# 263 Prospect Avenue, Brooklyn

Apartment building · 147 units · built 2024 · Block 1053, Lot 20.

On Umarelli: https://umarelli.org/nyc/3010530020/263-prospect-avenue

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

## Building permits

- New Building — Large Residential, filed Jan 27, 2022, 144 units, 5 stories, described as “HUB FILING (SEE COMMENT SECTION) Filing herewith to erect a 5-story mix use building as per plans.”
- Alteration, filed Dec 5, 2024, estimated cost $5K, described as “Proposed installation of heavy duty sidewalk shed as per plans. Live load 300 lbs per square feet. Sidewalk shed shall comply with chapter #33 of the NYC building code. No change in use, occupancy, or egress under this application.”
- Alteration, filed Apr 29, 2022, estimated cost $9K, described as “Proposed installation of heavy duty sidewalk shed as per plans. Live load 300 per square feet. Sidewalk shed shall comply with chapter # 33 of the 2014 code. No change in use occupancy or egress under this application.”
- Alteration, filed Feb 4, 2022, estimated cost $5K, described as “Construction fence filed in conjunction with demolition application”
- Alteration, filed Nov 5, 2021, estimated cost $5K, described as “Standpipe removal”
- Alteration, filed Sep 22, 2021, estimated cost $10K, described as “Installation of temporary work platform as per drawings. Work platform shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Sep 21, 2021, estimated cost $10K, described as “Temporary shoring as per drawings. Shoring shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Sep 1, 2021, estimated cost $10K, described as “Installation of temporary overhead protection at adjacent property during bldg demolition, filed sep. Temporary overhead protection shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Aug 27, 2021, estimated cost $5K, described as “Installation of construction fence to protect site, during full demolition”
- Alteration, filed Aug 27, 2021, estimated cost $60K, described as “Installation of scaffold as per drawings. Scaffold shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Aug 26, 2021, estimated cost $25K, described as “Installation of heavy duty sidewalk shed during bldg demolition, filed sep. Sidewalk shed shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application. Sidewalk shed shall be installed on rdwy. Dot…”
- Alteration, filed Aug 26, 2021, estimated cost $5K, described as “Installation of temporary overhead protection at monument as per drawings. Temporary overhead protection shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Jul 7, 2021, estimated cost $15K, described as “Interior demolition and non structural element removal for 4 story structure excluding cellar. No structural work in scope.”
- No Work, filed Dec 20, 2018
- No Work, filed Dec 14, 2018
- No Work, filed Dec 11, 2018
- No Work, filed Dec 11, 2018
- No Work, filed Dec 11, 2018
- No Work, filed Dec 10, 2018

## Property taxes

- Assessment: $14,709,600
- 2026–27 tax: $1,829,727
- Market value (city estimate): $32,688,000
- Taxable value: $14,709,600
- Assessed land: $3,188,250
- Assessed improvements: $11,521,350

## Zoning

R6B: floor area ratio 3.46 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Jun 24, 2021: $22,500,000, sold with other lots

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

## Flood zone

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

## In the news

[After Delays, Apartments Replacing Grand Prospect Hall Near Completion](https://www.brownstoner.com/development/grand-prospect-hall-development-263-prospect-avenue-construction/), Brownstoner, Oct 6, 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