# 439 Knickerbocker Avenue, Brooklyn

Condominium · 14 units · built c. 1931 · Block 3289, Lot 7501.

On Umarelli: https://umarelli.org/nyc/3032897501/439-knickerbocker-avenue

More construction in Bushwick: https://umarelli.org/nyc/brooklyn/bushwick.md

Every lot on block 3289: https://umarelli.org/nyc/brooklyn/3289.md

## Building permits

- Alteration, filed Apr 14, 2022, estimated cost $36K, described as “4 rooftop split system condensing units on existing steel dunnage. All mechanical work filed under DOB #320939400. Filing to obtain certificate of compliance only. No change in use, egress or occupancy.”
- Alteration, filed May 7, 2019, estimated cost $6K, described as “Erect an illuminated business accessory wall sign. No change in use, egress or occupancy. Replacing permit #321543773.”

## Property taxes

- Assessment: $2,192,400
- 2026–27 tax: $194,454
- Market value (city estimate): $4,872,000
- Taxable value: $2,089,872
- Assessed land: $112,500
- Assessed improvements: $2,079,900
- Condo units with their own tax lots: 2

## Zoning

C4-3: floor area ratio 3.99 built, above the 3.40 base zoning allows, which bonuses, transfers or older rules can permit.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

From New York City and Jersey City public records, refreshed within a day of each release. Sources: https://umarelli.org/sources. Methodology and corrections: https://umarelli.org/methodology