# 400 Thatford Avenue, Brooklyn

Industrial · built c. 1930 · Block 3603, Lot 42.

On Umarelli: https://umarelli.org/nyc/3036030042/400-thatford-avenue

More construction in Brownsville: https://umarelli.org/nyc/brooklyn/brownsville.md

## Building permits

- Alteration, filed Jun 11, 2025, described as “Installation of temporary sidewalk shed per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Jun 11, 2025, described as “Installation of temporary supported scaffold per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Feb 21, 2025, estimated cost $25K, described as “Installation of Active Sub-Slab Depressurization System (SSDS) NYC OER Project Nos. 21 TMP 1253K, 21EH-A264K filed in conjunction with Alteration B01047985-I1”
- Major Renovation — Conversion, filed May 13, 2024, estimated cost $4.4M, 68 units added, 3 stories, described as “Conversion & 1-story vertical enlargement of 2-story manufacturing building, change into 68 class a dwelling units”
- Alteration, filed Jun 17, 2021, estimated cost $1K, described as “Fence application hereby filed in conjunction to alt #321600353.”

## Property taxes

- Assessment: $684,000
- 2026–27 tax: $65,042
- Market value (city estimate): $1,520,000
- Taxable value: $599,580
- Assessed land: $157,500
- Assessed improvements: $526,500

## Zoning

M1-4/R6A: floor area ratio 1.20 built, 3.00 allowed by base zoning.

## Recent sales

- May 10, 2024: $6,000,000
- Jan 31, 2020: $4,450,000, 16,740 sq ft ($266 per sq ft)
- Jan 31, 2019: $3,200,000

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

## Flood zone

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

## Board and land use applications

- 803 Rockaway Avenue Rezoning (City Planning P2017K0230): Completed, decided Feb 8, 2021. This is a private application for zoning map and zoning text amendments (MIH) to facilitate the development of a 7-story mixed use building, containing 174 units of supportive and affordable housing, 39,000 square feet of ground floor…

## In the news

[Permits Filed for 400 Thatford Avenue in Brownsville, Brooklyn](https://newyorkyimby.com/2026/03/permits-filed-for-400-thatford-avenue-in-brownsville-brooklyn.html), New York YIMBY, Mar 25, 2026.

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