Brooklyn · Carroll Gardens-Cobble Hill-Gowanus-Red Hook · Public building report

1 12 Street Extension, Brooklyn

1 12 Street Extension is a 5-story, 6-unit building in Carroll Gardens-Cobble Hill-Gowanus-Red Hook. NYC public records show 18 DOB complaints and 44 DOB violations associated with the building. The most recent DOB complaint was filed April 16, 2026.

This building has 18 alternative addresses. ? NYC often lists more than one street address for the same building. Corner lots, multiple street frontages, and official aliases in city address files all map to one BIN.

• 11 12 Street Extension
• 13 12 Street Extension
• 15 12 Street Extension
• 17 12 Street Extension
• 19 12 Street Extension
• 21 12 Street Extension
• 23 12 Street Extension
• 25 12 Street Extension
• 27 12 Street Extension
• 29 12 Street Extension
• 3 12 Street Extension
• 31 12 Street Extension
• 33 12 Street Extension
• 35 12 Street Extension
• 37 12 Street Extension
• 5 12 Street Extension
• 7 12 Street Extension
• 9 12 Street Extension

This building ranks in the top 4% for DOB complaints and top 3% for DOB violations.

Public records

• DOB complaints 18
• DOB violations 44
• HPD violations 0
• Bedbug reports 0
• 311 requests 0
• Residential units 0