September 2026 Seattle Housing Market Update: Inventory Rises, Buyers Gain Leverage

More Inventory, Higher Mortgage Rates, and a Market That Rewards Strategy

The September 2026 housing market update shows a continued shift toward a more balanced market across King and Snohomish counties.

Inventory remains significantly higher than last year. Buyers have more choices. Homes are taking longer to sell. Mortgage rates remain a major affordability challenge. And the latest pending-sales data shows buyers are keeping more protections in place than they were a year ago.

This is a market where strategy matters.

For buyers, more inventory creates more opportunity.

For sellers, more inventory creates more competition.

For investors, more inventory creates more room to analyze.

The market is no longer behaving like the ultra-tight 2021 market. It is also not simply returning to the pre-pandemic market. Instead, we are seeing a different kind of balance: higher inventory, higher borrowing costs, more buyer selectivity, and continued long-term support for well-positioned homes.

[Insert Graphic: September Market Snapshot]

Quick Market Snapshot

Based on August 2026 NWMLS data:

The biggest story is inventory.

Compared with August 2025, active listings were up 31.4% in King County and 39.9% in Snohomish County. Months of inventory also increased meaningfully, rising 38.2% in King County and 46.4% in Snohomish County.

That gives buyers more room to compare homes, evaluate options, and negotiate thoughtfully.

It also means sellers need to be more intentional.

A home that was “good enough” to generate urgency in a low-inventory market may not perform the same way when buyers have more alternatives.

Inventory Is No Longer Tight

The clearest trend in the latest data is that inventory is no longer scarce in the way it was during 2021 and early 2022.

In August 2021, King County had 3,240 active listings. In August 2026, it had 8,876.

Snohomish County shows a similar pattern. In August 2021, Snohomish County had 1,231 active listings. In August 2026, it had 3,255.

That means both counties now have well over two and a half times as much inventory as they had during the ultra-tight 2021 market.

Inventory is also meaningfully higher than August 2022:

And inventory is now above August 2019 levels as well:

This is one of the most important pieces of context for buyers and sellers.

The market is no longer defined by scarcity in the way it was during 2021 and early 2022.

Buyers have options again.

Sellers need to compete more carefully.

[Insert Graphic: Historical Inventory Context]

Months of Inventory Shows the Same Shift

Months of inventory gives us another way to understand the change.

This is a very different supply environment.

In 2021, buyers often had to make decisions quickly because there simply were not many homes available.

In 2026, buyers have more options, and that changes how they evaluate homes, pricing, condition, and offer terms.

For sellers, this means the launch strategy matters more. A home that is priced too high or not presented well can lose momentum quickly.

Prices Have Softened, But Remain Historically Strong

Median prices declined year over year in both counties.

King County’s median sales price was $835,000 in August 2026, down 4.0% from August 2025.

Snohomish County’s median sales price was $700,000, down 6.0% from August 2025.

Month over month, King County’s median price declined 3.5%, while Snohomish County was essentially flat.

That tells us buyers remain price sensitive.

But historical context is important here too.

Compared with August 2021, King County’s median price is still higher than it was during the pandemic-era market. Snohomish County’s median price is also higher than August 2021.

Compared with August 2019, the change is even more dramatic:

• King County median price: $610,000 in August 2019 vs. $835,000 in August 2026
  
  
• Snohomish County median price: $463,900 in August 2019 vs. $700,000 in August 2026
  
  

So while prices have softened from last year, they remain well above pre-pandemic levels.

For many homeowners, equity remains strong.

For many buyers, affordability remains challenging.

Both things can be true at the same time.

Mortgage Rates Are Reshaping the Market

Mortgage rates continue to be one of the biggest forces shaping buyer behavior.

The average 30-year mortgage rate was approximately 6.67% in August 2026.

That is slightly higher than August 2025, when the average was approximately 6.59%, and dramatically higher than the rate environment buyers experienced in 2021.

That change matters.

A buyer at 6.67% is not just shopping for a home price. They are shopping for a monthly payment.

Higher mortgage rates affect:

• affordability
  
  
• price sensitivity
  
  
• buyer confidence
  
  
• offer strategy
  
  
• inspection decisions
  
  
• requests for seller credits
  
  
• interest in rate buydowns
  
  
• willingness to stretch for a home
  
  

This is one reason the market can have historically high prices and still feel more cautious.

The monthly payment on today’s median-priced home is dramatically different than it would have been at 2021 mortgage rates. That payment shock continues to shape buyer behavior across King and Snohomish counties.

[Insert Graphic: Mortgage Rates Context]

Broader Economic Context: Rates, Jobs, Inflation, and Local Affordability

The broader economic backdrop remains mixed.

Mortgage rates remain elevated, keeping affordability under pressure. National unemployment was 4.1% in August, while the latest available local data showed Seattle-area unemployment and Washington unemployment both at 5.2% in June.

Seattle-area inflation, based on the latest available local CPI reading, was approximately 4.5% year over year in June.

That matters because buyers are not only responding to mortgage rates. They are also responding to the broader cost of living.

Housing affordability remains challenging.

At the same time, the Puget Sound region continues to benefit from high household incomes, long-term employment strength, and limited housing supply in many desirable neighborhoods.

That combination helps explain why prices remain historically strong compared with pre-pandemic levels, even as inventory rises and buyers become more selective.

Buyer Behavior: Pending Sales Confirm the Shift

The latest NWMLS Pending Listing Report gives us a useful look at what buyers are doing right now.

The report was generated September 8, 2026 and compares current pending activity against the August 1–31, 2025 date range for residential properties in King and Snohomish counties.

The report shows a current pending count of 2,596 compared with 2,426 in the August 2025 date range.

That means buyers are still active.

