309 Union St
Mount Vernon, WA 98273
— ba 6,848 sqft Built 1977 Lot 18,626 sqft multi_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2026 | $612,400 | $503,200 | $1,115,600 | $12,958 |
| 2025 | $612,400 | $503,200 | $1,115,600 | $11,607 |
| 2024 | $576,400 | $473,600 | $1,050,000 | $11,259 |
| 2023 | $576,400 | $473,600 | $1,050,000 | $11,423 |
| 2022 | $663,200 | $473,600 | $1,136,800 | $14,015 |
| 2021 | $462,400 | $280,800 | $743,200 | $9,863 |
| 2020 | $404,600 | $245,700 | $650,300 | $8,881 |
| 2019 | $346,800 | $175,500 | $522,300 | $6,353 |
| 2018 | $346,800 | $175,500 | $522,300 | $8,182 |
| 2017 | $289,000 | $175,500 | $464,500 | $7,395 |
| 2016 | $289,000 | $175,500 | $464,500 | $7,486 |
| 2015 | $319,100 | $188,100 | $507,200 | $8,476 |
| 2014 | $319,100 | $188,100 | $507,200 | $8,525 |
| 2013 | $319,100 | $188,100 | $507,200 | $8,690 |
| 2012 | $319,100 | $188,100 | $507,200 | $7,905 |
| 2011 | $354,500 | $209,000 | $563,500 | $8,143 |
| 2010 | $347,400 | $204,800 | $552,200 | $7,537 |
| 2009 | $297,900 | $115,200 | $413,100 | $5,195 |
| 2008 | $297,900 | $115,200 | $413,100 | $4,949 |
Property facts
Year built
1977
Property type
multi_family
Stories
—
Beds
—
Baths
—
Living area
6,848 sqft
Lot size
18,626 sqft
ZIP code
98273
City
Mount Vernon
Street
Union St
Coordinates
48.41533, -122.33264
Comparable properties nearby
Frequently asked questions
When did 309 Union St last sell?
No public-record sale is on file for 309 Union St.
What is the current tax assessment for 309 Union St?
The most recent total assessment for 309 Union St (year 2026) is $1,115,600 with $12,958 in property tax.
When was 309 Union St built?
309 Union St was built in 1977.
How does 309 Union St compare to others on Union St?
We do not currently track other properties on Union St.
What are the property facts for 309 Union St?
309 Union St is a — bath, 6,848 sqft, 18,626 sqft lot multi_family.
Is 309 Union St a flip candidate?
No — 309 Union St does not appear in our flips dataset.
Is 309 Union St a tax-appeal candidate?
No — 309 Union St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-0.5%
Implied 1-yr
-2.0%
2026 Q3
$540.1K
2026 Q4
$537.3K
ZIP 98273 — Median Price History + Forecast
Explore nearby
Geography