King County Housing Market August 2026: More Inventory, Fewer Sales and a More Balanced Market

King County Housing Market August 2026: More Inventory, Fewer Sales and a More Balanced Market

King County's housing market became noticeably more balanced in August 2026, with 30% more active listings than a year ago, fewer pending and closed sales, a combined median sale price of $845,000, and 4.3 months of inventory. But that countywide number does not mean every buyer suddenly has the advantage or every seller faces the same level of competition.

The difference becomes clearer when we separate single-family homes from condos and then look at individual South King County market areas.

That is the main story this month: buyers generally have more choice, sellers have more competition, and local conditions matter more than the countywide headline.

Northwest MLS August 2026 market report

Key takeaways

• King County had 7,703 active residential and condominium listings in August, up about 30% from August 2025.
• 3,416 new listings came on the market, about 21% more than a year earlier.
• Pending sales declined to 2,101, down about 8.4% year over year.
• Closed sales fell to 1,791, down 13.6%.
• The combined residential and condo median sale price was $845,000, down 3.4% from August 2025.
• Months of inventory reached 4.30, compared with 2.9 a year earlier.
• Single-family homes remained tighter at 3.61 months of inventory.
• Condos had substantially more supply at 7.25 months.
• South King County conditions ranged from roughly 3.2 months in the Black Diamond/Maple Valley NWMLS area to more than four months in several Auburn, Kent, and Renton market areas.
• A more balanced market can create negotiating opportunities, but leverage still depends on the property, location, condition, price, and competition.

King County housing market at a glance

The August data shows supply growing faster than sales activity.

These figures combine residential homes and condominiums throughout King County. Information and statistics are compiled and reported by Northwest Multiple Listing Service.

View the Northwest MLS King County August 2026 breakout report

View the Northwest MLS August 2026 Market Snapshot

Is King County a buyer's market or seller's market in August 2026?

King County's combined market moved into what is commonly considered balanced territory in August, but it would be misleading to call the entire county a buyer's market.

Seattle King County REALTORS reports that four to six months of inventory is generally considered a balanced market. King County reached 4.3 months in August, up from 3.9 in July and 2.9 in August 2025.

Months of inventory estimates how long it could take to sell the current supply of listings at the recent sales pace.

In simple terms:

• very low inventory usually creates more competition among buyers,
• rising inventory gives buyers more alternatives,
• and higher inventory can increase pressure on sellers to compete on price, condition, presentation, and terms.

But 4.3 months is a countywide average.

The market looks quite different once we separate houses from condos.

King County looks balanced overall, but not every segment is balanced

Single-family homes remained tighter than the overall King County market in August, while condominiums had considerably more supply.

Northwest MLS reported 5,230 active single-family listings and 2,473 active condo listings across King County in August.

That difference matters.

A buyer shopping for a condo may encounter:

• more competing listings,
• sellers who have been waiting longer,
• price reductions,
• and more opportunities to discuss terms.

A buyer pursuing a well-priced detached home in a tighter local market may still face faster activity.

This is why saying simply:

"King County has 4.3 months of inventory"

does not tell the whole story.

What does 7.25 months of condo inventory mean?

It means King County's condo market had substantially more supply relative to its recent sales pace than the single-family market.

That does not mean every condo seller will struggle or every condo buyer can expect a large discount.

Building quality, HOA finances, location, monthly dues, condition, price, reserves, assessments, and financing can all change the amount of leverage on an individual unit.

Still, the difference between 3.61 months for houses and 7.25 months for condos is large enough that buyers and sellers should not use one strategy for both property types.

Are King County home prices falling?

The combined median sale price was lower than a year ago, but that does not mean every King County home lost 3.4% of its value.

The August combined median was $845,000, compared with $875,000 in August 2025.

For single-family homes alone, Northwest MLS reported a median of $920,000.

For condos, the median was $515,000.

A median is the middle sale price among transactions during a particular period.

It can move because of:

• which homes sold,
• where those properties were located,
• how many condos versus detached homes sold,
• property size,
• condition,
• and the price ranges where buyers were most active.

That is why we would not tell a homeowner:

"Your property is worth 3.4% less because the county median fell 3.4%."

A home's current value still needs to be measured against recent comparable sales in its own market.

Why did King County inventory rise while sales declined?

More homes were available in August, but buyer activity did not keep pace with the increase in supply.

Active listings grew 30% year over year while pending sales declined about 8.4% and closed sales declined 13.6%.

Financing costs are still part of that equation.

Freddie Mac reported that the average 30-year fixed mortgage rate was 6.66% on August 27, 2026, after staying in the mid to upper 6% range throughout August.

