Pull up Mill Creek on four different home-value sites this summer and you get four different cities. Redfin's three-month window ending in May 2026 showed a median sale price of $854,000, down 22.5 percent from the year before. A few weeks later, the same company's own numbers for early June put the median at $937,016. Zillow's July estimate landed at $967,807, essentially flat year over year. Movoto's June figure was $900,000, on homes that took 26 days to sell instead of last year's 17. A market report built directly from Northwest Multiple Listing Service closings pegged the median at $975,000 for June, up 7.4 percent from a year earlier.
That is not four platforms disagreeing about rounding. That is a 22-point swing in the reported direction of the same market inside the same season. If you are watching Mill Creek because you own here, sold recently, or are weighing whether to list, that spread is the actual story: not which number is right, but why the city produces numbers this unstable in the first place. The answer sits partly in how few homes change hands here each month, and partly in a zoning vote the City Council took three weeks ago that is about to make the mix even harder to read.
None of the Four Numbers Is Wrong
Mill Creek sold somewhere between 44 and 78 homes in a typical month this spring and summer, depending on which count you use. That is a small enough sample that a single week of closings can bend the median hard in either direction. Sell four estate homes off the golf course at the Mill Creek Country Club in the same week that three modest attached units close near Town Center, and the median jumps. Reverse the mix the following month, and it falls just as fast, with no actual change in what buyers are willing to pay for any specific type of home.
This is why a report built from three months of Redfin data can show a 22.5 percent decline while a report built from NWMLS closings the same summer shows a 7.4 percent gain. Different windows, different weeks, different luck of which fifty or so houses happened to close. The city's own housing stock makes this worse than it would be somewhere with a more uniform product: Mill Creek runs from golf-course single-family homes in Fairway and Country Club Estates, priced north of $900,000, down to Town Center-adjacent condos and townhomes in Amberleigh and Pembrook that start closer to $600,000. A citywide median blends both pools every month in whatever ratio happened to close, which means the headline number is really a mix-shift indicator wearing a market-trend costume.
What Changed on September 1
That instability is about to get a new source of noise. On September 1, 2026, the Mill Creek City Council voted 5-2 to approve the South Town Center Subarea Plan, a rezone that opens roughly 82 acres immediately south of the existing Town Center to new housing, retail, and office space. Council members John Steckler and Vince Cavaleri voted against it. The area runs east-west from North Creek to Bothell-Everett Highway and north-south from City Hall North to the QFC on 164th Street.
The city's own announcement frames the plan as groundwork for more than 5,000 new homes and more than 1,000 jobs through 2044. Planning director Jeff Ryan told The Herald that the city owns only two parcels in the study area, so the real work now shifts to whether private property owners and developers actually build to the new zoning over the coming years. Mayor Stephanie Vignal called it an exciting step for the city in the council's own release.
That framing matters for anyone reading a Mill Creek price chart going forward. This was not a rubber stamp on a single project. It was the legal groundwork for a wave of attached housing product in a city that has, until now, offered very little of it.
Why the City Said Yes
The plan didn't materialize out of nowhere. Planning staff have pointed to a specific supply gap driving the push: as of mid-2025, no new multifamily housing had been completed or was under construction anywhere in the South Town Center study area, while the newer multifamily buildings that do exist in Mill Creek were running at 97.8 percent occupancy. That is close to full. Demand for attached housing in this city has had almost nowhere to go for years.
The zoning framework that emerged from the planning process, known during deliberation as Alternative 3a, allows buildings up to 85 feet by right along the Main Street commercial corridor and up to 85 feet elsewhere in the district if developers deliver public benefits: family-size units, shared parking arrangements, public open space, or land contributed toward a planned central park. Staff proposed a parking standard of one stall per residential unit plus three stalls per 1,000 square feet of commercial space, a compromise between the city's older parking minimums and a state law that caps how much parking cities above 30,000 residents can require. Mill Creek sits around 22,000 people now, close enough to that threshold that staff flagged it as something future growth could trigger.
The plan also commits to preserving and improving the North Creek Trail as a protected greenbelt feature running through the district, which matters for anyone weighing a South Town Center address against the trail access that already draws buyers to the east side of the original community.
The Mix Problem Is About to Get Worse
None of this changes what a home in Fairway or on the golf course is worth tomorrow. It does mean that the citywide median you see on any portal is going to become a less reliable stand-in for what's happening in any one part of Mill Creek. As South Town Center redevelops over the next several years, a wave of new attached product, priced and financed differently than the existing Town Center condo stock in Amberleigh or Pembrook, will start closing alongside the golf-course estates and the family homes in Silver Crest and Sweetwater Ranch. Every one of those closings gets folded into the same single median that already swings 22 points depending on which three months you check.
If you're selling a golf-course home in the next year or two, the citywide number tells you almost nothing about your own comp set, and that was already true before September 1. If you're watching Mill Creek as a buyer priced out of the country club neighborhoods, the South Town Center approval is the closest thing to a signal that more attached inventory is coming, even if it takes years to show up as finished units.
How to Read a Mill Creek Comp From Here
The practical fix is the same one that should have applied before this vote: stop reading the citywide median as a single market and start asking what specific product actually closed. A Fairway estate home and an Amberleigh condo are not competing for the same buyer, and they should not be averaged into one number that gets reported as "the Mill Creek market." Ask for closings filtered to your housing type and your part of the city, not just the incorporated limits, since the 98012 mailing area extends well beyond city boundaries into unincorporated Snohomish County with different jurisdiction and services.
That gets harder, not easier, once South Town Center starts delivering units, because the city will then have a genuinely new category of housing competing in the same market for the first time. Buyers and sellers who track the district's progress, rather than the citywide median, will have a real advantage in pricing conversations over the next several years.
If you're trying to figure out what your Mill Creek home is actually worth against the right comparables, or you want to understand how the South Town Center rezone might affect your specific street or building type, Jenell Steltz can walk through the comps that actually apply to your property instead of the citywide number making headlines this month.
