Sarnia-Lambton Market Update • October 2026
5.9 Months of Inventory: What Does It Mean for Sarnia Home Prices?
Record listings, steady values, and a Bank of Canada rate hike. Here’s what the October numbers really say.
One number tells you almost everything about the Sarnia-Lambton market right now: 5.9. That’s how many months it would take to sell every home on the market at October’s pace, the highest October reading in more than a decade and one-tenth away from buyer’s-market territory. Yet the typical home’s value is up 1.1% year-over-year, and well-priced homes are selling faster than they did last fall. Prices are holding. Leverage isn’t. Here’s how both things are true at once, and what it means for you.
October 2026 at a Glance
| Metric | October 2026 | vs. October 2025 |
|---|---|---|
| MLS® HPI Benchmark | $507,200 | ▲ 1.1% |
| Average Price | $491,038 | ▲ 0.3% |
| Median Price | $455,000 | ▬ 0.0% |
| Sales | 121 | ▼ 7.6% |
| New Listings | 294 | ▼ 1.7% |
| Active Listings | 715 | ▲ 13.1% |
| Months of Inventory | 5.9 | ▲ from 4.8 |
| Sale-to-List Price Ratio | 96.6% | ▲ from 96.2% |
| Median Days on Market | 25 | ▼ from 28 |
Arrows show direction of change, not good or bad. Fewer days on market, for example, means homes are selling faster. Source: CREA / Sarnia-Lambton Association of REALTORS®.
Why we lead with the HPI benchmark
Average price tells you what sold this month. The MLS® Home Price Index tells you what a typical home is worth. If a handful of lakefront homes sell, the average jumps, but the value of a standard 1970s three-bedroom with a single garage didn’t change. The HPI strips out that mix effect, which makes it the most reliable way to track real value over time.
What’s Actually Happening
The benchmark price rose to $507,200, up 3.8% from September and 1.1% from a year ago. Don’t read too much into the monthly jump. It was driven mostly by two-storey homes, and the six-month change is a more modest +0.9%. The bigger picture is stability: the benchmark is down just 0.8% over three years and 1.0% over five, so the typical home is worth roughly what it was in late 2021, and about 20% below the early-2022 peak.
Meanwhile, supply keeps building. 715 active listings is the most for any October in the data, up 13.1% from last year, up 134% from 2019, and about five times the 141 homes available in October 2021. New listings came in at 294, the second-highest October on record, and year-to-date new listings of 3,071 are the highest ever.
Demand hasn’t kept pace. 121 sales is down 7.6% from last October, the second-lowest October in 11 years, and roughly 21–24% below 2016, 2019 and 2021. Year-to-date, 1,255 sales is the lowest total in the dataset. This isn’t a crash. It’s a market running about a fifth below its pre-pandemic pace, while sellers keep listing.
So why are prices holding? Because the homes that are priced right are still moving. Median days on market fell to 25 from 28, and sellers averaged 96.6% of list price. The inventory build-up is mostly homes priced above where buyers are willing to go.
On average vs. median: the $491,038 average sits below the HPI benchmark this month because October’s sales leaned toward entry-level homes (the $300K–$399K range was the busiest). The roughly $36,000 gap between average and median is normal and reflects a handful of sales over $1 million. Year-to-date figures look softer (average $520,177, down 2.0%; median $460,000, down 3.2%), but October on its own was flat-to-up.
| $507,200HPI Benchmark+1.1% year-over-year | 5.9Months of InventoryHighest October on record |
| 715Active Listings+13.1% year-over-year | 96.6%Sale-to-List Ratio25 median days on market |
The months-of-inventory rule
Under 4 months = seller’s market. 4 to 6 months = balanced. Over 6 months = buyer’s market. At 5.9, Sarnia-Lambton is technically balanced but sitting right on the buyer’s edge, up from 0.9 months in October 2021, 4.7 in 2023 and 4.8 last year.
What Buyers Need to Know
- You have leverage, so use it. With nearly six months of inventory, inspection and financing conditions are back on the table. Listings that have sat 30+ days are where sellers are most ready to negotiate.
- Bungalow buyers have the most room. The one-storey benchmark is down 1.6% year-over-year across the region and down 6.5% in Sarnia city, even though bungalows remain the most popular style.
