House Prices

House Prices & Home Values Union, WA 2026


Average Data

average house price$422,575
average size per house1796 ft²
average price per ft²236 $ / ft²

04/05/2026 - The value range (VR) for house prices in Union, WA is $234/ sqft to $234/ sqft. An average home with 1796 sqft costs approximately $420,264 to $420,264. Union, WA includes 1 ZIP codes and it is located in Mason county. The lowest prices are found in ZIP 98592, while the highest are in ZIP 98592. The average price per sqare feet is $236. Our analysis is based on 22 property listings.

Avergage prices by ZIP codes Union

98592231 $ / ft²




Historical development of home values in Union

Year Estimated value (USD) Change vs. 2025
2010 $196,251 -53.6%
2011 $188,662 -55.4%
2012 $188,154 -55.5%
2013 $195,187 -53.8%
2014 $204,893 -51.5%
2015 $215,409 -49.0%
2016 $226,650 -46.4%
2017 $238,883 -43.5%
2018 $252,090 -40.3%
2019 $263,779 -37.6%
2020 $277,415 -34.4%
2021 $315,530 -25.3%
2022 $367,837 -13.0%
2023 $387,901 -8.2%
2024 $410,342 -2.9%
2025 $422,575 0.0%

Graph: estimated home values in Union over time (USD)



Example: 100% financing house in Union

Loan amount: $422,575

Interest rate: 6.00%

Fixed monthly payment: $2,533.55

Breakdown in the 1st month:
Interest portion: $2,112.88  –  Principal portion: $420.68

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $25,213.34 $5,189.27 $417,385.73
2 $24,893.27 $5,509.33 $411,876.40
3 $24,553.47 $5,849.14 $406,027.26
4 $24,192.71 $6,209.90 $399,817.36
5 $23,809.70 $6,592.91 $393,224.45
6 $23,403.06 $6,999.55 $386,224.90
7 $22,971.34 $7,431.27 $378,793.63
8 $22,513.00 $7,889.61 $370,904.03
9 $22,026.38 $8,376.22 $362,527.80
10 $21,509.76 $8,892.85 $353,634.95
11 $20,961.27 $9,441.34 $344,193.61
12 $20,378.94 $10,023.66 $334,169.95
13 $19,760.71 $10,641.90 $323,528.05
14 $19,104.34 $11,298.27 $312,229.78
15 $18,407.49 $11,995.12 $300,234.65
16 $17,667.65 $12,734.96 $287,499.70
17 $16,882.19 $13,520.42 $273,979.28
18 $16,048.28 $14,354.33 $259,624.95
19 $15,162.93 $15,239.67 $244,385.28
20 $14,222.98 $16,179.62 $228,205.65
21 $13,225.06 $17,177.55 $211,028.11
22 $12,165.59 $18,237.02 $192,791.09
23 $11,040.77 $19,361.84 $173,429.25
24 $9,846.57 $20,556.04 $152,873.21
25 $8,578.72 $21,823.89 $131,049.33
26 $7,232.67 $23,169.94 $107,879.39
27 $5,803.60 $24,599.01 $83,280.38
28 $4,286.39 $26,116.22 $57,164.16
29 $2,675.60 $27,727.01 $29,437.15
30 $965.45 $29,437.15 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Union, WA


1500 sqft3900 sqft
Ø selling price$428,341$911,197
Ø fast selling$389,401$820,077
Ø high price sale$467,281$1,002,316

In 2026, houses in Union, WA will be offered at an average price of $236 per square foot. A 1,500 sqft home priced at $428,341 is 22.63% more expensive per square foot than a 3,900 sqft home priced at $911,197. Home prices in Union, WA vary significantly depending on the neighborhood and location. For a quick sale, a 2,700 sqft home should be listed at around $630,828. Sellers who can wait longer may achieve a higher price of up to $771,013.

FAQ – Home Values in Union

What is the median home value in Union in 2026?

In 2026, the typical home value in Union is about $422,575 for an average home size of 1796 square feet. This corresponds to an average price of roughly $236 per square foot.

What is the average cost per square foot in Union?

In 2026, homes in Union sell for an average of around $236 per square foot, with a typical range between $234 and $234 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in ?

The average home size in Union is about 1796 square feet, with an estimated 2026 value around $422,575.



Locations close to Union, WA

Vader, WA183 $ / ft²
Westport, WA202 $ / ft²
Winlock, WA183 $ / ft²
Toledo, WA216 $ / ft²
Tokeland, WA338 $ / ft²
Tenino, WA191 $ / ft²
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