In 2024, 38% of Canadian homebuyers entered a bidding war, up from 24% in 2019 according to CMHC data. That jump means nearly two in five buyers are now competing directly for the same property, and the financial consequences go far beyond the final sale price.
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This article is general information only and does not constitute professional advice. For your specific situation, consult a qualified professional.
Bidding wars don’t just push up the price you pay. They change the terms of the deal, the risks you carry, and the costs that follow long after the keys are handed over. Whether you’re looking in the GTA or a smaller market, the mechanics are similar — but the outcomes depend heavily on how prepared you are before the offer night. Here’s what you actually need to know.
What Winning a Bidding War Actually Costs
The central concept here is the competitive market analysis (CMA) — a broker’s estimate of a property’s fair market value based on recent comparable sales within 500 metres and the last 90 days. Without a solid CMA, you’re bidding blind.
What I tend to notice is that buyers who skip the CMA step end up paying the most. A few hours of research before you bid can save you tens of thousands.
The Full Cost Picture: What a Bidding War Does to Your Budget
The purchase price is only the beginning. A bidding war changes the entire cost structure of a home purchase, and most buyers only focus on the number at the top of the offer.
When you win a bidding war, you typically pay 5–12% above the CMA estimate. On a $700,000 home, that’s an extra $35,000 to $84,000. But that’s not the only cost. You also face a larger deposit — often $50,000 to $100,000 — which ties up cash you might need for closing costs. And if you waived the inspection condition, you’re now responsible for any issues the home inspector would have found. Doubling your repair budget after a condition-free win is a common outcome.
Closing costs add another 1.5–4% of the purchase price. On a $750,000 home, that’s $11,250 to $30,000 in legal fees, land transfer taxes, and other charges. And if you’re buying in Ontario, the land transfer tax alone can be substantial — especially in Toronto, which charges a municipal tax on top of the provincial one.
Here’s a breakdown of how a typical bidding war scenario compares to a straightforward purchase:
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| Cost Category | Straight Purchase | Bidding War Win |
|---|---|---|
| Purchase price (vs CMA) | At or near CMA | 5–12% above CMA |
| Deposit | 3–5% of price | $50k–$100k (often 10%+) |
| Inspection cost risk | Known before purchase | Unknown — budget double |
| Closing costs | 1.5–4% of price | 1.5–4% of higher price |
| Financing condition | Standard | Often waived |
What this means in practice: a home that looks affordable at $700,000 can easily cost $800,000 or more once you factor in the premium, deposit, and waived protections. My first move would be to calculate your all-in number before you even look at listings.
Common Mistakes Buyers Make in Bidding Wars
Emotional Overpayment Without a Ceiling
The most expensive mistake is walking into offer night without a firm walk-away price. Winning bids typically land 5–12% above a rational CMA estimate, and that gap is pure emotion. Set your ceiling based on comparable sales plus a willing premium — and stick to it. If the bidding goes past that number, let it go. Losing a bidding war often means the property was above your reasonable range anyway.
Waiving All Conditions to Win
Waiving the inspection and financing conditions is the fastest way to win a bidding war, but it’s also the fastest way to lose money. Without an inspection, you’re buying every hidden problem — from a leaky roof to faulty wiring. Without a financing condition, you risk defaulting if your lender pulls out, which can lead to seller’s damages claims. A pre-offer home inspection, done before you bid, lets you waive the condition safely. Budget for it — it’s a few hundred dollars that can save you thousands.
Falling for the Underpricing Trap
Some sellers list at 60–80% of true market value to create a feeding frenzy. Buyers see a $500,000 list price and think they’re getting a deal, only to bid $100,000 over and still overpay. Always benchmark against recent comparable sales within 500 metres and the last 90 days. The list price is a marketing tool, not a valuation.
Ignoring the Post-Win Costs
The costs don’t stop at closing. If you waived the inspection, you’ll need to budget for repairs that could easily double what you expected. Neighbour noise, strata issues, or other surprises can surface after you move in. And if you stretched your budget to win, you may have less room for these unexpected expenses. A good rule: after a condition-free win, set aside at least 5% of the purchase price for post-closing surprises.
How to Navigate a Bidding War Without Overpaying
Do Your Homework Before You Bid
Start with a mortgage pre-approval so you know your maximum borrowing power. Then review comparable sales from the last 90 days within 500 metres of the property. Visit the home multiple times — once during the day, once in the evening, and once on a weekend. Look for noise, traffic, and neighbour issues. If you’re considering a bully offer, make sure you’ve done full diligence first — it’s only suitable when the property is a rare fit you won’t see again for years.
Set Your Walk-Away Price and Stick to It
Your walk-away price should be based on the CMA plus a premium you’re comfortable with — not the list price and not the auction energy. Use odd numbers like $703,000 instead of $700,000 to differentiate your offer. And remember: if the bidding goes past your ceiling, you’ve already won by not overpaying. A lost bidding war is valuable data — it tells you the property was above your reasonable range.
Understand the Bidding Format
Most Canadian bidding wars use blind bidding — you submit your best offer without seeing competing bids. But under TRESA (effective 2023 in Ontario), sellers can choose open bidding, where they share competing offer details. Ask your agent early whether the seller plans open or confidential bidding. Open bidding gives you price transparency and can help you avoid overpaying. If it’s blind, your strategy shifts to offering your best price upfront rather than trying to edge out competitors by small amounts.
Structure Your Offer to Win Without Overpaying
A strong offer includes clean terms: a substantial deposit ($50,000–$100,000), a flexible closing date that matches the seller’s timeline, and a short irrevocable window (24–48 hours). If you can do a pre-offer home inspection, you can safely waive the inspection condition. If you need a financing condition, keep it short — 5 business days or less. The goal is to make your offer attractive without taking on unnecessary risk.
What to Do After You Win (or Lose)
If you win, confirm your financing within 24 hours, arrange any needed inspections, hire a lawyer, and review the status certificate if it’s a condo. Budget for closing costs of 1.5–4% of the purchase price. If you lose, ask your agent for feedback on the final price and the winning offer structure. That information helps you calibrate your next bid. And remember: losing often means the property was above your reasonable range — the next one may be a better fit.
Frequently Asked Questions About Bidding Wars
What is a bully offer and when should I use one? ▾
Are bidding wars still common in 2026? ▾
What’s the difference between blind and open bidding? ▾
Can I use an escalation clause in Canada? ▾
What should I do after losing a bidding war? ▾
How much should I budget for closing costs after a bidding war win? ▾
Your Best Move in a Bidding War Is Knowing When to Walk Away
The single most important thing you can do in a bidding war is set a walk-away price based on comparable sales and stick to it. Every dollar above your ceiling is money you won’t get back at resale. The market will always have another property — but overpaying on this one follows you for years.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read Is Now the Worst or Best Time to Buy a House in Canada’s Unpredictable Market?.
Sources and Further Reading
Will Canada Ever See Affordable Housing Again or Is It a Permanent Crisis? — Explores the broader affordability trends that shape bidding war dynamics across Canadian markets.
How the Remote Work Boom Is Driving Real Estate Prices in Unexpected Areas — Looks at how shifting demand patterns create bidding war conditions in previously quiet regions.
Arthur Zhao (2026). Bidding Wars Pros and Cons. 🔗
Arthur Zhao (2026). Should I Compete in a Bidding War? 🔗
WealthNorth (2026). How Bidding Wars Work in Canada. 🔗
Zolo (2024). Bidding War Strategies. 🔗