View Freddie Mac's mortgage rate archive

Higher borrowing costs can affect how much a buyer can comfortably spend each month, even when prices are softer or sellers have become more flexible.

That does not mean demand has disappeared.

It means buyers are often more selective about:

• price,
• property condition,
• monthly payment,
• repairs,
• HOA costs,
• commute,
• and whether the home feels worth the total cost.

Are pending and closed sales slowing?

Yes. Both pending and closed sales were lower than a year earlier in August.

King County recorded:

• 2,101 pending sales, down about 8.4% year over year
• 1,791 closed sales, down 13.6% year over year.

Closed sales were also lower than July, when King County recorded 2,022 closings.

That combination matters for sellers.

When listings are rising faster than completed transactions, homes have to compete harder for the available buyers.

The response should not automatically be:

"Cut the price."

The first question should be whether the home is positioned correctly against its actual competition.

Pricing, condition, presentation, access, updates, marketing, and seller flexibility all matter more as buyers gain alternatives.

How does South King County compare with the countywide market?

South King County remains a collection of different local markets rather than one uniform housing market.

Northwest MLS uses numbered market areas that can cross incorporated city boundaries. The numbers below therefore represent NWMLS market areas, not exact city-limit statistics.

These figures include residential homes and condos.

The differences help explain why countywide data should be treated as context rather than a pricing strategy for one house.

What stands out in Maple Valley and Black Diamond?

The Black Diamond/Maple Valley NWMLS market area remained tighter than King County overall in August, with 3.19 months of inventory.

Area 320 reported:

• 284 active listings
• 93 pending sales
• 89 closed sales
• a $739,000 combined median sale price
• 3.19 months of inventory.

Closed sales were also considerably higher than they were in August 2025 in this particular market area.

That does not mean every Maple Valley listing was competitive.

It does show why a buyer looking in Maple Valley may encounter a different environment than a buyer looking at condos in Seattle or a property in another South King County market with more supply.

Our recent analysis of why Maple Valley home prices can soften while homes are still selling quickly provides useful background for understanding that difference.

What does the August market mean for King County buyers?

Many King County buyers have more choices than they did a year ago, but the amount of negotiating power depends on the home they are pursuing.

More inventory can make it easier to:

• compare several properties,
• take condition more seriously,
• evaluate days on market,
• keep reasonable protections in an offer,
• and negotiate when a seller has clear motivation.

But the best homes can still attract quick interest.

Buyer versus seller implications

For a deeper look at negotiating in today's market, see our guide to South King County buyers having more negotiating power in summer 2026.

We also break down specific offer terms in what King County buyers can negotiate when more homes are available.

What does the market mean for King County sellers?

Sellers can still succeed in this market, but buyers have more alternatives and are less likely to overlook a weak price or poor presentation.

The August numbers point to three practical issues.

Pricing matters sooner

When buyers can compare several similar listings, an aggressive starting price can cause a home to sit while better-positioned properties sell.

The first two weeks on the market still matter because that is when a listing is newest to active buyers.

Condition becomes easier to compare

When inventory is low, buyers sometimes accept compromises because there are few alternatives.

When inventory rises, they can compare:

• roofs,
• flooring,
• kitchens,
• paint,
• landscaping,
• maintenance,
• major systems,
• and overall presentation.

The local market matters more than King County overall

A seller in the Black Diamond/Maple Valley market area should not automatically use the same strategy as a condo seller in Seattle.

A home can still receive strong interest when:

• the price matches current comparable sales,
• the condition fits buyer expectations,
• and the property stands out against nearby active listings.

For more on why neighboring South King County markets can move at different speeds, see South King County Real Estate Trends Explained: Fast vs. Slow Markets in 2026.

Has King County's housing market crashed?

No. August's data shows a slower and more balanced market, not evidence by itself of a housing crash.

Inventory is higher.

Sales are lower.

The median price is softer.

Those are real changes.

But the market is still recording thousands of listings, pending contracts, and completed transactions.

A more useful description is:

King County is moving away from the extremely supply-constrained conditions that gave sellers stronger leverage in previous periods.

That can be uncomfortable for sellers who remember hotter markets, but it can also make buying conditions more manageable for households that struggled when choices were limited.

Is now a good time to buy in King County?

It can be, if the right home, payment, and long-term plan line up. August's higher inventory improves the shopping environment, but it does not automatically make every property a good purchase.

Buyers should evaluate:

1. Monthly payment
2. Mortgage rate
3. Property taxes
4. Insurance
5. HOA dues if applicable
6. Home condition
7. Nearby comparable sales
8. Days on market
9. Competing listings
10. How long they realistically expect to own the property

The market does not have to reach a perfect bottom before a purchase can make sense.

The more useful question is whether the home works financially and practically for the buyer's situation.

