Sunita Somvanshi
If you’ve been watching the Federal Reserve for direction on where mortgage rates are heading, last week’s decision gave a clear answer — though not the one many buyers hoped for.
The Federal Reserve raised its benchmark interest-rate target by 25 basis points on September 16, pushing it to a range of 3.75%–4%, adding to borrowing costs across the US. 30-year fixed mortgage rates have been running near 6% through 2026, with Fannie Mae projecting rates to hover around that level for the remainder of the year. For many prospective buyers, the math on a monthly payment remains stretched.
In Seattle, the rate rise is arriving into a market that has changed substantially from recent years — inventory has surged to levels not seen in more than a decade. Local MLS data shows Seattle listings at a 15-year high, with around 8,630 homes available — roughly 88% above normal levels for this time of year. The Fed controls the cost of borrowing. It does not control how many Seattle homeowners decide to sell.
What Seattle’s Inventory Surge Means for Buyers
When the Fed raises rates, monthly mortgage payments on a given purchase price increase. Buyers who had been holding out for rates to fall are now facing a move in the opposite direction. In Seattle, however, the high volume of available listings means the competitive bidding pressure that defined the city’s market in previous years has eased considerably.
The dynamic works differently than in a low-inventory cycle. A buyer facing a higher rate has more listings to consider — and more negotiating room than was available when supply was tight. The offset is partial, not complete: a higher monthly cost is a higher monthly cost regardless of how many homes are on the market, and Seattle prices remain elevated in absolute terms.
Washington State’s HB 1110 middle-housing law is one regulatory change analysts cite as a factor in the supply increase. The state-level reform, which requires cities to allow more housing types near transit and town centres, has contributed to a broader expansion of available inventory in the greater Seattle area. Understanding current Seattle housing inventory data and tracking the latest mortgage rate movements gives buyers the most current read on their specific affordability picture.
The national picture has played out differently in Seattle than in markets that have not seen the same inventory expansion. Seattle’s surge means the city sits in a different position from high-demand markets where supply has not kept pace with population.
Mortgage rates have been running near 6% through 2026, with forecasters projecting they will remain around that level through year-end. The September rate hike may push mortgage costs modestly higher depending on how lenders respond to the Fed’s move.
The next Federal Reserve meeting is the clearest near-term signal for whether the current rate trajectory continues or pauses. Seattle buyers watching the market should track both the federal rate decisions and local MLS inventory figures — the two together tell the real story.
