46 Diamond Street, Brooklyn
Two-family · built c. 1931 · Block 2685, Lot 60.
Building permits
- New Building — Multi-Family, filed Dec 23, 2025, 8 units, 4 stories, described as “Proposed four (4) story multiple dwelling as per plans filed herewith”
- Alteration, filed Sep 2, 2026, estimated cost $5K, described as “Installation of 300 psf sidewalk shed as per plans. Sidewalk shed shall comply with chapter #33 of the 2022 code. No change in use, egress or occupancy under this application.”
- Alteration, filed Sep 2, 2026, estimated cost $5K, described as “Installation of 300 psf sidewalk shed as per plans. Sidewalk shed shall comply with chapter #33 of the 2022 code. No change in use, egress or occupancy under this application.”
- Alteration, filed Apr 24, 2026, estimated cost $3K, described as “8' construction fence”
- Demolition, filed Jan 21, 2026, estimated cost $50K, described as “Full demolition of existing 2-story house.”
- Demolition, filed Jan 15, 2026, estimated cost $25K, described as “Full demolition of existing 1-story structure.”
- Demolition, filed Jan 15, 2026, estimated cost $10K, described as “Full demolition of existing garage.”
- Alteration, filed May 27, 2020, estimated cost $1K, described as “Propose new construction fence for NB application #321595010”
- Alteration, filed Nov 18, 2019, estimated cost $1K, described as “Propose mechanical work in conjunction with NB job # 321595010 as per plan”
- Alteration, filed Nov 18, 2019, estimated cost $1K, described as “Propose plumbing and sprinkler work in conjunction with NB # 321595010.”
- Alteration, filed Oct 22, 2019, estimated cost $1K, described as “Structural scope of work for proposed new building filed in conjunction with NB # 321595010.”
Property taxes
- Assessment
- $36,992
- 2026–27 tax
- $7,340
- Market value (city estimate)
- $616,533
- Taxable value
- $36,992
- Assessed land
- $5,492
- Assessed improvements
- $31,500
Zoning
R6B: floor area ratio 0.32 built, 2.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone X, moderate risk: a 0.2% chance of flooding each year.
Recent sales
- May 31, 2023: $1,860,000, 800 sq ft ($2,325 per sq ft)
- Feb 11, 2019: $1,750,000, 800 sq ft ($2,188 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.