815 Flatbush Avenue, Brooklyn
Apartment building · 76 units · built c. 1931 · Block 5083, Lot 3.
Building permits
- Alteration, filed Nov 9, 2026, estimated cost $8K, described as “Interior build-out of part of 1ST floor for a trade school. No change of use, occupancy and egress under this application. Co application was filed under B01353316-I1.”
- Alteration, filed May 26, 2026, estimated cost $50K, described as “Alt-CO application filed to subdivide existing retail space into 3 spaces on the first floor of existing eight (8) story with cellar mixed-use building.”
- Alteration, filed Feb 22, 2026, estimated cost $2K, described as “Installation of an illuminated business accessory sign . No change in use, egress or occupancy.”
- Alteration, filed Dec 19, 2025, estimated cost $66K, described as “CSC Store #24006 Installation of new plumbing fixtures and associated piping. Provide Water, Sanitary, Grease Sanitary & Vent services. Propose a new electric storage type water heater.”
- Alteration, filed Dec 19, 2025, estimated cost $120K, described as “Existing (1) 4.5 ton split system and ceiling exhaust restroom fans to remain. New (1) 3 ton split system along with new ductwork proposed.”
- Alteration, filed Dec 15, 2025, estimated cost $212K, described as “CSC Store#24006 Installation of interior non-bearing partitions, finishes, lighting and equipment for existing tenant space to accommodate Cold Stone Creamery. No change in use, egress, floor area or occupancy under this application.”
- Alteration, filed Feb 24, 2021, described as “Installation of temporary pipe scaffold as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jun 15, 2020, estimated cost $1K, described as “Installation of needle beam scaffold in accordance with nycc 2014 chapter 33. No change in egress,use, or occupancy.”
- Alteration, filed May 13, 2020, estimated cost $1K, described as “Temporary Standpipe application filed in conjunction with NB job number: 321595751”
- Alteration, filed Apr 8, 2020, described as “Installation of sidewalk shed as per plans. No change in use, egress or occupancy.”
- Alteration, filed Dec 3, 2019, estimated cost $1K, described as “Temporary construction fence filing in conjunction with new building # 321595751”
- Alteration, filed Nov 27, 2019, estimated cost $2K, described as “Sprinkler and Standpipe specifications and work types filed in conjunction with NB job number: 321595751”
- Alteration, filed Nov 27, 2019, estimated cost $1K, described as “Plumbing specifications and work types filed in conjunction with NB job number: 321595751”
- Alteration, filed Nov 27, 2019, estimated cost $1K, described as “Mechanical specifications and work types filed in conjunction with NB job number: 321595751”
- Alteration, filed Nov 19, 2019, estimated cost $1K, described as “Structural specifications and work types filed in conjunction with NB job number: 321595751”
- Alteration, filed Jul 31, 2019, estimated cost $1K, described as “Curb cut application filed in conjunction with NB job number: 321595751”
- Alteration, filed Dec 10, 2018, estimated cost $5K, described as “Installation of temporary pipe scaffold as per plans. Pipe scaffold shall comply with chapter 33 of the 2014 NYC building code. No change in use, egress or occupancy under this application.”
- Alteration, filed Dec 6, 2018, estimated cost $11K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2014 NYC building code. No change in use, egress or occupancy under this application.”
Property taxes
- Assessment
- $6,197,400
- 2026–27 tax
- $122,531
- Market value (city estimate)
- $13,772,000
- Taxable value
- $985,051
- Assessed land
- $1,063,350
- Assessed improvements
- $5,134,050
Tax breaks
- 421-a exemption, through Jun 30, 2057, about $648,364 a year below the full tax.
Zoning
R7A: floor area ratio 6.31 built, above the 4.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Nov 7, 2018: $10,000,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Board and land use applications
- Flatbush Avenue BID Expansion (City Planning 2023K0228): Business improvement district, Completed, filed Dec 14, 2022, decided Feb 20, 2024. An application from the Department of Small Business Services (SBS) to expand and amend the Flatbush Avenue Business Improvement District in Community Districts 9 and 14 of Brooklyn. (The map below shows the approximate boundary; Please…