11 West 20th Street, Manhattan
Condominium · 6 units · built c. 1901 · Block 822, Lot 7501.
Building permits
- Alteration, filed Jul 31, 2025, estimated cost $80K, described as “Install replacement boiler/burner unit as per plans. No change in use, occupancy or egress.”
- Alteration, filed Mar 3, 2025, estimated cost $50K, described as “Application filed to change use at 4th floor commercial (art studio) to residential (apartment) new certificate of occupancy is required. Installation of new electric range and exhuast for kitchentte, new elevator door and removal of one…”
- Alteration, filed Nov 14, 2024, estimated cost $689K, described as “Renovations to ph as per plans filed herewith. No change in use, egress or occupancy”
- Alteration, filed Apr 28, 2022, described as “Installation of temporary heavy duty sidewalk shed per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Apr 28, 2022, described as “Installation of temporary supported scaffold per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Jun 14, 2021, estimated cost $10K, described as “Filing for removal existing partitions and doors and install new partitions and doors. No change in use egress of occupancy.”
- Alteration, filed Apr 30, 2021, estimated cost $75K, described as “Structural work as per plans. No change of use, egress or occupancy under this application.”
- Alteration, filed Mar 18, 2021, estimated cost $425K, described as “Exterior renovation of existing terraces. No change of use, egress or occupancy under this application.”
- Alteration, filed Jan 16, 2019, estimated cost $5K, described as “Installation of a heavy duty sidewalk shed approximately 70' long as per plans during general construction work. No change in use, egress or occupancy. Sidewalk shed to comply with chapter 33 of NYC building code of 2014.”
Property taxes
- Assessment
- $6,651,763
- 2026–27 tax
- $388,355
- Market value (city estimate)
- $14,781,690
- Taxable value
- $3,392,561
- Assessed land
- $617,403
- Assessed improvements
- $6,034,360
- Condo units with their own tax lots
- 9
Tax breaks
- Co-op and condo abatement, with no end date, a $33,276 credit this tax year.
Zoning
C6-4A: floor area ratio 7.67 built, 10.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Feb 1, 2016: $3,600,000, Apt C2
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Ladies' Mile Historic District (Historic District). 50 Landmarks Preservation Commission permits are on file.
Board and land use applications
- Flatiron BID Expansion (City Planning 2021M0260): Business improvement district, Completed, filed Nov 30, 2020, decided May 19, 2021. An application from the Small Business Services (SBS) on behalf of the Flatiron Business Improvement District (BID) to modify the existing plan and expand the BID in Community Districts 4 and 5 of Manhattan.
- 11 WEST 20TH STREET (City Planning P1991M0123): Completed, decided Feb 5, 1991. CERT TO CONVERT 6TH THRU 8TH & PENTHOUSE FLOORS TO RESIDEN-*TIAL WITH THE 1ST THRU 4TH FLOORS TO BE PRESERVED FOR MANU-*FACTURING &/OR COMMERCIAL USE
- 11 W20TH ST (City Planning P1989M0476): Completed, decided Oct 9, 1990. CHAIRPERSON'S CERT FOR 5TH & 9TH FLOORS TO BE CONVERTED TO*RESDL & 1ST TO 4TH FLOORS TO BE PRESERVED FOR MANUFACTURING*OR COMM'L USE IN BLDG W/APPROX 23,000SF
- 11 W20 ST, S/E CHELSEA M1-6M DIST (City Planning P1983M0972): Completed, decided Oct 5, 1988. CHAIRMAN'S CERT (ZR15-215) TO LEGALIZE CONVERSION OF FLOORS*5 & 9 ONLY