6 West 77th Street, Manhattan
Co-op · 92 units · built c. 1928 · Block 1129, Lot 39.
Building permits
- Alteration, filed Jul 9, 2026, described as “Installation of swingstage scaffolding as per plan and in accordance with Chapter 33 of NYC 2022 Building Code. No change in use, egress or occupancy.”
- Alteration, filed May 26, 2026, estimated cost $3K, described as “Installation of a temporarily supported scaffold per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed May 26, 2026, estimated cost $3K, described as “Installation of a temporary Material hoist per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed May 8, 2026, estimated cost $45K, described as “Alteration of an existing apartment unit #11A with new heat pump type air conditioning units, toilet exhaust fans and dryer exhaust system. No change in use, egress, or occupancy.”
- Alteration, filed Apr 30, 2026, estimated cost $3K, described as “Installation of a temporarily heavy-duty sidewalk shed per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Feb 18, 2026, estimated cost $48K, described as “Alteration of an existing apartment unit #11A with new partitions, finishes, and appliances. Minor window work on secondary facades. No change in use, egress, or occupancy.”
- Alteration, filed Feb 18, 2026, estimated cost $28K, described as “Modification and installation of plumbing fixtures, and replacement of gas range with gas cooktop.”
- Alteration, filed Feb 4, 2026, estimated cost $366K, described as “Facade and exterior repairs as per drawings. No change in use, egress or occupancy is involved under this application.”
- Alteration, filed Oct 29, 2024, estimated cost $10K, described as “Filing herewith pl application to supersede previously bis approved and permitted appication # 103779537 to secure signoff. No change in use, egress, or occupancy.”
- Alteration, filed Apr 8, 2024, estimated cost $40K, described as “Installation of temporary construction fence/enclosure system with sound insulation as per drawings. Fence enclosure shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application”
- Alteration, filed Jun 26, 2023, estimated cost $56K, described as “Replacement of windows throughout entire apartment 12C. (2) new masonry openings for a/c units. New kitchen exhaust opening.”
- Alteration, filed May 31, 2023, estimated cost $10K, described as “Interior renovation of residential unit 12C on the 12TH floor for plumbing work.”
- Alteration, filed May 31, 2023, estimated cost $125K, described as “Interior renovation of residential unit 12C on the 12TH floor. Removal of nonbearing partitions with installation of new finishes.”
- Alteration, filed Feb 22, 2023, estimated cost $100K, described as “Filing plumbing fixture modification at Apt 16F as per plans. No change in se, egress, or occupancy under this application.”
- Alteration, filed Feb 22, 2023, estimated cost $200K, described as “Filing to modify existing HVAC system with steam radiators, replace existing exhaust and AC units as per plans. No change in use, egress, or occupancy under this application.”
- Alteration, filed Feb 22, 2023, estimated cost $278K, described as “Filing interior renovation to Apt 16F with partition, door, floor, and finish work as per plans. No change in use, egress, or occupancy under this application.”
- Alteration, filed Apr 14, 2022, estimated cost $10K, described as “Plumbing fixture replacement, new plumbing fixtures and new branch piping limited to apartment 7F only. no change of use, egress of occupancy. Application filed in conjunction with M00672573 (General Construction).”
- Alteration, filed Apr 14, 2022, estimated cost $100K, described as “Minor Alterations to existing apartment 7F Only as shown on plans. No change of use, egress or occupancy. Application filed in conjunction with M00672624 (Plumbing)”
- Alteration, filed Apr 12, 2022, estimated cost $3K, described as “Installation of temporary metal shanty as per plans during general construction work. No change in use, egress or occupancy under this application. Shanty to comply with chapter 33 of NYC building code of 2014.”
- Alteration, filed Oct 12, 2021, estimated cost $23K, described as “Renovate Apt. 4E, general construction to include limited removal and construction of non structural partitions, new lighting, replacement of plumbing. No change to use, egress or occupancy. Pl under #M00596588”
- Alteration, filed Oct 12, 2021, estimated cost $11K, described as “Replace, relocate and install plumbing fixtures in Apt. 4E. GC filed under M00596131.”
- Alteration, filed Oct 5, 2021, estimated cost $90K, described as “Minor non-structural partition layout changes and new finishes, fixtures and equipment throughout”
- Alteration, filed Aug 2, 2021, estimated cost $7.0M, described as “Interior renovation of apartment including reallocation of floor area to create duplex apartment and mechanical penthouse, interior accessory stair, and modification to egress stairs and bulkhead.”
- Alteration, filed Aug 2, 2021, estimated cost $24K, described as “Installation of temporary mock up 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 Jul 6, 2021, estimated cost $5K, described as “Installation of temporary scaffold as per plans during general construction work. No change in use, egress or occupancy. Scaffold to comply with chapter 33 of NYC building code of 2014.”
9 more, older permits are in this building’s full list on the map.
Property taxes
- Assessment
- $23,863,500
- 2026–27 tax
- $2,412,900
- Market value (city estimate)
- $53,030,000
- Taxable value
- $22,597,495
- Assessed land
- $4,860,000
- Assessed improvements
- $19,003,500
Tax breaks
- Co-op and condo abatement, with no end date, a $398,529 credit this tax year.
Zoning
R10A: floor area ratio 11.54 built, above the 10.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Aug 31, 2026: $3,850,000
- Mar 26, 2026: $7,900,000
- Jan 8, 2026: $495,000
- Jul 21, 2025: $2,195,000
- Jun 5, 2025: $4,200,000
- May 23, 2024: $7,800,000
- Feb 29, 2024: $1,649,000
- Jan 29, 2024: $3,875,000
- Jul 11, 2023: $6,250,000
- Nov 29, 2022: $8,375,000
The 10 most recent of 27 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). 50 Landmarks Preservation Commission permits are on file.
In the news
Foster + Partners Revises Proposals for Penthouse Addition at 6-16 West 77th Street on Manhattan’s Upper West Side, New York YIMBY, May 3, 2022.