850 ST MARKS AVENUEBROOKLYN
Also known as: 840 ST MARKS AVENUE, 850 SAINT MARK'S AVENUE, 850 ST MARK'S AVENUE
At a Glance
30
Open Class C
Immediately hazardous — 24hr correction
16
DOB (Dept. of Buildings) Safety Violations
Elevators, boilers, fire safety
15
Open Class B
Hazardous — 30-day correction
$70,710
ECB (Environmental Control Board) Penalties
Environmental Control Board fines
🏗️
Moderate Construction
3 active permits · 20 months
AI Summary
Cross-reference violations, permits, penalties, complaints, and safety records into one plain-English overview.
Habitability Report
Comprehensive building condition summary — includes violations, permits, inspection history, and landlord record.
Building Identity
BIN
3031037
BBL
3012280037
Block / Lot
1228 / 37
Borough
BROOKLYN
ZIP
11213
Year Built
1926
Floors
6
Residential Units
54
Building Class
D4
Zoning
R6
Aerial view unavailable
NYS Orthoimagery
Certificate of Occupancy (CO)
No digital record in BISC of O Status
No digital record in BIS
Unsigned A1/NB Jobs
0
No digital record doesn't mean no CO — older buildings often have paper COs that were never digitized. Verify with NYC Dept. of Buildings (DOB) records.
⚡ Energy Performance
B
Energy Star: 75/100
EPA rating
81.6 kBTU/ft²
Site EUI
454.2 tCO₂e
GHG emissions
LL84 · 2020 data