# 309 East 94th Street, Manhattan

Commercial · built c. 1927 · Block 1557, Lot 8.

On Umarelli: https://umarelli.org/nyc/1015570008/309-east-94-street

More construction in Upper East Side: https://umarelli.org/nyc/manhattan/upper-east-side.md

## Building permits

- Alteration, filed May 9, 2023, estimated cost $15K, described as “Conversion of remnant stack to a debris chute as per plans filed herewith. Debris chute for use during partial demolition, filed separately.”
- Alteration, filed May 5, 2023, estimated cost $100K, described as “Installation of test piles in conjunction with alt co #M00799130. No change to use, egress or occupancy under this application”
- Alteration, filed Apr 4, 2023, estimated cost $1K, described as “Temporary shoring at stair landings 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 Dec 16, 2022, estimated cost $15K, described as “Installation of temporary plywood fence as per plans. No change in use, egress or occupancy.”
- Major Renovation — Non-residential, filed Oct 17, 2022, estimated cost $74.2M, 9 stories, described as “Herewith filing for change of use, egress and occupancy for proposed life sciences building. Horizontal and vertical enlargements of existing building.”
- Alteration, filed Aug 26, 2022, estimated cost $2K, described as “Installation of temporary system scaffold stair tower as per drawings. System scaffold stair tower shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Aug 23, 2022, estimated cost $3K, described as “Installation of temporary pipe 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 23, 2022, estimated cost $3K, described as “Installation of temporary pipe 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 23, 2022, estimated cost $3K, described as “Installation of temporary pipe 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 4, 2022, estimated cost $249K, described as “Temporary shoring to support portions of roof to allow for abatement as per plans.”
- Alteration, filed Jul 7, 2022, estimated cost $5K, described as “Installation of temporary roof protection at adjacent properties during bldg alteration, filed sep. Temporary roof protection shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application.”
- Alteration, filed Jul 5, 2022, estimated cost $1.0M, described as “Herewith filing for structural demolition work as per plans. No change to use egress or occupancy under this application.”
- Alteration, filed Jul 5, 2022, estimated cost $6K, described as “Herewith filing mechanical demo equipment for use during partial demolition of 5 story building (filed separately under M00761510) as per plans.”
- Alteration, filed Jun 28, 2022, estimated cost $350K, described as “Herewith filing for structural removals as per plans. No change to use, egress or occupancy under this application.”
- Alteration, filed Jun 27, 2022, estimated cost $57K, described as “Herewith filing for mechanical removals as per plans. No change to use, egress or occupancy under this application”
- Alteration, filed Jun 27, 2022, estimated cost $20K, described as “Herewith filing for a temporary standpipe and pressurization alarm system as per plans. No change to use, egress or occupancy under this application.”
- Alteration, filed Jun 27, 2022, estimated cost $36K, described as “Herewith filing for plumbing removals as per plans. Fitout work to be filed separately. No change to use, egress or occupancy under this application.”
- Alteration, filed Jun 27, 2022, estimated cost $228K, described as “Herewith filing for mechanical removals as per plans.”
- Alteration, filed Jun 27, 2022, estimated cost $57K, described as “Herewith filing mechanical demo equipment for use during partial demolition of 2 story building (filed separately under M00749252) as per plans”
- Alteration, filed Jun 27, 2022, estimated cost $29K, described as “Herewith filing for the means & methods for structural removals of 2 story building as per plans.”
- Alteration, filed Jun 27, 2022, estimated cost $18K, described as “Herewith filing for plumbing removals as per plans.”
- Alteration, filed Jun 27, 2022, estimated cost $7K, described as “Herewith filing for sprinkler and standpipe removals as per plans.”
- Alteration, filed Jun 27, 2022, estimated cost $11K, described as “Herewith filing for sprinkler/standpipe removals as per plans. No change to use, egress or occupancy under this application.”
- Alteration, filed Jun 27, 2022, estimated cost $885K, described as “Interior removal of walls, doors, floor finishes, and ceilings on all floors; removal of windows and non-structural masonry wall infill; roof waterproof membrane assembly to the existing roof slab; and removal of roof parapet walls down to…”
- Alteration, filed Jun 24, 2022, estimated cost $110K, described as “Herewith filing for the removal of this story portion of this existing building. AI1 approved by john raine uploaded as supporting documentation.”

3 more, older permits are in this building’s full list on the map: https://umarelli.org/nyc/1015570008/309-east-94-street.

## Property taxes

- Assessment: $8,797,050
- 2026–27 tax: $860,552
- Market value (city estimate): $19,549,000
- Taxable value: $7,932,820
- Assessed land: $2,331,000
- Assessed improvements: $6,466,050

## Zoning

C8-4: floor area ratio 5.27 built, above the 5.00 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Aug 31, 2026: $73,136,835, 145,838 sq ft ($501 per sq ft)
- Dec 2, 2021: $70,000,000, 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, moderate risk: a 0.2% chance of flooding each year. FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 12 ft (NAVD88).

## In the news

[Construction Begins on Iron Horse Labs at 309 East 94th Street on Manhattan’s Upper East Side](https://newyorkyimby.com/2023/10/construction-begins-on-iron-horse-labs-at-309-east-94th-street-on-manhattans-upper-east-side.html), New York YIMBY, Oct 24, 2023.

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