# 793 Madison Avenue, Manhattan

Mixed use · 1 unit · built c. 1881 · Block 1382, Lot 24.

On Umarelli: https://umarelli.org/nyc/1013820024/793-madison-avenue

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

## Building permits

- Alteration, filed Oct 30, 2026, estimated cost $10K, described as “Installation of system scaffolding and shed as per plans. All equipment shall comply with chapter # 33 of the 2022 code. No change in use occupancy or egress under this application.”
- Alteration, filed Apr 11, 2023, estimated cost $15K, described as “Provide temporary shoring to locally demolish existing masonry pier from 1ST floor down to basement. No change in use, egress or occupancy.”
- Alteration, filed May 27, 2022, estimated cost $85K, described as “Hereby filing SOE for excavation at rear patio of existing building and adjacent building for installation of new exterior elevator pit”
- Alteration, filed Feb 22, 2022, described as “Installation of temporary fence as per plans. No change in use, egress or occupancy.”
- Alteration, filed Feb 22, 2022, estimated cost $1K, described as “Installation of temporary barricade as per plans. No change in use, egress or occupancy.”
- Alteration, filed Feb 3, 2022, described as “Installation of temporary pipe scaffold as per plans. No change in use, egress or occupancy.”
- Alteration, filed Feb 3, 2022, described as “Installation of temporary sidewalk shed as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jan 28, 2022, estimated cost $220K, described as “Hereby filing structural and foundation work for new elevator shaft extension. In conjunction with enlargement under Alt-1#121208683. please see alt-1 for zoning and any enlargement information.”
- Alteration, filed Dec 13, 2021, estimated cost $140K, described as “Hereby filing HVAC system and related ductwork & piping per plans filed herewith. No change to use, egress or occupant”
- Alteration, filed Aug 26, 2021, estimated cost $50K, described as “Hereby filing new sprinkler installation as per plans filed herewith. No change in use, egress or occupancy.”
- Alteration, filed Aug 26, 2021, estimated cost $60K, described as “Hereby filing plumbing work that includes demolition of existing plumbing system and installing new water heaters, booster pumps and new plumbing piping for all plumbing fixtures Filing.”
- Alteration, filed Jun 10, 2021, estimated cost $80K, described as “Hereby filing to demolish and construct interior partitions, doors and ceilings, as shown on plans filed herewith. No change in use, egress or occupancy.”

## Property taxes

- Assessment: $5,350,500
- 2026–27 tax: $556,971
- Market value (city estimate): $11,890,000
- Taxable value: $5,134,320
- Assessed land: $1,800,000
- Assessed improvements: $3,550,500

## Zoning

C5-1: floor area ratio 4.23 built, 10.00 allowed by base zoning.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

## Landmarks

Part of Upper East Side Historic District (Historic District). 35 Landmarks Preservation Commission permits are on file.

## In the news

[793 Madison Avenue’s Renovation Progresses on Manhattan’s Upper East Side](https://newyorkyimby.com/2023/03/793-madison-avenues-renovation-progresses-on-manhattans-upper-east-side.html), New York YIMBY, Mar 27, 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