- Get a rate hold now. Fixed rates have already risen and the Bank of Canada has signalled it may raise rates again. A 120-day rate hold costs nothing and protects you.
- Winter is your window. Fewer buyers shop from November through February, but inventory is still elevated. That’s the best combination for a buyer.
Fixed vs. variable right now
The best 5-year fixed rate is about 4.44% and the best 5-year variable about 3.60% (Ratehub, November 6, 2026). Both are up from September (4.09% fixed, 3.30% variable). Variable is still roughly 0.8 points cheaper, but you’d be betting against a central bank that just started raising rates. Variable makes sense only if your budget can absorb another hike or two. If you value certainty, fixed is the safer call.
What Sellers Need to Know
- Price for today’s market, not 2022’s. The benchmark is about where it was five years ago and roughly 20% below the peak. Buyers know it.
- Plan for about 3.5% off list. The average sale closed at 96.6% of asking. Set your list price so the offer you land is the number you need.
- The first two to three weeks decide everything. Well-priced homes are selling in about 25 days. Miss that window and you become one of 715 options.
- Presentation is the tiebreaker. A pre-list inspection, small repairs, staging and professional photos matter far more in a six-month market than a one-month market.
- Know your micro-market. Petrolia at 2.7 months of inventory is a very different conversation than St. Clair Township at 9.7.
“Prices are holding. Leverage isn’t. In this market, the right price sells in 25 days, and the wrong price waits for spring.”
National Context: Rates Are Moving Again
Changed since last month: the Bank of Canada raised rates
On October 28, the Bank of Canada raised its policy rate by 0.25 points to 2.50%, its first increase since July 2023, after September inflation came in at 3.1%, driven largely by energy and gas prices. The big banks raised prime from 4.45% to 4.70% effective October 29. The Bank said further increases may be needed. The next decision is December 9.
Nationally, CREA reported September sales down 2.3% from August, with the national MLS® HPI down 3.4% year-over-year. Sarnia-Lambton’s benchmark, up 1.1%, is outperforming the country on value.
CREA’s October forecast (its third downgrade this year) now calls for national sales to fall 5.2% in 2026, with the average price essentially flat (+0.2%), before sales recover 4.4% in 2027. For Ontario, CREA expects sales to fall 3% this year and rise 5.3% in 2027.
| Rate snapshot | Now | Last month |
|---|---|---|
| Bank of Canada policy rate | 2.50% | 2.25% |
| Prime rate | 4.70% | 4.45% |
| Best 5-year fixed | ~4.44% | ~4.09% |
| Best 5-year variable | ~3.60% | ~3.30% |
Rates current as of November 11, 2026. Best available rates vary by lender, down payment and qualification.
Federal Policy: What’s New and What Matters Here
| $50KMax GST rebate for first-time buyers (new homes) | $1.5MProposed optional mortgage insurance ceiling | Feb 1, 2027Triplex & fourplex insurance rules begin |
- First-time buyer GST rebate: no GST on new homes up to $1 million, a rebate of up to $50,000. It applies to new builds only, so it’s most relevant to buyers looking at new construction in Lambton County.
- Federal Budget 2026 (November 5): proposes raising the price ceiling for optional mortgage insurance from $1 million to $1.5 million, with no start date confirmed yet. With roughly 94% of local sales under $1 million, the direct local impact is small.
- Small investors take note: triplexes and fourplexes become eligible under new mortgage insurance rules starting February 1, 2027.
- The budget also proposes extending the ban on foreign buyers of existing homes to January 1, 2029, with an exemption for new builds.
Local Insights: Home Styles
CREA tracks value by home style through the HPI benchmark. Two-storey homes drove October’s gain, while one-storey values are softer than a year ago.
| Benchmark type | October 2026 | 1-month | 12-month |
|---|---|---|---|
| Composite | $507,200 | ▲ 3.8% | ▲ 1.1% |
| One Storey | $544,100 | ▲ 2.2% | ▼ 1.6% |
| Two Storey | $456,800 | ▲ 5.1% | ▲ 4.2% |
Bungalows remain the most popular style in Sarnia-Lambton by a wide margin, accounting for about half of all residential sales in October:
| Rank | Style | Sales | Avg. Sale Price |
|---|---|---|---|
| 1 | Bungalow | 61 | $462,986 |
| 2 | 2 Storey | 19 | $604,016 |
| 3 | 1½ Storey | 9 | $397,100 |
| 4 | Raised Ranch | 5 | $533,980 |
| 5 (tie) | Back Split / Side Split 4-Level | 4 each | $488,000 / $465,625 |
Home style sales from SLAR MLS® Detailed Statistics (CREA does not publish sales by style).
