# 105 Underhill Avenue, Brooklyn

Parking · built c. 1930 · Block 1153, Lot 5.

On Umarelli: https://umarelli.org/nyc/3011530005/105-underhill-avenue

More construction in Prospect Heights: https://umarelli.org/nyc/brooklyn/prospect-heights.md

## Building permits

- Alteration, filed Sep 10, 2026, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed 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 Mar 17, 2026, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed 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 Mar 4, 2026, estimated cost $1K, described as “Installation of temporary construction fence as per plans. No change in use, occupancy or egress.”
- Alteration, filed Mar 4, 2026, estimated cost $1K, described as “Proposed installation of temporary pipe scaffold as per plans. Work shall comply with chapter #33 of 2022 the NYC building code. No change in use, occupancy, or egress under this application.”
- Alteration, filed Nov 21, 2025, described as “Installation of temporary construction fence per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Major Renovation — Enlargement, filed Mar 24, 2025, estimated cost $10.3M, 21 units added, 5 stories, described as “Vertical and horizontal enlargement and renovation of existing building.”

## Property taxes

- Assessment: $1,256,850
- 2026–27 tax: $136,343
- Market value (city estimate): $2,793,000
- Taxable value: $1,256,850
- Assessed land: $181,800
- Assessed improvements: $1,075,050

## Zoning

R6B: floor area ratio 1.71 built, 2.00 allowed by base zoning.

## Recent sales

- Aug 2, 2024: $11,650,000, 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

[Demolition Progresses at 105 Underhill Avenue in Prospect Heights, Brooklyn](https://newyorkyimby.com/2026/06/demolition-progresses-at-105-underhill-avenue-in-prospect-heights-brooklyn.html), New York YIMBY, Jun 8, 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