Is now a good time to sell in King County?

Homes are still selling, but sellers should expect more competition than they faced a year ago.

August had 30% more active listings than August 2025 while closed sales were lower.

That means sellers should enter the market with realistic expectations rather than assuming older pricing strategies will still work.

The strongest starting questions are:

• What are similar homes actually selling for?
• How many comparable listings are available right now?
• How long are they taking to sell?
• Which listings are reducing their prices?
• What condition does the buyer expect at this price?
• How much inventory exists in this exact property category?

That analysis is more useful than a broad "buyer's market" or "seller's market" label.

Expert insight: Balanced does not mean equal

The biggest takeaway from August is that King County looks more balanced on paper, but the actual market is increasingly property-specific.

A condo buyer may see seven months of supply.

A buyer searching for a detached home sees closer to three and a half months.

A Black Diamond or Maple Valley buyer may encounter a tighter market than someone searching in Kent or Auburn.

Even within the same city, one well-priced home can receive immediate attention while another sits because buyers see better options nearby.

That is why we would not build a buying or selling strategy around the 4.3-month countywide number alone.

Use the county data to understand direction.

Use local comparable sales, competing inventory, property type, condition, and buyer activity to make the actual decision.

What should we watch in September 2026?

August moved King County into a more balanced position. The next question is whether that shift holds.

We will be watching four things closely.

1. Does inventory stay above four months?

If months of supply continues rising, buyers could gain more room in additional market segments.

If inventory begins falling seasonally, some seller leverage could return.

2. Do pending sales stabilize?

Pending contracts are one of the better indicators of current buyer activity because they reflect homes going under contract now rather than transactions that started weeks earlier.

3. Do prices continue softening?

One month does not establish a long-term price direction.

September data will help show whether August's lower median was part of a continuing pattern or partly related to the mix of properties that sold.

4. Does South King County remain tighter?

Maple Valley/Black Diamond remained below the countywide inventory level in August.

Watching Auburn, Kent, Renton, Maple Valley, and Black Diamond individually will tell us more than simply watching King County as a whole.

Frequently asked questions

What was the King County median home price in August 2026?

The median sale price for residential homes and condominiums combined was $845,000, down 3.4% from $875,000 in August 2025.

How many homes were for sale in King County in August 2026?

King County had 7,703 active residential and condo listings, about 30% more than the 5,925 active listings reported in August 2025.

How many homes sold in King County in August?

There were 1,791 closed residential and condominium sales, down 13.6% from August 2025.

How many King County homes went pending?

Northwest MLS reported 2,101 pending residential and condominium sales in August 2026, down about 8.4% from a year earlier.

How much inventory does King County have?

King County reached 4.3 months of inventory in August 2026, compared with 2.9 months one year earlier.

Is King County officially a buyer's market?

Not across the board. The combined market entered the commonly used four-to-six-month balanced range, but single-family homes had only 3.61 months of inventory while condos had 7.25 months.

Are King County home prices dropping?

The August median sale price was lower year over year, but that does not mean every home's value fell by the same percentage. Median prices are affected by the types and locations of homes sold during the month.

Is Maple Valley still competitive?

The NWMLS Black Diamond/Maple Valley market area remained tighter than King County overall in August, with 3.19 months of combined residential and condo inventory. Individual homes can still perform very differently depending on price and condition.

Are King County condos a buyer's market?

Condo buyers generally had more supply to choose from in August, with 7.25 months of inventory countywide. That suggests more buyer leverage overall, but an individual condo's location, HOA condition, price, and competition still matter.

Helpful resources

Northwest Multiple Listing Service August 2026 Market Snapshot

Current regional housing statistics, county charts, inventory data, sales activity, and median pricing.

View the August 2026 NWMLS Market Snapshot

Northwest MLS King County breakout report

Detailed August data for King County, including individual NWMLS market areas and separate residential and condominium statistics.

View the King County August 2026 breakout report

Northwest MLS August market update

NWMLS overview of rising inventory, slower sales, and softer prices across its Washington service area.

Read the Northwest MLS August market update

Seattle King County REALTORS August market report

King County-specific interpretation of August inventory, sales, prices, and the shift toward a more balanced market.

Read the August 2026 King County market report

Washington Center for Real Estate Research

University of Washington housing research, affordability data, quarterly market reports, and county-level housing information.

Explore Washington housing market research

Freddie Mac mortgage rate data

Weekly national mortgage-rate information that can help buyers understand the financing environment alongside local housing data.

View Freddie Mac's Primary Mortgage Market Survey

Planning your next move

If you are thinking about buying, selling, or planning your next move, our team is happy to help you think through your options and next steps.

📧 [email protected]
📱 (206) 960-4985

Honest. Effective. Reliable.