11 Riverside Drive, Manhattan
Co-op · 636 units · built 1950 · Block 1184, Lot 31.
Building permits
- Alteration, filed Sep 15, 2026, estimated cost $320K, described as “General construction including modification to partitions related to combination of apts 9W/e & d per tppn 3/97. Create new openings for thru wall units. No change to occupancy, use or egress.”
- Alteration, filed Jun 23, 2026, estimated cost $200K, described as “Interior renovation of existing apartment (9G). No change to use, occupancy, or egress.”
- Alteration, filed Mar 11, 2026, estimated cost $88K, described as “Combination of apts 7GE and 7 he filed in conjunction with DOB now pl. No change to use, occupancy or egress.”
- Alteration, filed Feb 20, 2026, estimated cost $147K, described as “Filing for interior renovation of the apartment 8EW. Remove and install minor interior partition work, finishes etc. No change in use, egress or occupancy.”
- Alteration, filed Dec 15, 2025, estimated cost $64K, described as “In unit 9SE on floor 9, removal of non-load bearing partitions as shown on plans. All plumbing work filed under separate application. No change to egress, use, or occupancy.”
- Alteration, filed Aug 28, 2025, estimated cost $76K, described as “Minor interior renovation to apt 8STE. Removal of non-loading bearing partitions, new framing, partition and finishes as per plans. No change in use, egress, or occupancy”
- Alteration, filed Aug 22, 2025, estimated cost $10K, described as “Combination of apts 5BW & 5CW unter tppn 3/97 filed in conjunction with DOB now pl. No change to use, occupancy or egress.”
- Alteration, filed Aug 20, 2025, estimated cost $105K, described as “Renovations and combination of apt 6JH-e as per tppn #3/97. No change in use, egress or occupancy”
- Alteration, filed May 27, 2025, estimated cost $68K, described as “Minor interior alterations to existing apartment unit. Demolition of non-loadbearing partitions, new door slabs, new partitions, new finishes. No change to use or egress.”
- Alteration, filed Apr 29, 2025, estimated cost $8K, 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 Mar 13, 2025, estimated cost $27K, described as “Proposed interior renovation of existing apartment with new finishes. No change in use, egress and occupancy.”
- Alteration, filed Dec 13, 2024, estimated cost $80K, described as “Structural plans filed herewith to show modification of exterior wall openings. No change to use, egress, or occupancy.”
- Alteration, filed Sep 11, 2024, estimated cost $166K, described as “Filing for interior renovation of the apartment 10MW. Remove and install minor interior partition work, finishes etc. No change in use, egress or occupancy.”
- Alteration, filed Aug 1, 2024, estimated cost $405K, described as “Installation of new air conditioning system and ventilation for east laundry room, west laundry room and library. No change in egress or occupancy.”
- Alteration, filed Jul 31, 2024, estimated cost $126K, described as “Interior renovation of apartment 17RE. New finishes, fixtures, partitions and millwork per plans.”
- Alteration, filed Jul 29, 2024, estimated cost $105K, described as “Combination of apartments 8AE and 8BE on 008 floor. Work includes minor non-structural partition work and finishes. No change in use, egress, or occupancy..”
- Alteration, filed Jun 25, 2024, estimated cost $331K, described as “Garage Repairs as per plans filed herewith. No change to use, egress, or occupancy.”
- Alteration, filed May 10, 2024, estimated cost $142K, described as “It is proposed to reconfigure kitchen and closets as shown on plans. No change of use, egress or occupancy.”
- Alteration, filed Apr 8, 2024, estimated cost $100K, described as “Installation of new plumbing fixtures in conjunction with renovation of existing apartment in multi-family Co-Op. No change in use, egress or occupancy.”
- Alteration, filed Apr 8, 2024, estimated cost $150K, described as “Installation of new air conditioning and ventilation system and replacement of radiators in conjunction with renovation of existing apartment in a multi-family Co-Op. No change in use, egress or occupancy.”
- Alteration, filed Apr 8, 2024, estimated cost $390K, described as “Minor demolition and general construction for the combination of apartments 17EW and 17FW as well as the redimising of apartment 17CW as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Jan 26, 2024, estimated cost $92K, described as “Renovation of an existing apartment #7TE on the seventh floor. No change to use, egress or occupancy.”
- Alteration, filed Jan 16, 2024, estimated cost $90K, described as “Interior renovation: removal of gwb, flr, clg & wall finishes & light fixts. Install new gwb, flr, clg & wall finishes. Install replacement light fixts. No proposed change to use, egress or occupancy. No enlargement or development.”
- Alteration, filed Oct 27, 2023, estimated cost $11K, described as “Alt 2 for proposed general construction to be performed in existing unit #14C on the 4th floor. All in accordance with submitted plans. No changes to use, egress or occupancy under this application.”
- Alteration, filed Sep 7, 2023, estimated cost $269K, described as “11 riverside drive - north and south service entrance restoration as per plans. No change in use, egress or occupancy.”
33 more, older permits are in this building’s full list on the map.
Property taxes
- Assessment
- $82,561,050
- 2026–27 tax
- $8,382,438
- Market value (city estimate)
- $183,469,000
- Taxable value
- $78,417,618
- Assessed land
- $11,745,000
- Assessed improvements
- $70,816,050
Tax breaks
- Co-op and condo abatement, with no end date, a $1,381,897 credit this tax year.
Zoning
R10A: floor area ratio 9.04 built, 10.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Sep 15, 2026: $800,000
- Aug 27, 2026: $570,000
- Jun 4, 2026: $600,000
- May 28, 2026: $1,056,250
- May 22, 2026: $575,000
- May 21, 2026: $760,000
- May 6, 2026: $1,395,000
- Apr 30, 2026: $608,000
- Mar 20, 2026: $665,000
- Mar 3, 2026: $2,310,000
The 10 most recent of 229 open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of West End-Collegiate Historic District Extension (Historic District). 50 Landmarks Preservation Commission permits are on file.