Verified November 11, 2026 by Local Toronto Editorial
Short answer: A condo special assessment is a one-time charge on top of your monthly condo fees, used when the corporation needs money its budget or reserve fund does not cover. In Ontario, the Condominium Authority of Ontario (CAO) says the board can levy one without owner approval, and each owner pays in the same percentage used for their common expenses. If you do not pay, the corporation gets a lien on your unit. Before you buy, look for warning signs in the status certificate, the reserve fund study, the funding plan notice and recent board minutes.
What a special assessment is
Every condo owner in Ontario pays monthly common expense fees. Part of that money runs the building day to day, and part goes into the reserve fund for major repairs and replacements. A special assessment sits outside that routine. The CAO describes it as “an extra one-time charge added to the owners’ common expenses fees” that corporations may use to cover shortfalls in their yearly budgets.
In practice, it is a bill. The board decides the corporation needs a set amount of money, divides it among the units, and tells owners how much they owe and when. Some boards ask for a lump sum. Others spread the charge over several months. How it is collected depends on the board’s decision and the corporation’s governing documents, so the payment terms vary from building to building.
Special assessments are not the same as a fee increase. A fee increase raises what you pay every month going forward. A special assessment is a separate, one-time amount, even if it is paid in instalments.
Why condos levy them
The CAO says corporations generally rely on special assessments to cover single events, and it lists unforeseen expenses, under-budgeting and litigation as typical causes. In GTA buildings, the situations that tend to lead to one include:
- A reserve fund that is short of its plan. If past boards kept fees low and contributed less than the reserve fund study recommended, the money may not be there when a roof, garage membrane, window system or elevator needs replacing. The CAO does not say a shortfall automatically leads to an assessment, but it is one of the ways a board can close the gap, along with higher monthly fees or borrowing.
- Repairs that cost more than expected. Construction prices and the condition found once work starts can push a project over its estimate.
- Uninsured losses and deductibles. Damage that falls under the corporation’s insurance deductible, or is not covered at all, has to be paid from somewhere.
- Legal costs. Lawsuits by or against the corporation can run over budget. The CAO names litigation as a common reason.
- An operating deficit. A year where utilities, insurance or other costs ran well above the budget.
Older buildings are not the only ones at risk. A newer building can face an assessment if its early fees were set low or if construction defects are not fully covered by warranty or a builder settlement.
The rules: votes, shares and liens
| Question | Answer | Source |
|---|---|---|
| Do owners have to vote on it? | No. “Condo boards can charge a special assessment through common expense fees without getting permission from owners.” The corporation’s declaration, by-laws or rules may contain provisions on special assessments that it must follow. | CAO, Special assessments |
| How is my share set? | Your portion is “calculated using the same percentage used to calculate common expenses fees.” That percentage is in the declaration. | CAO, Special assessments |
| Do I have to pay? | Yes. The CAO says owners must pay their portion of any special assessment. | CAO, Special assessments |
| What if I do not pay? | “Not paying will lead to the corporation having a lien against your condo unit.” The lien covers the unpaid amount, interest and reasonable legal costs. | CAO, Special assessments |
| How does the lien process run? | The corporation sends a Notice of Lien and the owner has 10 days to pay. A lien expires after three months unless a Certificate of Lien is registered. After registration, a Notice of Sale Under Lien can follow, then a 45-day redemption period, and the corporation can seek possession or sale. | CAO, Liens |
| Can I dispute it? | Some condo disputes go to the Condominium Authority Tribunal if they fall within its jurisdiction. Others go to the Superior Court of Justice. | CAO, Liens |
The lien point matters for anyone with a mortgage. A corporation’s lien for unpaid common expenses can end in a sale of the unit, which is why lenders pay attention to it. Our guide to power of sale homes in Ontario explains how forced sales work from a buyer’s side.
How much would you pay? Calculator
Because the share follows your common expense percentage, the maths is simple: total assessment times your percentage. The table shows example figures only. They are not typical GTA assessments.
| Total assessment for the building | Unit share 0.30% | Unit share 0.45% | Unit share 0.80% |
|---|---|---|---|
| $500,000 | $1,500 | $2,250 | $4,000 |
| $1,200,000 | $3,600 | $5,400 | $9,600 |
| $3,000,000 | $9,000 | $13,500 | $24,000 |
Worked example: a board levies $1,200,000 for a garage repair. A unit with a 0.45% share owes $1,200,000 times 0.0045, which is $5,400. If the board allows it to be paid over 12 months, that is $5,400 divided by 12, or $450 a month. Over 24 months it would be $225 a month. Whether instalments are allowed, and over how long, is up to the board, so check the notice you receive.
Estimate your share
Enter the total from the board’s notice and your unit’s percentage from the declaration. The starting values are example inputs only.
How to spot one before you buy
No document can promise a building will never levy a special assessment. But the warning signs usually show up in paperwork you can get before you firm up an offer.
1. The status certificate
The CAO lists what a status certificate contains. Three items speak directly to this risk: a statement of any increase in common expenses and the reason, a statement on the most recent reserve fund study and the state of the reserve fund, and a statement of any special assessments charged to the unit since the current year’s budget and the reason. The CAO also says certificates “must disclose potential fee increases in clear language.” Our status certificate guide walks through the full package.
