399 Knickerbocker Avenue, Brooklyn
Commercial · built c. 1931 · Block 3269, Lot 4.
Building permits
- Alteration, filed Sep 23, 2026, estimated cost $435K, described as “Interior renovation of existing gym on the first, second, and third floor. No change in occupancy, use or egress”
- No Work, filed Jan 28, 2026
- Alteration, filed Oct 31, 2025, estimated cost $400, described as “Illuminated non-advertising double-sided projecting accessory sign - puregym. No change of use, egress or occupancy.”
- Alteration, filed Oct 31, 2025, estimated cost $1K, described as “Illuminated non-advertising accessory wall sign - puregym. No change of use, egress or occupancy.”
- Alteration, filed Sep 24, 2025, estimated cost $140K, described as “New partial height interior non-load bearing stud wall, and entry check-in doors within an existing gym. No change in occupancy, use or egress”
- Alteration, filed Mar 8, 2023, estimated cost $5K, described as “A 8' high solid plywood fence will be installed at the corner of Knickerbocker Avenue and Himrod Street to enclose one storefront along Knickerbocker Avenue for the duration of interior alterations.”
- Alteration, filed Jan 10, 2023, estimated cost $75K, described as “Modification of ductwork and piping associated with store renovation on 1ST and 2ND floors.”
- Alteration, filed Jan 10, 2023, estimated cost $35K, described as “Modification of plumbing fixtures associated with renovation of store (five below).”
- Alteration, filed Jan 10, 2023, estimated cost $18K, described as “Sprinkler modifications associated with store renovation on 1ST & 2ND floors (five below).”
- Alteration, filed Dec 20, 2022, estimated cost $540K, described as “Interior removal and installation of partitions associated with renovation of existing store. Storefront to be replaced and glazing as per plans filed herewith.”
- Alteration, filed Nov 30, 2022, estimated cost $7K, described as “Erect illuminated, accessory business channel letter wall sign-b with back panel, no change to use, egress or occupation”
- Alteration, filed Nov 30, 2022, estimated cost $24K, described as “Erect illuminated, accessory business channel letter wall sign-a with back panel, no change to use, egress or occupation”
- Alteration, filed Nov 30, 2022, estimated cost $200, described as “Erect non-illuminated accessory d/f blade wall sign-c, non-flashing, non-advertising sign, no change in use, egress, or occupancy”
Property taxes
- Assessment
- $4,634,550
- 2026–27 tax
- $271,176
- Market value (city estimate)
- $10,299,000
- Taxable value
- $3,729,330
- Assessed land
- $365,850
- Assessed improvements
- $4,268,700
Tax breaks
- ICAP abatement, through Jun 30, 2043, a $133,382 credit this tax year.
Zoning
C4-3: floor area ratio 3.40 built, 3.40 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Board and land use applications
- Variance or special permit (Board of Standards and Appeals 276-15-BZ): Variance or special permit, Granted, filed Dec 24, 2015, decided Oct 14, 2016. Special Permit (§73-36) to permit a physical culture establishment (Blink) within a portion of an existing commercial building. C4-3 zoning district.
- Bushwick Neighborhood Plan (City Planning 2019K0199): Completed. This is an application for a 300-block section of Bushwick, Brooklyn, Community District 4 to create a thriving and inclusive Bushwick through preservation and creation of affordable housing, targeted investments in neighborhood…