# 511 9th Avenue, Manhattan

Condominium · 108 units · built 2008 · Block 736, Lot 7501.

On Umarelli: https://umarelli.org/nyc/1007367501/511-9-avenue

More construction in Hudson Yards: https://umarelli.org/nyc/manhattan/hudson-yards.md

Every lot on block 736: https://umarelli.org/nyc/manhattan/736.md

## Building permits

- Alteration, filed Oct 21, 2026, estimated cost $70K, described as “Installation of non-load-bearing interior partitions in the cellar. Installation of an access stair connecting the cellar and the 1st floor. No change in egress, occupancy, or use under this application.”
- Alteration, filed Aug 6, 2026, estimated cost $182K, described as “Propose to perform an interior renovation of the 1st-floor commercial space to create an eating & drinking area. The existing sprinkler, plumbing, and mechanical system shall remain intact. No change in egress, occupancy, or use under this…”
- Alteration, filed Aug 7, 2022, estimated cost $30K, described as “Plumbing work at 1ST floor, 2ND floor and 2ND floor terrace as per plans filed herewith. No change to use, egress, or occupancy.”
- Alteration, filed Aug 7, 2022, estimated cost $21K, described as “Plumbing work at 1st floor, 2nd floor and 2nd floor terrace as per plans filed herewith. No change to use, egress, or occupancy.”
- Alteration, filed Jul 20, 2022
- Alteration, filed May 13, 2022, estimated cost $165K, described as “Propose to convert existing hotel room into residential dwelling units at 2nd, 3rd and 4th floors as shown on the plans such as removal non load bearing partition & cosmetic work. Plumbing work filed separately”
- Alteration, filed Jun 3, 2021, estimated cost $25K, described as “Propose to perform an interior renovation on first floor commercial space to install eating and dining space. Existing sprinkler. plumbing fixtures and the mechanical system shall remain intact.”

## Property taxes

- Assessment: $26,080,674
- 2026–27 tax: $2,771,267
- Market value (city estimate): $57,957,052
- Taxable value: $23,555,759
- Assessed land: $3,118,501
- Assessed improvements: $22,962,173
- Condo units with their own tax lots: 6

## Zoning

C1-7A: floor area ratio 9.74 built, above the 6.02 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Sep 1, 2026: $9,600,000, Unit HU, sold with other lots
- Oct 30, 2017: $80,500,000, Unit RU

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

- Extension to finish construction (Board of Standards and Appeals 155-12-BZY): Extension to finish construction, Granted, filed May 11, 2012, decided Aug 21, 2012. Extension of time (§11-332) to complete construction of a minor development commenced prior to a zoning text amendment related to parking. C1-7(A) Special Hudson Zoning District.

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