# 328 12th Street, Brooklyn

Three-family · built c. 1899 · Block 1029, Lot 29.

On Umarelli: https://umarelli.org/nyc/3010290029/328-12-street

More construction in South Slope: https://umarelli.org/nyc/brooklyn/south-slope.md

## Building permits

- Alteration, filed Sep 24, 2025, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed and pipe scaffold as per plans. No change in use, egress or occupancy.sidewalk shed shall comply with chapter #33 of 2022 the NYC building code.live load 300PSF.”
- Alteration, filed Sep 19, 2024, estimated cost $1K, described as “Installation of plywood construction fence as per plans filed herewith”
- Alteration, filed Apr 12, 2023, estimated cost $30K, described as “Propose Temporary Shoring and Stabilization of interior of existing 3-sty masonry and cellar building as per plan. There is no change in use, egress or occupancy.”
- Alteration, filed Jul 26, 2022, estimated cost $40K, described as “Propose Foundation work for vertical and horizontal extension to existing 3-story residential building filed in conjunction with Alt-CO-NB # B00562773-I1.”
- Alteration, filed Jul 26, 2022, estimated cost $30K, described as “Proposed SOE work for vertical and horizontal extension to existing 3-story residential building filed in conjunction with Alt-CO-NB # B00562773-I1.”
- Alteration, filed Dec 11, 2021, estimated cost $8K, described as “Temporary construction fence”
- Alteration, filed Oct 26, 2021, estimated cost $296K, described as “Propose structural work in conjunction with Alt-CO-NB # B00562773-I1.”
- Alteration, filed Sep 22, 2021, estimated cost $62K, described as “Propose mechanical scope of work filed in conjunction with Alt-CO-NB # B00562773-I1.”
- Alteration, filed Sep 22, 2021, estimated cost $192K, described as “Propose plumbing work filed in conjunction with alt-co B00562773-I1 for vertical and horizontal enlargement of existing 3-story residential building.”
- Major Renovation — Multi-Family, filed Aug 24, 2021, estimated cost $1.4M, 3 units in all, 3 stories, described as “Propose gut renovation with vertical and horizontal extension to existing 3-story residential building to convert to a three (3) stroy and penthouse, three (3) family dwelling”
- Alteration, filed May 14, 2019, estimated cost $2K, described as “Installation of new plywood construction fence. There is no change in use, means of egress, or occupancy under this application.”

## Property taxes

- Assessment: $187,800
- 2026–27 tax: $7,855
- Market value (city estimate): $3,130,000
- Taxable value: $39,584
- Assessed land: $21,840
- Assessed improvements: $165,960

## Zoning

R6B: floor area ratio 1.14 built, 2.00 allowed by base zoning.

## Recent sales

- Dec 29, 2023: $1,775,000
- Mar 22, 2021: $1,100,000

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

## Flood zone

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

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