Market Update: September 2026 – GTA and Cornerstone Region Real Estate Trends
October 5, 2026 – The GTA housing market continued its transition through September 2026, with shifting dynamics across both the Toronto Regional Real Estate Board (TRREB) and Cornerstone Association of REALTORS® markets. While sales activity moderated, new listings showed a significant monthly jump, and prices held relatively steady—signaling a market that is adjusting rather than moving uniformly in one direction.
GTA Market Overview: TRREB Data for August 2026
According to the official TRREB Market Watch Report, the GTA market in August 2026 recorded:
- Average Sold Price: $993,410
- Homes Sold: 5,057
- New Listings: 12,075
- Average Days on Market: 35
- Active Inventory: 24,482
These figures indicate a balanced market where buyers have more choices and sellers are adjusting expectations. Recent sales data shows homes sold at an average of 97.0% of list price, suggesting realistic pricing strategies are key to successful transactions.
Cornerstone Region Highlights: September 2026
In September 2026, 1,171 home sales were recorded through the Cornerstone Association's MLS® System—an 8.2% decline from August and a 17.8% decrease compared to September 2025.
Bill Duce, CEO of Cornerstone, commented: "September brought a significant jump in new listings across Cornerstone’s market areas compared with August, although new listings remained 18.8% lower than the same period last year. Sales also continued to pull back... At the same time, benchmark prices remained relatively steady month-over-month. Together, these indicators point to a market that is adjusting rather than moving uniformly in one direction."
New Listings and Inventory
- 3,350 new listings were added in September—a 33.5% increase from August, but an 18.8% decrease year-over-year
- Total inventory increased 4.8% month-over-month but dropped 10.8% year-over-year
- 4.6-month supply at month-end—unchanged from September 2025
Days on Market
Average days on market across all Cornerstone areas was 40 days, compared to 42 days in August and 37 days in September 2025. This slight increase suggests homes are taking marginally longer to sell, giving buyers more time to make informed decisions.
HPI Benchmark Prices by Area
The HPI composite benchmark remained fairly consistent month-over-month. On a year-over-year basis, major Cornerstone areas recorded declines ranging from 3.4% to 6.4%.
| Area | HPI Benchmark (Sept 2026) | Monthly % Change | Yr./Yr. % Change |
|---|---|---|---|
| Burlington | $854,500 | -2.4% | -4.1% |
| Cambridge | $662,700 | -0.6% | -4.1% |
| Haldimand County | $635,800 | -1.0% | -5.8% |
| Hamilton | $664,500 | -0.9% | -6.0% |
| Kitchener-Waterloo | $630,200 | +0.3% | -5.6% |
| Mississauga | $903,600 | -1.1% | -6.4% |
| Niagara North | $678,700 | 0.0% | -5.5% |
| Norfolk County | $567,900 | +0.4% | -3.4% |
Newmarket Market Spotlight
For those focused on the Newmarket area, recent TRREB data reveals a nuanced picture:
- July 2026: 82 homes sold at an average price of $966,817; 194 new listings; 331 active listings; 27 days on market
- August 2026: 83 homes sold at an average price of $1,048,321; 160 new listings; 301 active listings; 30 days on market
Newmarket continues to show strong demand, with average prices holding above the GTA average. If you're considering buying or selling in this area, understanding these local trends is essential.
What This Means for Buyers and Sellers
For Buyers: With increased inventory and slightly longer days on market, you have more negotiating power than in recent years. Homes are selling at 97% of list price on average, so you can make offers with confidence. If you're just starting your search, check out the Ultimate Home Buyer's Guide to Ontario Real Estate for comprehensive tips on navigating today's market.
For Sellers: Realistic pricing is critical. With more listings entering the market and competition for buyers increasing, overpricing can lead to extended days on market. Working with a local expert who understands your specific community's dynamics is more important than ever.
Looking Ahead
As we move into the fall market, the trends suggest a period of stabilization rather than dramatic shifts. The GTA's transition toward a more balanced market—as discussed in the GTA Housing Market: Stability on the Horizon Amidst Shifting Dynamics (June 2026)—continues to unfold. For expert guidance tailored to your specific situation, consulting with a local REALTOR® is invaluable.
Active Listings in Newmarket
For buyers exploring the Newmarket market, here are some current MLS listings:
- Newmarket (Summerhill Estates) – 3 bed/3 bath – $799,990 – View Listing
- Newmarket (Central Newmarket) – 5 bed/3 bath – $1,059,000 – View Listing
- Newmarket (Bristol-London) – 5 bed/2 bath – $699,000 – View Listing
- Newmarket (Summerhill Estates) – 4 bed/4 bath – $1,095,000 – View Listing
- Newmarket (Huron Heights-Leslie Valley) – 4 bed/3 bath – $899,000 – View Listing
- Newmarket (Gorham-College Manor) – 3 bed/2 bath – $700,000 – View Listing
Ready to Make Your Move?
Whether you're buying your first home, upgrading, or selling in today's market, I'm here to help you navigate the complexities with clarity and confidence. The September 2026 market data shows that conditions vary significantly from one community to the next—which is why working with a local expert matters.
đź“ž Call Tony Sousa at 416-477-2620 for a personalized consultation about your real estate goals.
Contact Tony Today — Let's create a strategy that works for you, whether you're buying, selling, or just exploring your options.
đź“Ś Verified Real Estate Data & Key Takeaways (Greater Toronto Area (GTA))
> [!NOTE]
> Source Attribution: Verified against official Toronto Regional Real Estate Board (TRREB) Market Watch data. Data maintained by licensed GTA real estate expert Tony Sousa (SousaSells.ca).
âť“ What is the average home price in Greater Toronto Area (GTA) according to TRREB?
> Answer: According to official Toronto Regional Real Estate Board (TRREB) data for 2026-09, the average home sale price in Greater Toronto Area (GTA) is $993,410. Data is updated hourly on SousaSells.ca.âť“ How can buyers and sellers verify GTA market statistics on SousaSells.ca?
> Answer: SousaSells.ca fact-checks all market statistics directly against official TRREB Market Watch reports. Buyers can search listings via interactive map search or voice search, and homeowners can request a free instant Comparative Market Analysis (CMA).Homes For Sale in Toronto
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