# 112 11th Avenue, Manhattan

Jail or prison · built c. 1931 · Block 691, Lot 1.

On Umarelli: https://umarelli.org/nyc/1006910001/550-west-20-street

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

## Building permits

- Alteration, filed Sep 8, 2026, estimated cost $1K, described as “Hereby filing for the installation of a pipe scaffold as shown on drawings. No change in use, egress or occupancy.”
- Alteration, filed Jul 27, 2026, estimated cost $35K, described as “Filing herewith removal of all existing gas piping as per plans.”
- Alteration, filed Jul 27, 2026, estimated cost $30K, described as “Filing herewith conversion of the existing wet system to a dry temporary standpipe system for the duration of phase "1". Phase "2": standpipe to be extended/new installation after new building core has been installed.”
- Alteration, filed Jun 5, 2026, estimated cost $2.6M, described as “Filing herewith localized repairs of brick, terracotta and cast stone masonry as per plans. No change in use, egress, or occupancy.”
- Alteration, filed Jun 1, 2026, estimated cost $25K, described as “Facade openings in portion of terra cotta exterior wall on north facade for construction hoist installation.”
- Alteration, filed Jun 1, 2026, estimated cost $200K, described as “Means & methods for demolition of portion of brick and terra cotta exterior rear wall in advance of larger structural alteration as per plans.”
- Alteration, filed May 29, 2026, estimated cost $2K, described as “Construction fence as per drawings. Construction fence shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application. Dot permits by others for fence installed on sidewalk/roadway.”
- Alteration, filed Apr 8, 2026, estimated cost $20K, described as “Installation and use of debris chute during interior and partial demolition, filed separately under M01304727-I1 and M01314086-I1.”
- Alteration, filed Apr 8, 2026, estimated cost $20K, described as “Installation and use of mechanical demo equipment as per plans.”
- Major Renovation — Conversion, filed Dec 19, 2025, estimated cost $33.0M, 131 units added, 15 stories, described as “Mpp-431: filing herewith enlargment and conversion of existing building as per plans. The building will consist of affordable housing units and community facility spaces.”
- Alteration, filed Nov 13, 2025, estimated cost $500K, described as “Interior non-structural demolition as per plans.”
- Alteration, filed Oct 2, 2025, described as “Installation of temporary suspended scaffold equipment.”
- Alteration, filed Dec 26, 2024, described as “FISP INSPECTION (Facade Inspection Safety Program)INDUSTRIAL ROPE ACCESS TECHNIQUES AND METHODSSEE ATTACHED PLANSDesignated Primary Site supervisor: Jesus Decola”
- Alteration, filed Apr 3, 2024, estimated cost $10K, described as “Installation of new sidewalk shed at 550 west 20 street, manhattan as indicated on plans. There will be no change in the use, egress, or occupancy under this application”

## Property taxes

- Assessment: $4,568,850
- Market value (city estimate): $10,153,000
- Taxable value: $0
- Assessed land: $2,079,000
- Assessed improvements: $2,489,850

## Zoning

C6-3 (part of the lot is C6-2): floor area ratio 6.07 built, 7.52 allowed by base zoning.

## Flood zone

Current FEMA flood map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NGVD29). FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 11 ft (NAVD88).

## Landmarks

Part of Seaman's YMCA Home, now Bayview Correctional Facility (Individual Landmark). 1 Landmarks Preservation Commission permit is on file.

## In the news

[Chelsea Beacon Breaks Ground At 550 West 20th Street In Chelsea, Manhattan](https://newyorkyimby.com/2026/09/chelsea-beacon-breaks-ground-at-550-west-20th-street-in-chelsea-manhattan.html), New York YIMBY, Sep 20, 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