# 356 West 18th Street, Manhattan

Health center · built c. 1900 · Block 741, Lot 63.

On Umarelli: https://umarelli.org/nyc/1007410063/356-west-18-street

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

Every lot on block 741: https://umarelli.org/nyc/manhattan/741.md

## Building permits

- Alteration, filed Jan 5, 2026, estimated cost $67K, described as “Modification work to include floor repair on floors 3-6 as per plans. No change of use egress or occupancy.”
- Alteration, filed Jun 27, 2025, estimated cost $96K, described as “Phase 2C - interior renovations . Parttions, doors and ceiling modifications and related finishes as per plans filed herewith. No change in use, egress or occupancy..”
- Alteration, filed Jun 26, 2025, estimated cost $12K, described as “Phase 2D - interior renovations work to include removal of exisitng non egress stair (1-2ND fl) and closure of stair opening as per plans filed herewith. No change in use, egress or occupancy..”
- Alteration, filed Jun 10, 2025, estimated cost $110K, described as “Mechanical modifications (phase 2B) at subject location as per plans. No change in use egress or occuapncy”
- Alteration, filed Jun 10, 2025, estimated cost $36K, described as “Structural Modifications (PHASE 2D) as per plans. No change of use egress or occupancy.”
- Alteration, filed Jun 10, 2025, estimated cost $36K, described as “Structural Modifications (PHASE 2C) as per plans. No change of use egress or occupancy.”
- Alteration, filed Jun 10, 2025, estimated cost $26K, described as “Plumbing and sprinkler modifications (phase 2B) as per plans. No change in use egress or occupacny.”
- Alteration, filed Jun 10, 2025, estimated cost $22K, described as “Structural Modifications (PHASE 2B) as per plans. No change of use egress or occupancy.”
- Alteration, filed Jun 10, 2025, estimated cost $4K, described as “Sprinkler modifications (phase 2C) as per plans. No change in use egress or occupacny.”
- Alteration, filed Jun 10, 2025, estimated cost $30K, described as “Mechanical modifications and associated duct work (phase 2C) at subject location as per plans. No change in use egress or occuapncy”
- Alteration, filed Jun 10, 2024, described as “Installation of temporary pipe scaffold as per plans. No change in use, egress or occupancy.”

## Property taxes

- Assessment: $3,075,750
- Market value (city estimate): $6,835,000
- Taxable value: $0
- Assessed land: $273,600
- Assessed improvements: $2,802,150

## Tax breaks

- Nonprofit exemption (health center), with no end date, about $333,657 a year below the full tax.

## Zoning

R8B: floor area ratio 5.37 built, above the 4.00 base zoning allows, which bonuses, transfers or older rules can permit.

## Flood zone

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

## Board and land use applications

- COMMUNITY HEALTH PROJECT (City Planning P1995M0320): Completed, decided Nov 14, 1995. DISPOSITION OF CITY-OWNED PROPERTY, 1 PARCEL

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