In August 2026, Bellevue west of I-405 had 160 houses and other residential properties for sale. East of the freeway there were 163. That's almost the same supply. The west side went pending on 24 of them in August. The east side went pending on 71.
Both sides had about the same number of homes on offer, yet the east side signed close to three times as many deals. For anyone buying in Bellevue this fall, that gap matters more than any citywide median. It tells you how hard you can push on price, how long a seller has probably been waiting, and how a move from one side of the city to the other should be sequenced.
How the listing service splits the city
The Northwest Multiple Listing Service doesn't report Bellevue as one market. It divides the city into map areas, and two of them sit on either side of the freeway: area 520, "Bellevue-West of 405," and area 530, "Bellevue-East of 405." These labels are the listing service's own. They aren't neighborhood names. The data published for each area shows they behaved like two different markets all summer.
Here is the residential side of the NWMLS King County breakouts for August 2026:
| August 2026, residential | West of 405 (area 520) | East of 405 (area 530) |
|---|---|---|
| Active listings | 160 | 163 |
| Pending sales | 24 | 71 |
| Closed sales | 23 | 46 |
| Median sale price | $3,135,000 | $1,647,500 |
| Change in median vs. August 2025 | down 15.84% | up 7.86% |
| Months of inventory | 6.96 | 3.54 |
Months of inventory is a rough measure of how long it would take to sell everything currently listed at the current pace. Near seven months, buyers have room to wait and negotiate. Near three and a half, buyers still face competition. For context, residential homes across the whole Eastside ran 4.24 months of inventory in August, with a median of $1,445,721. An Eastside-wide average lands between Bellevue's two halves and describes neither of them.
Three months of the same split
One month of data could be noise. This gap held through the summer.
- June 2026: With condos and houses combined, the west side ran 7.20 months of inventory at a $3,100,000 median. The east side ran 3.36 months at $1,470,000.
- July 2026: In residential alone, the west side had 158 active listings, 25 pending sales, and 7.52 months of inventory, with the median down 23.22% from a year earlier. The east side had 186 active, 42 pending, and 3.72 months, with the median up 6.75%.
- August 2026: West of the freeway, 6.96 months and a median down 15.84%. East of it, 3.54 months and a median up 7.86%.
August is the latest complete month the listing service has published. Its figures came out September 3. The September numbers may move things, but three straight months make a pattern. Through the whole summer, the east side went through its inventory about twice as fast as the west side.
Why the pending count is the number to watch
The year-over-year medians in that table move a lot, and that's partly because so few homes sold. In August, the west-side median came from 23 closings and the east-side median from 46. With samples that small, the median shifts depending on which homes happened to close that month. A few waterfront sales one month and a few interior lots the next can move it by hundreds of thousands of dollars even if no individual home's value changed.
The condo figures show the problem clearly. West-side condos had 10.42 months of inventory in August, the loosest figure for either property type on either side of the freeway. Yet their median rose 17.02% year over year, to $1,117,500, on only 12 closings. East-side condos posted a 23.04% median gain, to $607,500, on 18 closings, while carrying 6.50 months of inventory. Condo prices aren't really climbing that fast in a market with that much unsold supply. More likely, the mix of units that happened to close was more expensive this August than last.
Inventory and pending counts are harder to skew. They count every listing, not only the few that closed. In August they showed condos slow on both sides of the freeway, east-side houses moving at a steady pace, and west-side houses moving slowly. Across the whole Eastside, condos ran 6.81 months of inventory and the condo median fell 12.20% from a year earlier.
What is weighing on the west-side price tier
When the typical home on one side of the freeway closes above $3 million and the typical home on the other side closes around $1.6 million, the gap mostly reflects how the top of the market is doing.
That top tier slowed across the region this year. On September 7, The Seattle Times ran a Bloomberg report finding that Seattle-area luxury homes are sitting longer. In the top 5% of the local market, pending sales were down 15% year over year in the three months through July. Nationally, luxury pending sales rose 2.6% over the same period. In the six most expensive suburbs, including Bellevue and Sammamish, homes priced over $2 million averaged 44 days on market in the first half of 2026. That compares with 25 days in the first half of 2025 and nine days in 2022.
The report points to two pressures that hit at the same time. Microsoft, Amazon, and Meta have cut thousands of jobs in the region. Washington also passed its first income tax in modern state history this year, a 9.9% tax on households earning more than $1 million a year. GeekWire reported that Microsoft's July 2026 cuts alone came to 4,800 jobs. Neither source shows how much of Bellevue's split comes from either factor. Still, both press hardest on buyers in the price range where west-of-405 homes trade. Homes in the mid-$1 million range rely on a broader pool of buyers, which helps explain why the east side kept pace.
When a move crosses the freeway
The split creates the most friction for people who are selling on one side of I-405 and buying on the other, which is common for families moving within Bellevue. The two halves move at different speeds, so the order of the sale and the purchase matters.
Selling east, buying west. At about three and a half months of inventory, the sale is the part most likely to go quickly. At about seven months, the purchase allows more time and room to negotiate. This order is the easier one. A buyer holding a signed sale may be able to ask a west-side seller who has been on the market for a while for terms that would be harder to get on the other side of the freeway.
Selling west, buying east. This order is harder. The home most likely to sit is the one that has to sell, and the target home is in the faster market. A buyer whose offer depends on a sale that hasn't happened yet is competing against buyers with no such condition, in the area that wrote 71 pending sales in August. Downsizers often face this exact problem. They need a realistic sale timeline and a plan for the gap before they make an offer.
Staying on one side. On the west side, a buyer can usually take time with inspections, design review, and price negotiation, because few other buyers are competing for the same house. East of the freeway, the pace is closer to balanced, but at 3.54 months of inventory in August, the best-presented homes still face real competition.
For the move-up buyer and the downsizer, the right strategy is close to opposite. Two sellers can make the same short drive across the same freeway and need two different plans.
A few questions this raises
Does "west of 405" mean the same thing as a specific neighborhood? No. The listing service publishes the areas under these labels without listing the neighborhoods inside each one. Any analysis at the level of a single street or enclave needs data from actual comparable sales.
Is the west side's 15.84% median drop a 15.84% drop in home values? Not necessarily. That median comes from 23 closings in August 2026, so it moves with the mix of homes that sold. Months of inventory and pending sales are more reliable signals that west-side demand has slowed.
When will newer numbers be available? The listing service published August figures on September 3, 2026. September figures hadn't been posted as of early October, so any decision made this month should be checked against them once they come out.
If your next move crosses I-405 in either direction, the order of the sale and the purchase matters as much as the price. Mary Nelson can walk you through both sides of the freeway and help you plan the timing before you list or make an offer. Let's Connect.
This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.
