603 Washington Street, Manhattan
Co-op · 54 units · built c. 1880 · Block 602, Lot 30.
Building permits
- Alteration, filed Feb 21, 2025, estimated cost $96K, described as “Non-load bearing fire rated interior partition types per bc 709 proposed work limited to interior only at apt 6B. No change to use, egress or occupancy.”
- Alteration, filed Feb 21, 2025, estimated cost $26K, described as “Interior non-loading partitions and plumbing fixtures no change of use , egress or occupancy under this application (Apt 6B)”
- Alteration, filed Aug 5, 2024, estimated cost $132K, described as “9th Cycle Facade Inspection & Safety Program Repair. No changes to use, egress, or occupancy.”
- Alteration, filed Jul 26, 2024, estimated cost $80K, described as “Interior renovation. No change in use, occupancy, or egress.”
- Alteration, filed Jul 22, 2024, estimated cost $110K, described as “Interior alterations to existing residential unit 2C. No change to use, occupancy or egress”
- Alteration, filed May 6, 2024, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed as per emergency letter. No change in use, egress or occupancy. Sidewalk shed shall comply with chapter #33 of the NYC building code. Live load 300PSF.”
- Alteration, filed Jan 4, 2024, estimated cost $100K, described as “Herewith filing interior renovation to apartment 1A. No change in use egress or occupancy.”
- Alteration, filed Mar 14, 2023, estimated cost $23K, described as “Plumbing work filed in association with Interior Renovations as per plans. No Change in Use, egress or Occupancy.”
- Alteration, filed Mar 14, 2023, estimated cost $23K, described as “Interior Renovations of Unit 2B based on plans. No Change of Use, Egress or Occupancy.”
- Alteration, filed Sep 6, 2022, estimated cost $10K, described as “Install new half bathroom in Apartment 3E”
- Alteration, filed Aug 29, 2022, estimated cost $5K, described as “Construct new half bathroom in Apartment 3E”
- Alteration, filed Jul 21, 2021, estimated cost $37K, described as “Heat exchanger replacement for domestic hot water.”
- Alteration, filed Apr 10, 2020, estimated cost $20K, described as “Plumbing work related to boiler replacement and installation of domestic hot water storage tank. No change in use, egress or occupancy”
- Alteration, filed Apr 10, 2020, estimated cost $300K, described as “Remove existing boilers and associated equipment and replace with new boilers and associated equipment. Install new flue ad breeching and connect to existing chimney. No change in use, egress or occupancy”
- Alteration, filed Sep 20, 2019, estimated cost $85K, described as “Extend fire place chimney flues as per plans.”
- Alteration, filed Jul 31, 2019, estimated cost $43K, described as “Replace 3 window air conditioners with split multi unit condenser hanging from roof parapet and 3 interior wall mounted air exchangers. No change to use, occupancy, or egress.”
Property taxes
- Assessment
- $10,897,200
- 2026–27 tax
- $1,098,203
- Market value (city estimate)
- $24,216,000
- Taxable value
- $10,151,700
- Assessed land
- $1,170,000
- Assessed improvements
- $9,727,200
Tax breaks
- Co-op and condo abatement, with no end date, a $165,042 credit this tax year.
Zoning
M1-5/R7X (part of the lot is M1-5): floor area ratio 4.46 built, 5.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone X, moderate risk: a 0.2% chance of flooding each year.
Recent sales
- Sep 1, 2026: $3,750,000
- Jan 12, 2026: $4,395,000
- Aug 14, 2025: $3,950,000
- Oct 17, 2024: $2,060,000
- May 7, 2024: $1,300,000
- Mar 21, 2024: $2,725,000
- Jul 24, 2023: $2,490,000
- Sep 22, 2022: $3,800,000
- Apr 5, 2021: $1,570,000
- Jun 18, 2019: $3,075,000
The 10 most recent of 13 open-market sales since 2016, from the Department of Finance’s sales files.