Thornhill South, Markham - October 2026 Real Estate Report
Thornhill South, Markham: Your Neighbour Just Got a Reality Check
If you own a home in Thornhill South and you haven't looked at your HonestDoor Price lately, now is the time. The market here is not crashing, but it is taking a breather - and the gap between what sellers want and what buyers will pay is very real right now. Here is the straight story.
The Vibe: Houses vs. Condos
Houses - The Premium End Is Feeling the Pressure
We are sitting at an average HonestDoor Price of $2,135,945 for houses in Thornhill South - down 2.65% from the previous period. That is not a collapse, but it is a signal worth paying attention to. The predicted market value sits at $2,193,998, and that number is trending down from the 3-month moving average of $2,209,414. The direction matters as much as the number.
- Average HonestDoor Price: $2,135,945 (down 2.65%)
- Average sale price: $2,300,000
- Average list price this month: $2,530,000
- Homes are selling at 90.91% of list price - buyers are negotiating, and winning
- Price per square foot: $541
- Average days on market: 172 days
- Rental estimate: $7,126 per month
- Rental yield: 3.75%
- Airbnb estimate: $354 per night - ranked No. 1 in Markham for Airbnb potential
That 172-day average is the number that should get your attention. On the neighbourhood leaderboard for days on market, Thornhill South houses rank 7 out of 7 in Markham. That means homes here are the slowest-selling in the city right now. Buyers have options and they know it. On the flip side, we rank No. 1 out of 9 for price - so we are the most expensive neighbourhood in Markham for houses. That combination - highest price, slowest sales - tells you exactly what kind of market we are in. It is a buyers' market, full stop.
For growth, we rank 9 out of 14 comparable neighbourhoods in Markham. Below average. Not alarming, but not something to ignore either.
Condos - Holding Steadier, But Not Outrunning the Pack
The condo side of Thornhill South is a different story. The average HonestDoor Price is $571,947, up a modest 0.53% from the previous period. Small gain, but at least it is moving in the right direction. The predicted market value is $568,947, which is slightly below the 3-month moving average of $571,590 - so even here, the short-term trend is softening a touch.
- Average HonestDoor Price: $571,947 (up 0.53%)
- Predicted market value: $568,947
- Rental estimate: $2,788 per month
- Rental yield: 3.71%
- Airbnb estimate: $139 per night
- Recent value change: up 0.81%
On the condo leaderboard, we rank 10 out of 14 for growth in Markham - below average. Nearby, Thornhill North condos ($604,657) and Concord-Vaughan ($697,944) are both priced higher. Newtonbrook East ($460,456) is cheaper. So for condos, we sit in the middle of the pack on price and toward the bottom on growth momentum. Not a crisis, but not a bragging point either.
The Secret Sauce: Why Your HonestDoor Price Matters More Than Your Tax Assessment Right Now
Here is the thing about your city assessment - it is a snapshot from the past. It does not know that Thornhill South houses are sitting on the market for 172 days on average. It does not know that buyers are consistently paying about 9% below asking. Your tax assessment is essentially a history lesson.
The HonestDoor Price is updated in real time using actual market activity. Right now, it is showing a house value of $2,135,945 - down 2.65% - while the city's number may still reflect a rosier picture from a year or two ago. If you are making any financial decision - refinancing, selling, even just understanding your net worth - the HonestDoor Price is the number that reflects what is actually happening on the street, not what happened before.
Think of it this way: your neighbour's assessment might say their home is worth $2.4 million. The HonestDoor Price says $2.1 million. The market is agreeing with HonestDoor. That gap is not just a number - it is the difference between a realistic listing strategy and sitting unsold for six months.
The "So What?" - Thinking About Selling This Summer?
If you are planning to list this summer, here is the honest take. Thornhill South is one of Markham's most expensive neighbourhoods for houses - that is a real advantage. But the market is slow and buyers are negotiating hard. Homes are selling at roughly 91 cents on the dollar, and the ones that are not priced right are sitting for nearly six months.
The sellers who will win this summer are the ones who price based on where the market is today - not where it was two years ago. That means starting with your HonestDoor Price as your anchor, not your assessment and not your neighbour's wishful listing price.
A few things to keep in mind before you list:
- Price it sharp from day one - overpriced homes in this market are sitting for 172 days on average
- Buyers are informed and they are negotiating - expect offers below asking
- The rental income story ($7,126 per month estimated) is a real selling point for investor buyers
- The No. 1 Airbnb ranking in Markham is a unique angle worth highlighting if your home suits short-term rental use
- Check your HonestDoor Price before you set your list price - it is the most current read on what the market will actually bear
Bottom line: Thornhill South is still a premium address in Markham. But premium does not mean immune to market forces. Price smart, move fast, and use the right data. That is how you win this summer.
thornhill south | markham | october 2026This information is all based on our opinions based on the information available to us. Everyone's situation may be different and you should reach out to us for more personalized information.