# 25 11th Avenue, Manhattan

Commercial · built c. 1900 · Block 662, Lot 3.

On Umarelli: https://umarelli.org/nyc/1006620003/25-11-avenue

More construction in Chelsea: https://umarelli.org/nyc/manhattan/chelsea.md

Every lot on block 662: https://umarelli.org/nyc/manhattan/662.md

## Building permits

- Alteration, filed Sep 11, 2026, estimated cost $400K, described as “Temporary Installation in Auditorium at 3RD FL to be removed after event”
- No Work, filed Sep 8, 2026, described as “Keynote presentation and breakout sessions.”
- Alteration, filed Aug 13, 2026, estimated cost $72K, described as “Installation of mechanical piping for new walk-in refrigerator as per plans filed herewith. No existing building materials are to be disturbed by the proposed work. No change to use, egress, or occupancy.”
- Alteration, filed Aug 13, 2026, estimated cost $9K, described as “Installation of new sprinkler heads for new walk-in refrigerator room as per plans filed herewith. No change to use, egress, or occupancy proposed.”
- Alteration, filed Feb 27, 2026, estimated cost $300K, described as “Temporary Installation in Auditorium at 3RD FL to be removed after event”
- Alteration, filed Jan 28, 2026, estimated cost $150K, described as “Replacement of lighting in existing ceilings as per drawings filed herewith. No change in use, egress, or occupancy.”
- Alteration, filed Jan 12, 2026, estimated cost $119K, described as “Installation of new non-bearing partitions, new office front and doors, installation of new ceiling and finish as per drawings filed herewith. No change in use, egress or occupancy.”
- No Work, filed Sep 10, 2025, described as “Keynote and breakout sessions”
- Alteration, filed Aug 27, 2025, estimated cost $150K, described as “Temporary Installation in Auditorium at 3RD FL to be removed after event”
- Alteration, filed Aug 18, 2025, estimated cost $22K, described as “Filing for installation and relocation of sprinkler heads and related piping as per plans filed herewith. No change to use, egress, or occupancy.”
- Alteration, filed Aug 18, 2025, estimated cost $95K, described as “Addition of short runs of ductwork and piping to serve phone rooms. No change to use, egress, or occupancy.”
- Alteration, filed Aug 15, 2025, estimated cost $381K, described as “Demolition of interior millwork and finishes per indicated scope. Installation of new non-bearing partitions, new office front and doors, installation of new ceiling andfinish as per drawings filed herewith. No change in use, egress or…”
- Alteration, filed Jul 16, 2025, estimated cost $175K, described as “Rebalancing of existing precipitator and additions to associated ductwork as per plans filed herewith. No change in use, egress, or occupancy.”
- No Work, filed Jun 23, 2025
- No Work, filed Jun 23, 2025
- Alteration, filed May 5, 2025, estimated cost $1.6M, described as “Corridor niche renovations to create additional phone rooms on 2nd and 4th floor. No change to use, egress, or occupancy.”
- Alteration, filed May 5, 2025, estimated cost $110K, described as “Addition of short runs of ductwork to serve phone rooms. No change to use, egress, or occupancy.”
- Alteration, filed Apr 14, 2025, estimated cost $275K, described as “Temporary Installation in Auditorium at 4TH FL to be removed after event”
- Alteration, filed Dec 9, 2024, estimated cost $1K, described as “Filing for construction of temporary structure of plywood, aluminum, and laminate as per plans filed herewith. No changes to use, egress, or occupancy.”
- Alteration, filed Sep 19, 2024, estimated cost $998, described as “The project referenced by this submittal consists of an indoor temporary plywood structure that is bolted to a stage and rigged to a pipe structure.”
- No Work, filed Sep 19, 2024, described as “Keynote session in Horizon Hall with custom stage build and seating layout. Furniture for speaker holding space in West pre-function, demos and furniture throughout the North & South pre-function and lastly food and beverage stations in…”
- Alteration, filed Sep 19, 2024, estimated cost $1K, described as “Filing for installation of temporary structure consisting of TV monitors mounted steel piping and aluminum truss.”
- No Work, filed Sep 6, 2024, described as “Keynote and breakout sessions.”
- Alteration, filed Aug 28, 2024, estimated cost $150K, described as “Temporary Installation in Auditorium at 4TH FL to be removed after event”
- Alteration, filed Apr 15, 2024, estimated cost $250K, described as “Temporary Installation in Auditorium at 4TH FL to be removed after event”

66 more, older permits are in this building’s full list on the map: https://umarelli.org/nyc/1006620003/25-11-avenue.

## Property taxes

- Assessment: $80,730,900
- Market value (city estimate): $179,402,000
- Taxable value: $0
- Assessed land: $22,098,600
- Assessed improvements: $58,632,300

## Zoning

M1-5: floor area ratio 1.21 built, 5.00 allowed by base zoning.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 12 ft (NAVD88).

## Board and land use applications

- Pier 57 cert, mini mod and subst comp (City Planning P2015M0028): Completed, decided Dec 17, 2015. This is a Certification pursuant to ZR 62-811 to reflect the reallocation and addition of floor area to include office space. This also includes Minor modification and substantial compliance of special permits pursuant to ZR 62-834 and ZR…
- PIER 57 (City Planning P2012M0280): Completed, decided Oct 29, 2013. This is a private application for a zoning map amendment, a Chair Certification, and three special permits to facilitate the reuse of Pier 57 as an indoor marketplace, culinary school and headquarters for the Tribeca Film Festival. The…

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