Disclosure has teeth. The CAO points to a 2023 Ontario Superior Court of Justice decision (2023 ONSC 2995) in which a buyer was found not to owe their share of a special assessment because the corporation had not clearly disclosed in the status certificate that it might be levied. That does not mean every buyer is protected, but it shows why the wording of the certificate matters and why your lawyer should read it closely.
2. The reserve fund study and funding plan
According to the CAO, a corporation does a comprehensive study within the first year after registration, then updated studies at least every three years. The board reviews each study within 120 days, proposes a funding plan, and sends owners a notice of future funding within 15 days. That notice summarises the study and the plan and lists any differences between them. Where the board’s plan contributes less than the engineer recommended, the gap has to be made up later.
- Compare the reserve contribution in the current budget with the study’s recommendation for this year.
- Look at the next five to ten years of major work. Several large items close together, with a thin balance, is a red flag.
- Check the study’s date. A study well past the three-year cycle is a question to ask.
3. Board minutes
A special assessment the board is only discussing may not appear on the certificate yet. Minutes from the last 12 to 24 months often mention engineering reports, contractor quotes, insurance claims or legal advice before any decision is announced. Ask the seller or your agent whether minutes can be provided.
4. Other signs
- Fees well below similar buildings. Low fees can mean the reserve is underfunded. Our guide to condo fees explained covers what fees pay for.
- Ongoing litigation. The certificate must list it.
- High insurance deductibles. The CAO notes that owners are generally responsible for their own deductibles unless they or their guests cause damage, and that by-laws can widen what owners pay. Tell your insurance broker the figures.
- Visible work. Scaffolding, closed garage levels or temporary repairs during a showing are worth asking about.
Negotiating when an assessment is known
If a special assessment has already been levied or is clearly coming, it becomes part of the price discussion. Buyers and sellers commonly agree in the agreement of purchase and sale who pays any remaining instalments, or adjust the price. There is no single rule that suits every deal, so have your lawyer draft the clause. For cash planning on closing day, see how much cash you need to close.
If you already own: what to do
- Read the notice carefully. Check the total, your percentage, the due dates and whether instalments are offered.
- Check the math. Multiply the total by the percentage in your declaration. If your amount does not match, ask management to explain.
- Ask for the backup. The engineering report, contractor quotes, or legal advice behind the decision. Owners also have rights to many corporation records.
- Talk to the board early if paying is hard. Some boards agree to a payment schedule. Leaving it unpaid can lead to a lien, plus interest and legal costs added to your account.
- Check your unit insurance. Ask your broker whether your policy covers any part of an assessment linked to an insured loss or deductible.
- Think about the next study. One assessment can be followed by higher fees if the funding plan is also short. Our article on what to do when your condo fee goes up covers owner options.
This guide is general information, not legal, tax or financial advice. Have a real estate lawyer review the status certificate and any special assessment notice before you rely on it.
Looking at condos in the GTA? We can help you request the status certificate early and ask the right questions about the reserve fund. Start on our buy a home page, or get a free home evaluation if you are thinking of selling a condo.
Common questions
What is a condo special assessment in Ontario?
It is a one-time charge on top of your regular monthly condo fees. The Condominium Authority of Ontario describes it as an extra charge added to owners’ common expense fees, used to cover shortfalls such as unforeseen expenses, under-budgeting or litigation.
Do condo owners have to vote on a special assessment?
No. The Condominium Authority of Ontario says boards can charge a special assessment through common expense fees without getting permission from owners. The corporation’s governing documents may contain provisions it must follow.
How is my share of a special assessment calculated?
Your share uses the same percentage as your common expense fees, which is set in the declaration. For example, a unit with a 0.45% share of a $1,200,000 assessment owes $5,400.
What happens if I do not pay a special assessment?
The corporation gets a lien against your unit for the unpaid amount, interest and reasonable legal costs. A lien expires after three months unless the corporation registers a Certificate of Lien, and the process can end in a sale of the unit.
Will a status certificate show an upcoming special assessment?
It must show special assessments charged to the unit since the current budget and the reason, and the Condominium Authority of Ontario says potential fee increases must be disclosed in clear language. One the board is only discussing may not appear, so also review the reserve fund study, the notice of future funding and recent board minutes.
Who pays a special assessment when a condo is sold?
The Condominium Authority of Ontario says owners must pay their portion. When an assessment is known before closing, buyers and sellers commonly settle who pays any remaining instalments in the agreement of purchase and sale, so have your lawyer draft the clause.
Sources
- Condominium Authority of Ontario, Special assessments (modified April 23, 2026).
- Condominium Authority of Ontario, Liens (modified April 6, 2026).
- Condominium Authority of Ontario, Status certificates (modified August 12, 2026).
- Condominium Authority of Ontario, Reserve funds (modified June 19, 2026).
- Condominium Authority of Ontario, Repairs after damage (modified June 19, 2026), section on deductibles.
- Ontario Superior Court of Justice, 2023 ONSC 2995, as summarised by the Condominium Authority of Ontario.
- Government of Ontario, Condominium Act, 1998, S.O. 1998, c. 19.
Images: AI-generated illustrations created for this guide. They do not show real properties.
Local Toronto, HomeLife Landmark Realty Inc., Brokerage.