2840 Knapp Street, Brooklyn
Nursing home · built 1969 · Block 8808, Lot 45.
Building permits
- Alteration, filed Dec 4, 2025, estimated cost $175K, described as “Install accessory dialysis den in cellar floor for in-house patients. Interior work only. No change of use or occupancy no change in egress”
- Alteration, filed Mar 24, 2025, estimated cost $9K, described as “Installation of 300PSF sidewalk shed and pipe scaffolding as per plans. All equipment shall comply with ch #33 of the NYC code 2022. No change in use, occupancy or egress under this application.”
- Alteration, filed Jun 5, 2024, estimated cost $15K, described as “Facade repair work. No change in use, exists or occupancy”
- Alteration, filed May 31, 2024, estimated cost $5K, described as “Proposed installation of heavy duty sidewalk shed as per plans. Live load 300 lbs per square feet. Sidewalk shed shall comply with chapter #33 of the NYC building code. No change in use, occupancy, or egress under this application.”
- Alteration, filed Feb 3, 2022, estimated cost $10K, described as “Install tank room enclosure”
- Alteration, filed Feb 3, 2022, estimated cost $40K, described as “Install one (1) 2,000 gallon aboveground storage tank and oil piping to generator. Generator filed by others.”
- Alteration, filed Aug 27, 2021, estimated cost $20K, described as “Steel dunnage on 1st floor roof over garage entry ramp to support backup generator. no change in energy usage, no change in use egress or occupancy”
- Alteration, filed Aug 26, 2021, estimated cost $25K, described as “Installation of emergency generator. FB will be filed under separate application.”
- Alteration, filed Oct 29, 2020, estimated cost $17K, described as “Mechanical work type filed herewith to obtain new certificate of compliance (eup-card) for outdoor condensor units”
Property taxes
- Assessment
- $4,135,950
- 2026–27 tax
- $427,892
- Market value (city estimate)
- $9,191,000
- Taxable value
- $3,944,430
- Assessed land
- $59,850
- Assessed improvements
- $4,076,100
Zoning
R6: floor area ratio 2.25 built, 2.43 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Board and land use applications
- 2840 Knapp Street Rezoning (City Planning P2018K0300): Zoning map change, Zoning text change, Completed, decided Oct 19, 2021. A zoning map amendment from R5 to R6 and a zoning text amendment to map a Mandatory Inclusionary Housing Area (ZR Appendix F) to facilitate renovation and expansion of 5,096 sqft (for a total of 85,971 sqft) of an existing six story…
In the news
Expansion and Upgrades Proposed for 2840 Knapp Street in Sheepshead Bay, Brooklyn, New York YIMBY, Apr 22, 2021.