Where buyers are shopping: the $300,000–$399,999 range was the single busiest price band (about 26% of sales), and roughly 45% of all sales landed between $300,000 and $499,999. About 10% sold for $800,000 or more, including seven sales over $1 million.
Area Breakdown
| Area | Sales | Avg. Price | Months of Inv. | HPI Benchmark | HPI YoY |
|---|---|---|---|---|---|
| Sarnia | 73 | $453,155 | 5.5 | $460,900 | ▼ 1.3% |
| Enniskillen / Petrolia | 14 | $445,243 | 2.7 | $523,700 | ▲ 4.8% |
| Plympton-Wyoming | 11 | $797,945 | 7.5 | $726,500 | ▼ 3.5% |
| St. Clair Township | 10 | $494,100 | 9.7 | $550,700 | ▼ 0.7% |
| Lambton Shores | 4 | $573,000 | 13.8 | $569,500 | ▲ 10.0% |
Source: CREA. Months of inventory shown for each municipality; Petrolia shown at 2.7 months.
- Sarnia is the volume engine, with 73 sales, about 60% of the region. Inventory is up 21.7% and months of inventory rose from 3.9 to 5.5 in a year.
- Plympton-Wyoming and the Lakeshore corridor lead on price, with the highest average ($797,945) and the highest benchmark ($726,500). But the benchmark is down 3.5% and inventory sits at 7.5 months, so top-end buyers are negotiating.
- Petrolia is the tightest market in the region, at 2.7 months of inventory with its benchmark up 4.9%. That’s seller’s-market territory.
- St. Clair Township is firmly a buyer’s market at 9.7 months, with Corunna showing 57 active listings against 6 sales.
- Lambton Shores posted the strongest benchmark gain (+10%), but on only 4 sales, so treat it with caution.
The takeaway: there isn’t one Sarnia-Lambton market. Where you buy or sell changes the whole strategy.
What’s Coming Next
- November 17: CREA releases national October statistics.
- December 9: Bank of Canada rate decision. A second increase is a real possibility, depending on inflation.
- November local data: the first month that will fully reflect the rate hike and higher fixed rates.
- Winter inventory: listings typically expire and inventory drains over the winter. If the 715 active listings don’t come down, that’s a meaningful signal.
- Spring 2027: CREA expects a sales rebound. Whether rates allow it is the big question.
Final Thoughts
October’s data tells a clear story: values in Sarnia-Lambton are stable, and outperforming the national market, but the balance of power is shifting toward buyers. Inventory is at a decade-plus high, sales are running well below historical norms, and borrowing costs just went up. None of that means prices are about to fall off a cliff. It means pricing, preparation and local knowledge matter more now than they have in years.
If you’re buying, this is the most negotiating room you’ve had since before the pandemic. If you’re selling, the right strategy still gets you sold in under a month. The wrong one means waiting for spring. Either way, the details of your specific neighbourhood and home style make all the difference.
Thinking About Making a Move?
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Sean Ryan, Broker/Owner • Blue Coast Realty Ltd.
📞 226-778-0747 | ✉️ sean@bluecoastteam.com | 📍 169 Christina Street N, Sarnia ON
🌐 bluecoastteam.com | sarniaproperty.com
Disclaimer: This article is for general information only and does not constitute financial, legal or real estate advice. Statistics are from the Canadian Real Estate Association (CREA) Sarnia-Lambton Residential Market Activity and MLS® Home Price Index Report for October 2026 and the Sarnia-Lambton Association of REALTORS® MLS® System; CREA figures are used where sources differ. Data is deemed reliable but not guaranteed. Interest rates, forecasts and policy details are current as of November 11, 2026 and subject to change. Not intended to solicit buyers or sellers currently under contract. Blue Coast Realty Ltd., Brokerage.
