Seattle Housing Market Shifts as Inventory Surges and Prices Soften

Principal economist Jeff Tucker noted that King County median home prices dropped 7% year-over-year against the same rising-inventory backdrop. The combined figures confirm a measurable cooldown across the Central Puget Sound region, with months-of-inventory readings now at multi-quarter highs in both King and Snohomish counties.

Inventory Build Across the Central Sound

• King County active listings: 8,876 homes, up 31.4% year-over-year
• Snohomish County active listings: 3,255 homes, up 39.9% year-over-year
• Months of inventory: 4.7 in King County, 4.1 in Snohomish
• Per NW Real Estate Pulse analysis of the same NWMLS dataset, the third consecutive month of double-digit supply expansion in both counties has cemented a shift toward buyer leverage
• A months-of-inventory reading above 4 is a textbook threshold separating seller-leaning from balanced markets; King County crossed that line in July and held it through August

Median Compression and Sales Velocity

• NWMLS-wide closed sales: down 7% year-over-year in August
• King County median sale price: down 7% year-over-year
• Inventory absorption is decelerating faster than price—a sequence that historically precedes sustained buyer leverage
• The 21% active-inventory gain versus the 7% sales decline implies a net supply addition of roughly 28 percentage points in a single year

What to Track Into Q4

• Mortgage rates: per a Zillow projection cited by TheStreet, a rate shift is on the horizon that could reset payment math within weeks
• Surveyor sentiment, per a separate Kent Online report, indicates the market is gradually finding its footing—a softer directional read than the raw NWMLS numbers
• For sellers in King County: pricing 3–5% below June comps is positioning competitively as of September
• For buyers: 4–5 months of supply supports contingency-based negotiation on inspection and appraisal; each basis-point move in rate shifts qualification ceilings by 2–4%

The next eight weeks will determine whether this is seasonal softening or the opening of a structural rebalance.