509 Mountain Ave
Westfield, NJ 07090
5 bd 5 ba 3,516 sqft Built 1951 Lot 12,197 sqft single_family
Most recent sale
$630,000
Apr 21, 2022
Location
Timeline: Sale, Listing & Tax History
Recorded events
| Date | Event | Price | Source |
|---|---|---|---|
| May 31, 2023 | Sold | $1,585,000 | GardenState |
| Mar 24, 2023 | Listed | $1,649,900 | GardenState |
| Mar 22, 2023 | Price changed | $1,649,900 | GardenState |
| Jan 13, 2023 | Listed | $1,699,900 | GardenState |
| Apr 21, 2022 | Sold | $630,000 | MLS #3761509 |
| Feb 1, 2022 | Listed | $595,000 | MLS #3761509 |
| Nov 1, 1983 | Sold | $109,000 | Public Record |
| Apr 1, 1983 | Sold | $100,500 | Public Record |
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $770,200 | $478,800 | $1,249,000 | $28,627 |
| 2024 | $770,200 | $478,800 | $1,249,000 | $28,127 |
| 2023 | $82,400 | $478,800 | $561,200 | $12,380 |
| 2022 | $82,400 | $478,800 | $561,200 | $12,121 |
| 2021 | $82,400 | $478,800 | $561,200 | $12,138 |
| 2020 | $82,400 | $478,800 | $561,200 | $12,110 |
| 2019 | $82,400 | $478,800 | $561,200 | $12,065 |
| 2018 | $83,300 | $65,500 | $148,800 | $13,833 |
| 2017 | $83,300 | $65,500 | $148,800 | $13,758 |
| 2016 | $83,300 | $65,500 | $148,800 | $13,435 |
| 2015 | $83,300 | $65,500 | $148,800 | $13,167 |
| 2014 | $83,300 | $65,500 | $148,800 | $12,732 |
| 2013 | $83,300 | $65,500 | $148,800 | $12,176 |
| 2012 | $83,300 | $65,500 | $148,800 | $11,698 |
| 2011 | $83,300 | $65,500 | $148,800 | $11,253 |
| 2010 | $83,300 | $65,500 | $148,800 | $10,821 |
| 2009 | $83,300 | $65,500 | $148,800 | $10,288 |
| 2008 | $83,300 | $65,500 | $148,800 | $9,923 |
| 2007 | $83,300 | $65,500 | $148,800 | $9,416 |
Property facts
Year built
1951
Property type
single_family
Stories
—
Beds
5
Baths
5
Living area
3,516 sqft
Lot size
12,197 sqft
ZIP code
07090
City
Westfield
Street
Mountain Ave
Coordinates
40.66024, -74.35049
Comparable properties nearby
Investment analysis
Estimates based on local averages — not personalized adviceEstimated monthly rent
$5,274
Gross rental yield
10.05%
Implied cap rate
6.53%
Trend-extrapolated value
—
Frequently asked questions
When did 509 Mountain Ave last sell?
509 Mountain Ave most recently sold on Apr 21, 2022 for $630,000.
What is the current tax assessment for 509 Mountain Ave?
The most recent total assessment for 509 Mountain Ave (year 2025) is $1,249,000 with $28,627 in property tax.
How does 509 Mountain Ave's assessment compare to its last sale price?
The current assessment is 98.3% above the last sale price of $630,000.
When was 509 Mountain Ave built?
509 Mountain Ave was built in 1951.
How does 509 Mountain Ave compare to others on Mountain Ave?
We track 8 other properties on Mountain Ave. Browse the list under "Other properties on Mountain Ave" to compare beds, baths, and sale history.
What are the property facts for 509 Mountain Ave?
509 Mountain Ave is a 5 bed, 5 bath, 3,516 sqft, 12,197 sqft lot single_family.
Is 509 Mountain Ave a flip candidate?
Yes — 509 Mountain Ave appears in our flips dataset, indicating it sold twice within a short window with a notable price change.
Is 509 Mountain Ave a tax-appeal candidate?
No — 509 Mountain Ave is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
+1.2%
Implied 1-yr
+4.7%
2026 Q3
$1.37M
2026 Q4
$1.38M
ZIP 07090 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Mountain Ave