08/10/2026
Your Zestimate moved $8,000 last week. Nothing about your house changed. The algorithm did.
A Zestimate is software reading public records and past sales. Zillow publishes its own accuracy data, and the gap is the part worth knowing: for homes actively listed, the nationwide median error runs around 2%. For off-market homes — which is what you’re looking at if your house isn’t listed — it’s roughly 7%. And “median” means half the misses are bigger than that.
Here’s what routinely falls through the cracks in the Rogue Valley 👇
📍 Acreage and how it’s actually used. A model sees five acres. It doesn’t see that two of them are a slope you can’t build on, and the flat fenced part is prime for a shop and a garden.
📍 River and creek frontage. “Waterfront” isn’t a clean database field. The algorithm can’t tell a seasonal creek in a culvert from year-round river frontage — or weigh floodplain the way a lender will.
đź“Ť Well and septic condition. A huge share of homes out here run on both. Software has no idea whether the well produces plenty or barely keeps up.
📍 Updates the county never recorded. New kitchen, heat pump, finished bonus room — if it didn’t change the tax record, the model is valuing a version of your home from a decade ago.
And the real problem: automated models work best where fifty near-twin homes sold last quarter. Grants Pass is the opposite of that. When true comps are thin, the estimate drifts.
Use the Zestimate the way it’s meant to be used — a free ballpark, not a price. Before you list, refinance, or plan a move, get a number from someone who has actually watched homes like yours sell in your corner of the county.
Want that number? Give me a call and I’ll put together a complimentary market analysis — no cost, no obligation. Sometimes it confirms the Zestimate. Often it tells a very different story.
Full breakdown is on the blog — link in bio.
