623 Union Ave
Brooklyn, NY 11211
— ba 2,048 sqft Built 1910 Lot 1,517 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 |
|---|---|---|---|---|
| 2025 | $102,240 | $17,940 | $120,180 | $4,929 |
| 2024 | $102,240 | $17,940 | $120,180 | $5,008 |
| 2023 | $80,460 | $17,940 | $98,400 | $4,780 |
| 2022 | $84,360 | $17,940 | $102,300 | $4,434 |
| 2021 | $94,260 | $17,940 | $112,200 | $4,384 |
| 2020 | $95,880 | $17,940 | $113,820 | $4,436 |
| 2019 | $101,580 | $17,940 | $119,520 | $4,347 |
| 2018 | $16,052 | $3,563 | $19,615 | $4,103 |
| 2017 | $14,244 | $4,267 | $18,511 | $3,773 |
| 2016 | $12,030 | $5,434 | $17,464 | $3,491 |
| 2015 | $11,357 | $6,107 | $17,464 | $3,414 |
| 2014 | $11,261 | $6,056 | $17,317 | $3,317 |
| 2013 | $10,630 | $5,716 | $16,346 | $809 |
| 2012 | $7,723 | $7,703 | $15,426 | $2,808 |
| 2010 | $8,278 | $6,276 | $14,554 | $2,486 |
| 2009 | $8,399 | $6,155 | $14,554 | $2,465 |
| 2007 | $11,331 | $1,524 | $12,855 | $1,984 |
Property facts
Year built
1910
Property type
multi_family
Stories
2
Beds
—
Baths
—
Living area
2,048 sqft
Lot size
1,517 sqft
ZIP code
11211
City
Brooklyn
Street
Union Ave
Coordinates
40.71908, -73.95270
Comparable properties nearby
Frequently asked questions
When did 623 Union Ave last sell?
No public-record sale is on file for 623 Union Ave.
What is the current tax assessment for 623 Union Ave?
The most recent total assessment for 623 Union Ave (year 2025) is $120,180 with $4,929 in property tax.
When was 623 Union Ave built?
623 Union Ave was built in 1910.
How does 623 Union Ave compare to others on Union Ave?
We track 8 other properties on Union Ave. Browse the list under "Other properties on Union Ave" to compare beds, baths, and sale history.
What are the property facts for 623 Union Ave?
623 Union Ave is a — bath, 2,048 sqft, 1,517 sqft lot multi_family.
Is 623 Union Ave a flip candidate?
No — 623 Union Ave does not appear in our flips dataset.
Is 623 Union Ave a tax-appeal candidate?
No — 623 Union 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
+1.4%
Implied 1-yr
+5.6%
2026 Q2
$1.87M
2026 Q3
$1.9M
ZIP 11211 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Union Ave