Burlington's Average Price Went Up. So Why Did the Typical Home Get Cheaper?

Burlington's September 2026 numbers point in two directions at once. The average sale price was up from a year earlier. The benchmark price for a typical home was down. A third report on the same city and the same month showed the average falling. How can all three be true?

All three hold up, and the gap between them matters to a buyer more than the headline does. In September 2026, the rise in Burlington's average price came almost entirely from the upper end of the detached market. Below that, the homes most first-time and move-up buyers are pricing out, from semis and townhouses to apartment condos, sold for less than a year earlier and took longer to sell. These are the latest monthly figures available as this post goes up at the end of October. October's data comes out in early November.

Three Readings of One September

Here are the three headline figures, each with the system it comes from.

The benchmark is the steadiest of the three. Cornerstone's September market update puts Burlington's composite benchmark at $854,500, down 2.4% in a month and 4.1% in a year. The table in that update carries an "August 2026" label. The association's previous update, published September 3, listed August's benchmark at $875,700, and the drop from $875,700 to $854,500 is exactly the 2.4% monthly decline shown. So the figure is the latest benchmark in the September update.

Cornerstone explains the difference between the two measures. Its statistics hub says average sale prices can show long-term trends but shouldn't be read as the value of any particular property. The HPI follows a typical home so that prices can be compared like for like. If the average goes up while the benchmark goes down, the homes that sold that month were not typical.

The Average Rose Because the Top of the Detached Market Sold

Cornerstone's September 2026 Burlington Monthly Indicators report, built on ITSO data current as of October 2, 2026, splits the city into single-family homes and a combined townhouse, condo and semi-detached group.

For single-family homes in September 2026:

• Sales fell to 77 from 96 a year earlier, a drop of 19.8%.
• The median sale price rose 1.8% to $1,190,000.
• The average sale price rose 6.2% to $1,360,500.
• Average days on market fell to 26 from 34.
• Months of supply tightened to 3.1 from 3.6.

The gap between median and average matters most here. A median moves when the middle of the market moves. An average moves when a few expensive sales land in the same month. In September 2025, the single-family average was about $112,000 above the median. By September 2026, the gap had grown to about $170,000. The middle of the detached market barely moved. Higher-priced sales pulled the average up.

Mix doesn't explain the citywide rise either. Single-family homes made up about 53% of the two groups' combined sales in September 2026, down from about 57% a year earlier. Fewer detached homes sold, but the ones that did sold for more on average.

Supply is what makes this segment tight. Single-family new listings fell to 211 from 247, and inventory fell to 274 from 341. With fewer choices, detached homes sold faster in September than a year earlier. Even so, sellers received 96.6% of list price on average, down slightly from 97.2%. Homes moved quickly, but sellers were not getting above asking on average.

Below the Detached Line, Prices Slipped and Listings Sat Longer

The same Cornerstone report shows a different market for townhouses, condos and semi-detached homes in September 2026:

• The median sale price fell 8.2% to $670,000, from $730,000.
• The average fell 5.1% to $734,527.
• Average days on market rose to 42 from 37. Year to date, it was 45 days compared with 37 at the same point in 2025.
• Months of supply was 4.1, compared with 3.1 for single-family homes.

The decline isn't a one-month blip. The year-to-date median for this group was $690,000 in 2026, down 7.4% from $745,000 over the same months of 2025.

TRREB's numbers split the attached market further. As reported by Inside Halton, here is how each type moved year over year in September 2026:

In TRREB's data, detached homes were the only type that gained year over year. Every attached and condo category fell. Apartment-style condos stand out most. At the end of September there were 219 active listings against 24 sales that month, about nine listings for every sale. Each sale took 66 days on average.

The apartment-condo figures also show how unreliable averages are on small sample sizes. The segment's average jumped 23.6% from August to September yet was still 5.9% lower than a year earlier. With only 24 sales, a few units in a pricier building can produce a jump like that. The year-over-year direction is more reliable than the monthly swing.

Why the Same City Produces Two Scoreboards

Burlington gets two sets of numbers because Ontario has more than one MLS® system. Cornerstone's statistics come from the ITSO MLS® System. Cornerstone's own reports note that "Multiple MLS® Systems operate within Ontario" and that none "can be guaranteed to include every property listed or sold within a given area." ITSO serves Cornerstone and the Brantford Regional Real Estate Board. TRREB's figures come from the PropTx system. On its Market Watch page, TRREB describes PropTx as the system "of which TRREB is a part." TRREB's community reports list Burlington under Halton, along with Halton Hills, Milton and Oakville.

The local association itself is fairly new. REM reported that members of the REALTORS® Association of Hamilton-Burlington voted in November 2023 to amalgamate with two other boards. A later REM report covered the Mississauga Real Estate Board's vote to join, and Cornerstone launched on July 1, 2024.

A Burlington listing can also be posted on more than one system. Cornerstone's interboarding page accepts listings from REALTORS® at other Ontario boards and names Burlington within its market area. TRREB has its own process for bringing outside listings into its system.

Neither organization publishes a reconciliation of the 150 and 177 sales counts for September. The fairest reading is that they are two overlapping but separate samples of the same city. When each sample contains a different handful of high-priced detached sales, the citywide averages can move in opposite directions. Both data sets agree on the pattern underneath, though. In both, detached homes rose and the attached and condo segments fell.

Matching the Data to Your Search

The citywide average doesn't describe the home most buyers in Burlington are actually looking for. A more useful approach is to start with your segment:

1. Use the median for your property type. For townhouses, condos and semis in September 2026, the median was $670,000, down 8.2% year over year.
2. Compare days on market to the segment, not the city. A detached listing at day 40 has been on the market much longer than that segment's 26-day average. An apartment condo at day 40 is still well under its segment's 66-day average.
3. Look at the list-to-sale ratio. All residential properties in Burlington sold for 96.9% of list price on average in September 2026, down from 97.5% a year earlier. That figure is a starting point for judging asking prices and offers.
4. Check months of supply by type. At 3.1 months for single-family homes and 4.1 for the attached group, buyers in each segment had different amounts of choice in September 2026.

Across Cornerstone's full service area, September 2026 had 4.6 months of supply and 40 average days on market. Burlington overall was tighter, at 3.6 months and 34 days. Burlington's tightness is mostly a detached-market story, though.

Frequently Asked Questions

Did Burlington home prices go up or down in September 2026? On the latest benchmark for a typical home in Cornerstone's September update, prices fell 4.1% year over year to $854,500. The 2.2% rise in Cornerstone's average sale price came mainly from higher-priced detached sales.

Which data set should a buyer trust? Both are legitimate MLS® samples. Neither is guaranteed to include every Burlington sale, so the direction within your property type matters more than either citywide average.

When does the next update come out? Cornerstone published its September figures on October 5, 2026. October's figures should follow in early November.

If you're weighing a Burlington townhouse against a detached home, or trying to tell whether a condo's asking price reflects its segment or the citywide headline, Team Durrani can pull the segment-level numbers for the homes you're considering and walk through them with you before you make an offer. Schedule a Consultation.