# 6409 20th Avenue, Brooklyn

Commercial · built c. 1931 · Block 5549, Lot 5.

On Umarelli: https://umarelli.org/nyc/3055490005/6409-20-avenue

More construction in Borough Park: https://umarelli.org/nyc/brooklyn/borough-park.md

Every lot on block 5549: https://umarelli.org/nyc/brooklyn/5549.md

## Building permits

- Alteration, filed Mar 8, 2024, estimated cost $994K, described as “Horizontal extension to an existing building at the 2nd floor. Obtain new C of O.”
- No Work, filed Apr 28, 2022
- Alteration, filed Apr 28, 2022, estimated cost $10K, described as “To file MS mechanical work in conjunction with DOB Now Build application job#B00605839-I1”
- Alteration, filed Oct 7, 2021, estimated cost $310K, described as “Change 1st floor use from commericial retail u.g. 6 to DAYCARE CENTER/SCHOOL FROM 2YEARS TO 6YEARS u.g. 3. Obtain new c of o.”
- Alteration, filed Jun 21, 2021, estimated cost $10K, described as “To file SP work in conjunction with dob now build application job# B00532377”
- Alteration, filed Jun 8, 2021, estimated cost $100K, described as “Renovation of an existing building proposed daycare center/school from 2 to 6 years U.G. 3 at 1st floor. Layout approved under Alt-CO job# B00605839. No change in use, egress or occupancy under this application.”
- Alteration, filed Jun 8, 2021, estimated cost $6K, described as “To file PL work in conjunction with dob now application job#B00532377.”

## Property taxes

- Assessment: $804,150
- 2026–27 tax: $81,259
- Market value (city estimate): $1,787,000
- Taxable value: $749,070
- Assessed land: $210,600
- Assessed improvements: $593,550

## Zoning

R5: floor area ratio 1.06 built, 1.50 allowed by base zoning.

## Recent sales

- Mar 28, 2023: $3,380,000
- May 20, 2021: $472,500

Open-market sales since 2016, from the Department of Finance’s sales files.

## 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