20 West 84th Street, Manhattan
Condominium · 37 units · built c. 1924 · Block 1197, Lot 7501.
Building permits
- Alteration, filed Aug 27, 2026, estimated cost $62K, described as “Alteration work to apartment 5A on the 5TH floor of an existing 9 story building. No change to zoning, use, egress, or occupancy under this application.”
- Alteration, filed Apr 24, 2025, estimated cost $50K, described as “Kitchen renovation and minor partition work. No change to use, egress or occupancy.”
- Alteration, filed Oct 23, 2024, estimated cost $253K, described as “Filing for exterior facade repair for floors 001-009 as per plans filed herewith. No change in egress, use or occupancy.”
- Alteration, filed Oct 8, 2024, estimated cost $3K, described as “Installation of sidewalk shed as shown on drawings. No change in use, egress or occupancy. We shall comply with chapter 33 of 2022 b.c”
- Alteration, filed May 10, 2024, estimated cost $40K, described as “Installation of mechanical system in conjuction with alteration application # M01036945. No change in use, egress or occupancy.”
- Alteration, filed May 7, 2024, estimated cost $278K, described as “Work to apt 2C and apt 2D on the 2ND floor of a 9-story + penthouse, multiple dwelling building. Alterations to include interior partition work and the reapportionment of space between apartments. No change to zoning, use, egress, or…”
- Alteration, filed Apr 26, 2024, estimated cost $25K, described as “Work to apartment 2C & 2D on the 2ND floor of an existing 9 story + penthouse + cellar building. Alterations to include removed, relocated, and new plumbing fixtures. No change to zoning, use, egress, or occupancy under this application.”
- Alteration, filed Apr 25, 2024, estimated cost $58K, described as “Work to apt 2C & 2D on the 2ND floor of a 9-story + penthouse, multiple dwelling building. Alterations to consist of interior demolition work. No change to zoning, use, egress, or occupancy under this application.”
- Alteration, filed Feb 25, 2020, estimated cost $5K, described as “Proposed installation of heavy duty sidewalk shed as per plans. Live load 300 per square feet. Sidewalk shed shall comply with chapter # 33 of the 2014 code. No change in use occupancy or egress under this application.”
- Alteration, filed Aug 15, 2019, estimated cost $8K, described as “Proposed installation of heavy duty sidewalk shed for remedial repairs as per plans. No change in use occupancy or egress under this application. Live load 300 per square feet. Sidewalk shed shall comply with chapter # 33 of the 2014 code.”
Property taxes
- Assessment
- $5,703,748
- 2026–27 tax
- $679,681
- Market value (city estimate)
- $12,675,000
- Taxable value
- $5,464,104
- Assessed land
- $924,749
- Assessed improvements
- $4,778,999
- Condo units with their own tax lots
- 37
Zoning
R8B: floor area ratio 5.42 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.
Recent sales
- May 13, 2026: $2,090,000, Apt 5D
- Feb 10, 2026: $1,225,000, Apt 5A
- Jun 20, 2024: $2,050,000, Apt 6C
- Jun 20, 2024: $1,150,000, Apt 7A
- Apr 10, 2024: $4,100,000, Apt 2C, sold with other lots
- Oct 13, 2023: $2,045,000, Apt 6D
- Jan 4, 2022: $1,150,000, Apt 8A
- Jun 25, 2021: $150,000, Apt 1B
- Jun 25, 2021: $250,000, Apt 3C, sold with other lots
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Upper West Side/Central Park West Historic District (Historic District). 14 Landmarks Preservation Commission permits are on file.