When it comes to pricing your home for sale in Ontario, comparable sales — commonly called “comps” — are the most important piece of data you’ll work with. Understanding how comps work helps you evaluate your agent’s pricing recommendation, negotiate with confidence, and avoid the costly mistake of over- or under-pricing.
What Are Comparable Sales?
Comparable sales are recently sold properties in your area that share key characteristics with your home. The idea is straightforward: if three similar homes on your street sold for $1.1M, $1.15M, and $1.2M in the past 60 days, that’s a strong indicator of your home’s market value range.
Real estate agents and appraisers in Ontario use comps from the MLS database to build a Comparative Market Analysis (CMA). The goal is to identify what the market has actually paid for homes like yours, not what anyone hopes or guesses a home is worth.
What Makes a Good Comparable Sale?
Not all recently sold homes are useful comps. A quality comparable sale should match your property as closely as possible across these dimensions:
Recency
The more recent, the better. In an active market, sales from 30–60 days ago are ideal. Sales from 90+ days ago may reflect different market conditions, especially if interest rates or inventory levels have changed.
Location Proximity
In dense urban areas like Toronto, the best comps are on the same street or within a few blocks. Neighbourhood boundaries matter — a home across a major arterial road may be a different market entirely.
Property Type Match
Detached, semi-detached, townhouse, and condo markets operate independently. A comp for your detached home should be another detached home, not a semi-detached even if it’s nearby.
Similar Physical Characteristics
Good comps are similar in: square footage (within 15–20%), lot size, number of bedrooms and bathrooms, basement condition, garage presence, and overall renovation level.
What Is Your Home Worth Right Now?
Get a free, instant home value estimate based on real comparable sales in your neighbourhood — no sign-up required.
How Adjustments Work
No two homes are identical, so appraisers and agents make “adjustments” to account for differences between a comp and your property. Common adjustments include:
- Bedroom count: Adding a bedroom might add $50K–$80K in Toronto
- Bathroom count: An additional bathroom could add $20K–$40K
- Renovation level: A fully renovated home vs. original condition might justify a $100K–$200K adjustment
- Lot size: Extra lot width in Toronto can be worth $50K–$150K depending on neighbourhood
- Garage: In Toronto, an attached garage adds $30K–$60K; a detached garage $20K–$40K
Where to Find Comparable Sales Data
In Ontario, the best sources for comparable sales data are:
- Your real estate agent: Has full MLS access including all sale prices, days on market, and property details — the most comprehensive source
- HouseSigma: Provides recent sold data including prices for Ontario properties — highly useful for homeowner research
- Zolo and Wahi: Aggregate recent sold prices by neighbourhood
- Online estimation tools: Use algorithms that analyze nearby sales — good for a quick range
How Many Comps Do You Need?
For a confident price determination, you typically want at least 3–5 quality comparable sales. In dense urban areas like downtown Toronto, finding 5 comps within 500 metres isn’t unusual. In rural Ontario or for unique properties, you may need to expand your search radius or accept older comps.
Red Flags in Comparable Analysis
Watch out for these issues when reviewing comps:
- Using active listings, not sold homes: List prices are asking prices, not market values — only sales count
- Cherry-picking high comps: An agent suggesting an unusually high price may be using unrepresentative comps to win your listing
- Outdated data: In a changing market, a sale from 6 months ago may not reflect current conditions
- Ignoring condition adjustments: If your home needs work and comps are renovated, the adjustment must be applied
The Starting Point: Know Your Value
Before you dive into comps, get a baseline estimate for your property. An online tool can give you a quick range based on neighbourhood data — it’s the fastest first step before engaging an agent for a full CMA.