But the rest of the report shows they are behaving differently:

The median unpublished pending price was $831,250, down 5.7% from the August 2025 date range. The average unpublished pending price-to-list-price ratio was 98%, down from 99%.

The buyer behavior metrics are especially important. Multiple-offer activity fell from 26% to 19%, escalation addenda fell from 9% to 6%, finance addenda increased from 72% to 77%, and inspection addenda increased from 43% to 51%.

That is one of the clearest signs of a more deliberate market.

Buyers are not disappearing.

They are becoming more careful.

They are less likely to escalate aggressively and more likely to keep financing and inspection protections in place.

[Insert Graphic: Buyer Behavior in Pending Sales]

Pending Sales Show Buyers Are Active, But Selective

Monthly pending sales were nearly flat year over year in King County and slightly higher in Snohomish County.

Compared with August 2025:

• King County pending sales were down 0.4%.
  
  
• Snohomish County pending sales were up 1.8%.
  
  

That is an important contrast with the inventory data.

Inventory is much higher, but pending sales are not rising at the same pace.

That means buyers have more choices, but they are not absorbing all available inventory quickly.

This creates a more competitive environment for sellers.

It also creates more opportunity for buyers who are prepared, patient, and strategic.

Closed Sales Slowed

Closed sales were lower than last year in both counties.

• King County closed sales were down 15.4% year over year.
  
  
• Snohomish County closed sales were down 7.8% year over year.
  
  

This is another sign that the market has slowed from the pace of prior years.

More homes are available, but not every listing is converting into a sale. Buyers are comparing more carefully, watching payment levels, and responding most strongly to homes that are priced and presented well.

Homes Are Taking Longer To Sell

Market time continues to increase.

• King County homes averaged 37 days on market.
  
  
• Snohomish County homes averaged 36 days on market.
  
  

Compared with last year, days on market increased 12.1% in King County and 12.5% in Snohomish County.

The historical comparison is even more striking.

In August 2021, King County homes averaged 15 days on market, while Snohomish County homes averaged 12 days. In August 2022, King County averaged 20 days and Snohomish County averaged 21 days.

Today’s market is slower.

That does not mean homes are not selling.

It means the pace has changed.

Buyers are taking more time. Sellers are facing more competition. And the first few weeks on market are increasingly important.

A home that launches too high may miss its best window of buyer attention.

A home that launches well prepared, well priced, and well marketed can still stand out.

List-to-Sale Ratios Are Softer

Both counties are also seeing softer list-to-sale ratios.

In August 2026:

• King County list-to-sale ratio was 96.2%.
  
  
• Snohomish County list-to-sale ratio was 96.6%.
  
  

That is down from last year and dramatically different from August 2021, when both counties were above 104%.

This is another sign that buyers are negotiating more.

For sellers, list price needs to be strategic from the start.

For buyers, there may be room to negotiate, especially on homes that have been sitting, need work, or were priced too aggressively at launch.

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What This Means for Sellers

Sellers still have opportunity, but the market is less forgiving.

The homes that perform best are typically the ones that are:

• priced accurately from day one
  
  
• prepared before going live
  
  
• easy for buyers to understand
  
  
• professionally photographed and marketed
  
  
• positioned clearly against competing listings
  
  
• responsive to buyer feedback
  
  

The biggest mistake sellers can make right now is assuming that last year’s strategy will work in this year’s market.

More inventory means buyers have alternatives.

If a home is overpriced, poorly presented, difficult to access, or unclear in its value, buyers may simply move on.

What This Means for Buyers

Buyers have more leverage than they have had in several years.

More inventory can create:

• more homes to choose from
  
  
• less pressure to rush
  
  
• better ability to keep important protections
  
  
• more room to negotiate price, repairs, credits, or terms
  
  
• better odds of finding a home that fits both lifestyle and budget
  
  

That does not mean every home is easy to buy.

The best homes can still sell quickly and attract strong interest.

But overall, buyers have more room to be thoughtful and strategic than they did during the low-inventory market.

The latest pending data supports this. Buyers are still moving forward, but they are more likely to keep financing and inspection protections in place.

What This Means for Investors

For investors, rising inventory can create more opportunities, but higher rates continue to make the numbers more challenging.

The best opportunities may come from properties where the average buyer sees friction, such as:

• cosmetic updates
  
  
• longer days on market
  
  
• ADU or DADU potential
  
  
• strong rental locations
  
  
• properties that were overpriced initially
  
  
• sellers who value certainty and clean terms
  
  

This is not a market where every deal works.

But it is a market where disciplined investors may find opportunities that were harder to find when inventory was extremely low.

[Insert Graphic: Market Strategy Takeaways]

What We’re Watching Next

Over the next few months, we will be watching:

• whether inventory continues rising into fall
  
  
• whether mortgage rates remain near the upper-6% range
  
  
• whether pending sales remain stable
  
  
• whether sellers adjust pricing expectations
  
  
• whether days on market continue increasing
  
  
• whether buyer protections remain more common
  
  
• whether Snohomish County continues showing more price sensitivity than King County
  
  

The fall market will be important.

If inventory remains elevated and buyer activity slows further, sellers may need to become more flexible. If rates improve or buyers gain confidence, some of the current inventory could create opportunity for renewed activity.

Bottom Line

The September 2026 market update shows a more balanced housing market across King and Snohomish counties.

Inventory is much higher than last year. Buyers have more choices. Mortgage rates remain the biggest affordability challenge. Homes are taking longer to sell. And sellers need stronger pricing and preparation strategies.

At the same time, prices remain historically strong compared with pre-pandemic levels, and well-positioned homes are still selling.

This is a market that rewards thoughtful planning.

If you are thinking about buying, selling, investing, downsizing, or simply want to understand what your home may be worth in today’s market, Reece Homes would be happy to help you evaluate your options.