A special assessment is a one-time charge a condominium board levies on owners, on top of monthly common expenses, when the money on hand is not enough — most often for major repairs the reserve fund cannot cover. It is the scenario condo buyers worry about most, so it is worth being precise about how common these actually are, and how big.
The honest numbers
The Condominium Authority of Ontario publishes sector data on special assessments. Two figures anchor the picture:
- Roughly 16% of Ontario condominium corporations issued a special assessment at some point across 2018–2023 — about one in six corporations, over a six-year span.
- In 2023, the average special assessment was $3,525 per voting unit.
Two clarifications keep those numbers honest. First, that 16% is a corporation-level figure over six years. It is not the probability that any particular purchase will be followed by an assessment, and it cannot be read that way — buildings differ enormously, and the certificate for a specific building tells you far more than a sector average does. Second, the average sits in the low thousands; the frightening cases are the tail, not the middle.
The tail is real, though
The tail deserves respect. Documented larger assessments in Ontario run into the tens of thousands of dollars per unit. In one widely reported Toronto case from 2022, owners in a roughly 50-year-old building were given 15 days to arrange payment of a special assessment of $30,000 to $42,500 per unit, after an engineering report identified more than $14 million of repairs needed within a year. The reserve fund at the time held $1.75. Owners who could not pay faced a lien against their unit under the Condominium Act.
That case is an outlier — that is precisely why it made the news. But it illustrates the mechanism: deferred repairs plus an empty reserve fund eventually become a bill with a deadline, and the bill lands on whoever owns the unit that day.
Where the certificate hints at one
A special assessment rarely comes from nowhere. The status certificate contains several paragraphs where the conditions for one — or an actual one — are disclosed:
- Paragraph 11 discloses any assessment already levied since the budget date, with the amount and purpose. A recent assessment is the strongest possible signal to ask about, including whether more phases are expected.
- Paragraph 12 requires the corporation to disclose circumstances it knows of that may increase common expenses, including an anticipated assessment. This is where "the board is discussing a garage repair levy" is supposed to appear.
- Paragraph 14 describes the reserve fund study — or states that none was done. An old, missing, or overdue study means the building's future repair costs are less well mapped.
- Paragraph 15 contains the board's statement on whether the reserve fund will be adequate, alongside the balance, contributions, and anticipated spending.
- Paragraph 16 summarizes the reserve funding plan and whether it has been implemented. A plan that was never implemented is a disclosure worth underlining.
None of these paragraphs predicts anything. What they do is put the corporation's own knowledge on the record — and Ontario law generally prevents a corporation from later claiming against a buyer for amounts it failed to disclose in the certificate. The flip side, and it matters: a corporation can still levy a new special assessment after closing for needs that had not crystallized at certificate date. A clean certificate is a snapshot, not a warranty about the future.
Reading this as a buyer
The calm takeaway: most Ontario buyers are not hit with a special assessment, and when assessments happen, the average is closer to a used car than a down payment. The careful takeaway: the size of the tail is exactly why the disclosure paragraphs above exist, and why anything filled in there is worth converting into direct questions for your own lawyer — what was this assessment for, is the underlying work finished, and does the reserve picture suggest the story is over or ongoing.