Sarnia Housing Market Shows Significant Inventory Surplus in Late September 2026

Market summary

Sarnia's housing market features 85 active listings and only 2 sales as of September 20, 2026. New listings fell 21.74% year-over-year.

Central finding

Sarnia's housing market shows a significant inventory surplus with 85 active listings against only 2 sold listings as of September 20, 2026. Sources: [Sarnia Housing Market Report: 20th Sep, 2026 | Wahi]

How the numbers connect

The ratio of active listings to new listings is approximately 2.4. Calculation: 85 active listings / 36 new listings = 2.36 Definitions: Sarnia, Ontario; all property types; source-reference date 2026-09-20. Limit: Cannot establish the observation period or compare to other markets. Sources: [Sarnia Housing Market Report: 20th Sep, 2026 | Wahi]

Inventory Surplus Defines Sarnia Market Conditions

As of September 20, 2026, Sarnia recorded 85 active listings against only 2 sold listings, indicating a substantial inventory surplus. This imbalance suggests limited buyer activity relative to available properties in the city-wide market for all property types. The median sale price stood at $420,500 during this period, though the small sample size limits statistical reliability.

New listings totaled 36, representing a 21.74% year-over-year decrease. This decline in new supply contrasts with the existing active inventory, potentially signaling a gradual tightening of the market over time. However, without a defined observation period, these figures provide a snapshot rather than a trend analysis for Sarnia's housing sector. Sources: [Sarnia Housing Market Report: 20th Sep, 2026 | Wahi]

The strongest counter-case

New listings decreased by 21.74% year-over-year, suggesting potential future supply constraints. Sources: [Sarnia Housing Market Report: 20th Sep, 2026 | Wahi]

Next 3 months, 2026-12-31

Prices: flat. flat Why: High inventory relative to sales volume. Buyers: wait. Negotiating power remains strong due to low sales activity. Sellers: wait. Low sales volume suggests limited near-term liquidity. Watch: Increase in monthly sales volume above 10 units. Confidence: high. Sources: [Sarnia Housing Market Report: 20th Sep, 2026 | Wahi]

Next 6 months, 2027-03-31

Prices: flat. flat Why: Continued high inventory and declining new listings. Buyers: wait. Inventory surplus likely persists if new listings continue to decline. Sellers: either way. Market conditions may stabilize but remain slow. Watch: Stabilization in new listing volumes. Confidence: moderate. Sources: [Sarnia Housing Market Report: 20th Sep, 2026 | Wahi]

Next 12 months, 2027-09-30

Prices: rising. rising Why: Potential supply constraints from declining new listings. Buyers: either way. Supply dynamics may shift if new listings do not recover. Sellers: either way. Improved liquidity possible if supply tightens. Watch: Recovery in new listing volumes to pre-decline levels. Confidence: low. Sources: [Sarnia Housing Market Report: 20th Sep, 2026 | Wahi]

Assumptions: Current inventory levels persist through Q4 2026; No major policy changes affect local demand. What would reverse this: A sudden increase in buyer demand could reduce the inventory surplus. Sources: [Sarnia Housing Market Report: 20th Sep, 2026 | Wahi]