Deer Park, WA Housing Market 2026: Median Home Price, Last 12 Months

If you invest in or around Deer Park, the number that matters is what homes actually close for, not what sellers are asking. Here is what Deer Park sale prices look like right now, built from the closings Resideline tracked over the last 12 months, as of September 2026.

The snapshot

• •Closings tracked, last 12 months: 226
• •Median sold price, last 12 months: $389,997
• •Median sold $/sqft, last 12 months: $252
• •Middle half of sales closed between: $359,000 and $458,995

What the numbers say

Resideline tracked 226 closed sales in Deer Park over the last 12 months, with a median closing price of $389,997. That median is the midpoint of what buyers actually paid, not what sellers hoped to get, which is why it moves differently from the asking prices you see on listing sites. The middle half of those sales closed between $359,000 and $458,995. That spread matters more than the headline median: where a specific property sits inside it decides whether the citywide number helps you or misleads you. These are the closings Resideline tracks and may differ from complete county or municipal records. 89% of the Deer Park closings we track here are single-family houses, so these figures primarily reflect that segment, and the citywide $/sqft figure primarily reflects that segment as well. Across the 223 closings with usable living area, the middle half sold between $216 and $277 per square foot.

Figures last updated September 6, 2026 from closings Resideline tracked.

Median home price in Deer Park, WA (September 2026)

The median home price in Deer Park is $389,997, measured across the 226 closed sales Resideline tracked over the last 12 months. The middle half of those sales closed between $359,000 and $458,995.

Where Deer Park sale prices land

Medians hide the shape of a market. The distribution above covers the closed sales Resideline tracked in Deer Park over the last 12 months that carry a usable sale date, trimmed to the 5th through 95th percentile, with the middle half of sales closing between $359,000 and $458,995. Among the 64 Washington markets with a published band, Deer Park's middle-half spread ($359,000 to $458,995) ranks 3rd from the narrowest. Where your target property sits inside that spread matters more than the citywide median. Measured as the ratio of the upper to the lower quartile, its middle-half spread ranks in the 2nd percentile of the 2,187 US markets in Resideline's national Market Watch set, on data as of September 4, 2026.

How long a sale takes here

• •Listed to under contract: a median of 36 days, across 162 Deer Park closings Resideline tracked in the last 12 months
• •Contract to closing: a median of 30 days, across 180 Deer Park closings Resideline tracked in the last 12 months

The Deer Park angle

Deer Park turned in 226 tracked closings over the last 12 months, a median closed sale price of $389,997, and a middle half of $359,000 to $458,995. Very few markets we track cluster as closely as that, which makes the median a strong opening estimate for a property resembling the local norm. The point worth testing before you rely on it is how much land is doing here, because tightly clustered prices can sit alongside large differences in acreage that a summary figure never separates out. Closing volume is close to typical for the markets we track, so the comparison you want is between closings that share the subject's lot as well as its house.

From market read to offer price

A market read is the backdrop. The decision still comes down to one property and one number: what it is actually worth and what you should pay. Every Resideline report opens with this same market snapshot for the subject's exact ZIP code, then gives you the property's value, the sold comps behind it, and a market rent estimate. Pricing a specific deal? The free ARV calculator and rental property calculator run the numbers in about a minute.

And we show our work. Every estimate is frozen while the home is for sale and graded against the real closing price after it sells. See the live accuracy dashboard for the receipts, or read how the Area Market Snapshot works.

Run any Deer Park address through Resideline and you will see the local market and the property's value together, in one report.

Cite this

Using these numbers? Please cite the source and the sample size:

Source: Resideline Market Watch
Market: Deer Park, WA
Geography: incorporated municipality, Census place 5317320
Data updated: September 2026
Analysis period: last 12 months
Tracked closings: 226
Median sold price: $389,997
Median sold $/sqft: $252 (223 qualifying)
Property mix: 89% houses
https://resideline.com/blog/deer-park-wa-housing-market

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<a href="https://resideline.com/blog/deer-park-wa-housing-market">
  <img src="https://resideline.com/images/embed/deer-park-wa.png" alt="Deer Park, WA home sale price distribution, last 12 months" width="1000" style="max-width:100%;height:auto">
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<p>Source: <a href="https://resideline.com/blog/deer-park-wa-housing-market">Resideline Market Watch</a></p>

The local market statistics in this report are calculated from closed sales tracked by Resideline. Transaction coverage may differ from complete county or municipal records.

Every local market figure on this page is computed from closed sales Resideline tracked in Deer Park over the last 12 months, and is refreshed when the data is.