Mill Creek Housing Market Update: What Moved Between August and September 2026

September's NWMLS data for Mill Creek and Southeast Snohomish County, set against August, with October's mortgage rates factored in.

Updated October 2026 | By Mark Popach, real estate agent serving Mill Creek, at Popach & Co.

Mill Creek-area house prices ticked up in September 2026, but the rest of the data leaned the other way. Mill Creek listings fall in NWMLS map area 610, Southeast Snohomish, where the house median rose 5.2% to $1,104,500. In the same month, sellers listed more houses than in August and buyers wrote 16% fewer contracts. Supply now sits at 4.63 months. A year ago it was about 2.48.

Mill Creek Prices: August vs. September 2026

The Southeast Snohomish house median climbed from $1,050,000 in August to $1,104,500 in September. Don't read too much into that gain. Last year the same median rose 6.5% between August and September, so a late-summer bump looks normal for this area. Compared with September 2025, the median is down 9.8%.

Houses and condos together moved less, up 2.0% for the month to $1,000,000 and down 11.1% from September 2025. For the city itself, Zillow's most recent Mill Creek home value index, through August 31, reads $933,410, 3.6% lower than in August 2025. Across all of Snohomish County, the house median slipped 2.5% in September to $750,000, so Mill Creek's price gain didn't extend county-wide.

Information and statistics compiled and reported by the Northwest Multiple Listing Service, Snohomish County map-area breakout reports for August and September 2026. Change column calculated by Popach & Co.

Mill Creek Sellers Listed More Than Last September

Southeast Snohomish sellers put 178 houses on the market in September, up from 155 in August. That breaks from 2025, when new house listings here dropped 16.6% over the same two months, from 175 to 146. This September's count came in 21.9% above that.

Compared with a year ago, the backlog is much larger. Active house listings ended September at 389, almost 40% more than the 278 on the market a year earlier. At September's sales pace, that's 4.63 months of supply. NWMLS treats four to six months as balanced, so Mill Creek-area houses now sit inside that range.

Closings tell you how many deals actually finished. Southeast Snohomish closed 84 houses in September, down from 91 in August and 112 in September 2025. Active listings actually dipped slightly in September, so the slower pace of closings is what pushed months of supply up.

Mill Creek Buyers Pulled Back in September

Pending house sales in Southeast Snohomish fell from 100 in August to 84 in September. That's a 16% drop in one month, and it leaves contracts 26.3% below September 2025. Some fall slowdown is normal here; last year pendings slipped 9.5% over the same stretch. This year's drop was steeper.

Timing explains part of it. Rates rose each week from September 10 (6.76%) through October 1 (7.28%), per Freddie Mac. Many Mill Creek buyers were writing offers into a rising rate. The county as a whole saw house pendings fall 10.6% for the month, from 781 to 698. Mill Creek's area fell further.

I don't read this as buyers giving up on Mill Creek.

Prices here sit well above the county median, and a jump in rates hits a $1.1 million purchase harder than a $750,000 one. Buyers at the top of their budget feel it first.

How Mill Creek Compares With the Rest of Snohomish County

Mill Creek's area is the priciest in Snohomish County right now, and it carries the most supply. Its house median topped all six Snohomish map areas last month. Everett and Mukilteo, by contrast, held pending house sales almost exactly level with last year.

Information and statistics compiled and reported by the Northwest Multiple Listing Service, Snohomish County breakout report for September 2026.

Southwest Snohomish shows that falling contracts don't always mean loose supply. Its pendings fell further from a year ago than Mill Creek's, yet it ended September at 2.82 months of inventory. Mill Creek's extra supply comes from the listing surge, not just slower buying.

Mill Creek Condos and Townhomes

Southeast Snohomish condo prices jumped in September, but on only 20 sales. The condo median rose from $687,500 to $766,500, while condo contracts dropped from 23 to 14. Condo supply climbed to 5.55 months. With counts this small, a few sales at either end of the price range can swing the median by tens of thousands of dollars.

I'd treat the price gain as noise. The drop in pendings is the part to watch.

What 7.40% Means for a Mill Creek Payment

Freddie Mac's 30-year average read 6.95% on September 17 and 7.40% on October 15. That ties October 8 for the year's peak.

Assume 20% down on that area median. The monthly principal-and-interest payment runs about $5,849 at 6.95%, versus $6,118 at 7.40%. The difference is roughly $269 a month, or about $3,200 over a year. At Mill Creek prices, a nearly half-point move in rates costs more in real dollars than it does in most of the county.

Buying in Mill Creek This Fall

Mill Creek buyers have more choice and more time than they've had in a while. With supply now inside NWMLS's balanced range, you can tour several homes side by side and still have room to negotiate.

Use that room. With supply this high, it's fair to ask for repair credits or a seller-paid rate buydown. A buydown can soften the jump to 7.40%. Ask your lender to price one ahead of any bid.

Check the school assignment for any address you're serious about. Many Mill Creek homes feed Everett School District schools, including Henry M. Jackson High, but assignments vary by address. Confirm it with the district first. The local details are in our post on buying a home in Mill Creek, and you can browse what Popach & Co. currently has listed.

Selling in Mill Creek Before the Holidays

September's data asks Mill Creek sellers to price for the buyers who are still writing contracts. Those buyers now carry October's 7.40% rate into every offer. A launch price based on spring sales will likely sit.

Start from September's pending sales in your part of Southeast Snohomish, then look at the houses you'll compete with this month. Well-prepared homes priced to those pendings still sell here. Our step-by-step guide on how to sell your home in Mill Creek goes deeper on preparation. Real Broker LLC is Popach & Co.'s brokerage, and our Mill Creek pricing starts from the area's current NWMLS sales.

What to Watch in Mill Creek Through November

My focus is October's new-listing count. If Mill Creek sellers keep listing at September's pace while pendings stay near 84, supply could push past five months, and prices would likely soften. If sellers pull back for the holidays, the 389 houses already on the market should start to clear.

For now, Mill Creek's area gives buyers as much room on price as any part of Snohomish County.

That could change quickly once spring buyers and listings arrive, so fall is the window to use it.