There are three numbers that come up every time a homeowner in Western North Dakota thinks about selling. The first is the county assessed value, which typically runs low and lags the market by years. The second is the Zestimate, which Zillow generates automatically and which most homeowners treat as gospel. The third is actual market value, what a qualified buyer will pay for your home right now based on real comparable sales, current inventory, and local demand conditions.
In Western North Dakota, the truth almost always lives somewhere between the assessed value and the Zestimate. And that gap matters more than most sellers realize.
Zillow Already Proved It Gets This Wrong
This isn't a theory. Zillow tested it themselves.
Between 2019 and 2021, Zillow ran an iBuying program called Zillow Offers, purchasing homes directly from sellers at prices their own algorithm generated. The program was built on the same Zestimate model that populates every listing page today. By late 2021, Zillow had accumulated thousands of homes purchased at prices the market wouldn't support, took a write-down of over $500 million, and shut the entire program down.
The company's own CEO acknowledged the algorithm couldn't accurately predict home prices even 90 days out. In dense, high-volume markets with consistent transaction data, the model performs adequately. In thinner, cyclical markets like the Bakken, it overestimates. Consistently.
A Real Example From Right Here in Williston
Here's a specific case that illustrates exactly how this plays out on the ground.
A home at 2304 27th Ave W in Williston was purchased for $305,000 five years ago. Based on current market conditions across the Bakken, a realistic market value today is approximately $380,000, reflecting genuine appreciation driven by local demand, inventory constraints, and the energy economy.
Zillow's current Zestimate on that same property: $457,100. Estimated sales range per Zillow: $430,000 to $485,000.
That is a $77,000 gap between what the market will realistically bear and what Zillow's algorithm is showing. If a seller lists at or near $457,000 expecting the Zestimate to hold up, they will sit. The home will accumulate days on market. Price reductions follow. And the final sale price will land well below where a correctly priced listing would have closed quickly and cleanly.
Overpriced listings don't just sit. They get stigmatized. Buyers start asking what's wrong with it.
Why the Bakken Breaks the Algorithm
Zillow's model is built on transaction volume and consistency. It needs a dense dataset of recent, comparable sales to self-correct. Western North Dakota's market is too thin and too cyclical to feed the algorithm what it needs.
The Bakken moves on energy activity. Rig counts, completion rates, workforce deployment, operator capital spend. These are the variables that drive housing demand here. When activity ramps, inventory tightens and prices firm. When it pulls back, values soften in ways that look irrational on a national comps sheet but make complete sense to anyone who has been executing transactions in this market for years.
Zillow has no variable for any of that. The algorithm doesn't know where the Bakken is in its cycle. It doesn't weight oil price trajectory, workforce housing pressure, or the fact that 16 active listings in Watford City means something entirely different than 16 active listings in a Minneapolis suburb.
The result is a valuation that looks precise to two decimal places and is wrong by tens of thousands of dollars.
The Three-Number Framework Every Western ND Seller Should Understand
When you're thinking about selling in this market, here is the framework that actually matters.
The county assessed value is a tax figure, not a market figure. It lags real conditions by years and is almost always the floor. Do not price from it.
The Zestimate is a national algorithm applied to a hyper-local market it was never calibrated for. In the Bakken, it runs high. Do not price from it either.
True market value is what comparable homes in your specific neighborhood have actually closed for in the last 90 to 180 days, adjusted for your home's condition, position, and the current absorption rate in your submarket. This is the number that gets your home sold at the right price in the right timeframe.
In our market right now, Williston is sitting at a $515,000 median list with a Market Action Index of 42 and climbing. Watford City is at $492,000 with only 16 active listings. Dickinson is at $360,000 with demand strengthening underneath a slight price ease. The underlying trend across all three markets favors sellers. But only sellers who are priced correctly capture that advantage. Sellers who price to a Zestimate in this market leave their listing exposed.
Why Local Expertise Is the Only Real Answer
With over 1,400 closed transactions and $400M+ negotiated across Western North Dakota, the data set Proven Realty operates from is not comparable to what any algorithm is working with. The team has closed deals through every cycle the Bakken has run since 2015, and that transaction history is what produces accurate valuations in a market where the inputs are local, cyclical, and consistently misread by outside tools.
A correct price in Western North Dakota isn't something an algorithm generates. It's something a broker who has been in this market every day for a decade produces from real data, real comps, and real knowledge of where demand is heading before the broader tools catch up.
If you're thinking about selling and you've been looking at your Zestimate, the conversation worth having is what your home is actually worth in today's Bakken market. Those two numbers are probably not the same.
Proven Realty is the #1 eXp team in North Dakota, recognized by RealTrends and Best of the Bakken 2023-2025. Erik Peterson, Founder and Broker, has negotiated $400M+ in transactions across Western North Dakota. For a current market valuation, contact the team at ProvenRealtyND.com.
