Every MLS listing comes with a counter showing how many days it has been on the market. For homes that sold in Oakville in September 2026, that counter averaged 32 days. The same homes had actually been for sale for an average of 56 days.
The 24 days in between belong to earlier listings of the same property that ended and were replaced. They describe Oakville's market this fall more accurately than the headline about September's numbers, which said prices had jumped.
Two clocks, one property
The Toronto Regional Real Estate Board reports both figures in its monthly Market Watch. In the board's definitions, Average Listing Days on Market, or LDOM, is the average number of days sold listings were on the market. Average Property Days on Market, or PDOM, is the average number of days a property was on the market before selling, "irrespective of whether the property was listed more than once by the same combination of seller and brokerage during the original listing contract period."
So when a home comes off the market and goes back on under the same contract, the public counter starts again at zero, while the property's own clock keeps running. A buyer looking at a listing that says three weeks may be looking at a home that has been available since summer, often at a different asking price.
The Oakville, Milton and District Real Estate Board pointed to the same thing before September's figures came out. In its August 2026 market report, OMDREB President Heidi Noël said: "We're seeing properties that didn't sell earlier in the year return to market, often at a different price, so not every new listing represents new inventory."
Oakville runs the widest gap in Halton
Gaps like this show up across the region. Oakville's is the widest, and it comes with the region's thinnest buyer pressure. Here are TRREB's figures for September 2026, all home types:
| September 2026 | Sales-to-new-listings ratio | Months of inventory | Avg. LDOM | Avg. PDOM | Gap in days |
|---|---|---|---|---|---|
| Oakville | 36.5% | 4.9 | 32 | 56 | 24 |
| Halton Hills | 39.4% | 4.1 | 27 | 50 | 23 |
| Milton | 40.6% | 3.8 | 35 | 56 | 21 |
| Halton Region | 40.4% | 4.2 | 33 | 53 | 20 |
| Burlington | 46.1% | 3.6 | 34 | 49 | 15 |
TRREB calculates both the sales-to-new-listings ratio and months of inventory as 12-month moving averages, so neither figure is a September blip. Oakville is the most expensive municipality in Halton, with a September average sale price of $1,365,169. It also had the lowest ratio of sales to new listings and the most months of inventory.
Detached houses show it most clearly. Oakville recorded 85 detached sales in September 2026, against 394 new detached listings and 596 active ones at month's end. At that month's pace, the active detached supply works out to roughly seven months of sales.
When supply sits that long, unsold homes often get withdrawn, repriced and relisted, and each relist resets the visible counter. So the high inventory and the wide gap between the two clocks are likely two views of the same slow market.
Why the headline went the other way
A story in InsideHalton reported that Oakville's average price reached $1.37 million in September 2026, up 3.1 percent from August, though down 2.5 percent from September 2025. The same article's breakdown shows where the rise came from.
Detached houses, the largest category, averaged $1.74 million in September 2026. That was down 2.7 percent from August and 5.9 percent from a year earlier. Townhouse-style condos were the category that rose 67.5 percent in a month, on 13 sales. With so few sales, a handful of larger units can move the whole average.
OMDREB made the same point about its own figures. In the board's September 2026 report, Noël said that "when relatively few homes are selling, just a handful of higher-priced transactions can push the average up. That doesn't necessarily mean property values are rising across the board."
The MLS Home Price Index exists to strip out that mix effect. It prices a typical home rather than averaging whatever happened to sell that month. For Oakville in September 2026, TRREB put the composite benchmark at $1,128,800, down 3.03 percent from a year earlier, and the single-family detached benchmark at $1,573,000, down 3.02 percent. Measured this way, Oakville prices fell over the year, which fits a market where homes take two months to sell.
Asking prices sit above what sells
OMDREB's public data adds one more sign of how far apart buyers and sellers are. For Oakville single-family homes in September 2026, the board reported an average sale price of $1,703,194 and an "Average List Price" of $2,214,420. OMDREB doesn't publish a definition for that list-price figure. The arithmetic of its reports suggests it averages the asking prices of new listings entered during the month. Read that way, the homes coming to market are priced about half a million dollars above the homes that actually sold.
These are averages of two different groups of homes, so the gap doesn't prove that any one seller is overpriced. It does fit what the rest of the report shows. Oakville's average sale-to-list ratio was 96 percent in September 2026, and 95 percent for detached houses. Across Halton in August 2026, OMDREB reported that 81.3 percent of single-family homes sold below asking.
What the full clock tells a buyer comparing towns
None of this means demand has disappeared. OMDREB reported that Oakville single-family sales through September 2026 were running 13.0 percent above the 2025 pace for the year, even as September itself fell 15.2 percent from a year earlier. TRREB described GTA buyers in September as being "in a holding pattern" amid uncertainty about the economy, inflation and borrowing costs. Buyers are still active, but they are slower and more selective than the listing flow assumes.
For someone weighing Oakville against Burlington or Milton, the full clock changes how a listing reads. Three numbers say more than the asking price:
- The property's full time on market. This is the PDOM, not the counter on the current listing. In Oakville in September 2026, the two were 24 days apart on average.
- Its earlier asking prices. Noël noted that returning listings often come back at a different price.
- How that home's type is moving. Detached and condo figures moved in opposite directions in September, so a town-wide average can point the wrong way for the home you're actually considering.
OMDREB's own outlook says much the same, describing a market where "more properties are coming onto the market, many sellers are adjusting their expectations, and buyers continue to have room to negotiate." Sellers face the same calculation from the other side. In a town where homes have been sitting for close to two months, buyers are already looking at a listing's full history before they make an offer.
The October figures, due in the first week of November, will show whether the autumn listings found buyers or added to the gap.
Questions that come up
Why do TRREB and OMDREB report slightly different Oakville sales counts? For September 2026, TRREB counted 162 Oakville sales and 699 new listings, while OMDREB counted 160 and 704. They are separate data series with different property groupings, so compare each board's figures with its own earlier months rather than mixing the two.
What does a 36.5 percent sales-to-new-listings ratio mean? It means that over the past 12 months, Oakville recorded about 36 sales for every 100 new listings, measured as TRREB's 12-month moving average. That was the lowest of any Halton municipality in September 2026.
Does a falling benchmark mean a particular home lost value? The MLS HPI benchmark measures a typical home in the area. Any single property's value depends on its own features, street and condition, which no town-wide index captures.
If you're comparing Oakville homes this fall and want that full history reviewed before you make an offer or set a price, Niblock Real Estate can walk through it with you. Book a Discovery Call.
