap with an assessment means about $3,125 per unit, due in one year.

Now suppose the board sees that gap 10 years early. Before interest and inflation, saving an extra $20,000 a year comes to about $26 per unit per month. That’s the same gap, spread over 10 years instead of one.

That example leaves out inflation, interest and every other project. A real plan needs them.

What the options can cost

One study firm’s April 2026 report compares three ways to pay for a $250,000 roof: $231,823 through budgeted reserve funding, $250,000 through a special assessment, and $320,071 through a bank loan. The firm sells studies, and the page doesn’t show its loan assumptions, so treat that as one illustration.

Boards can weigh some mix of these:

Can the board do it without a vote?

It depends on where you are. State law, and often your governing documents, can limit how much the board may assess without an owner vote.

In California, for example, Civil Code 5605 generally requires member approval for special assessments above 5% of budgeted gross expenses for the year, with an exception for certain emergencies. Other states work very differently, so ask your manager or attorney before choosing.

How to make one less likely

1. Know your runway. Work out the year your reserves would fall below $0 at today’s savings. Our calculator gives a rough estimate.
2. Get or update a reserve study. A study puts every major component and its cost on one schedule.
3. Raise contributions early. Small increases over many years ask less of owners than one large catch-up.
4. Keep the plan current. Prices and conditions change, so old numbers can mislead. See full study or update.
5. Explain the numbers to owners. In a 2026 survey by the Foundation for Community Association Research, 69% of residents supported investing in reserves each year.

We found no reliable national figure for how often special assessments happen, so be wary of guides that quote one.

If you’re an owner

Ask the board for the current reserve balance, the latest reserve study and the funding plan. If you’re buying, ask for them before closing, and ask about any planned or discussed assessments. An attorney can tell you what the association has to disclose where you live.