780 St Marks Avenue is tracked in NYC Property Audit as BBL 3012280007, located in BK, built in 1921, 66 residential units, 27 open DOB/HPD violation signals, FEMA flood zone X. The free preview keeps address-level facts crawl-visible while the full due-diligence report remains available in the audit.
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Audit
780 ST MARKS AVENU
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All findings, all sources, one defensible document.
Annual property tax estimated at ~$238,139 (Tax Class 2)· NYC DOF
Last sold for $5,450,000 in February 2005· ACRIS
Most recent mortgage: $200,000 from JPMORGAN CHASE BANK, N.A. in 2021 (+3 more on Financials)· ACRIS
Building Details
✓ Verified · PLUTO
Building Area
98,814 sf
Zoning
R6
Basement
0
Land Use
Multi-Family Elevator Buildings
Registered Owner
780 St Marks Realty
Rent Regulation
Yes · 66 regulated units(DHCR)
Quick facts
How many units does this building have?
66 residential units.
How tall is this building?
6 stories, non-fireproof construction, built in 1921.
How big is the lot?
26,587 sq ft (150 ft × 250.58 ft).
What's the building class?
Class D1 — Elevator apt.
How many buildings are on this lot?
1 building on the lot.
Overall Outlook
Long-term signal for residential or commercial viability
Caution — Known Issues
Maintenance Reliability
Multiple open violations — proceed with caution
68 / 100
Safety
Moderate activity — typical urban
70 / 100
Daily Life
Transit access via Nostrand Av (3)
~8 min subway
Compliance · 10-year history
Violation timeline
DOB · HPD · OATH
201620182020202220242026
Active10Resolved with debt0Resolved43Hover any dot for detail
Violations & maintenance history
HPD · DOB · OATH — 10 open, 43 resolved
Open Issues — 10
Minor
Replace with new the missing handrail at, stairs below grade , northeast section, basement story , building front yard
§ 27-2005 ADM CODE
HPD · Filed Apr 2026 · Open ·
Minor
Abate the nuisance consisting of the storage of refrigerators, with doors intact, at south yard
§ 27-2005 ADM CODE & 309 M/D LAW
HPD · Filed Apr 2026 · Open ·
Minor
567 (c) § 27-2017, 27-2017.1, 27-2017.4, 27-2017.5, 27-2017.8, 27-2019, 27-2021 HMC: abate the nuisance consisting of evidence of rats and all underlying causes creating the pest infestations, by using integrated pest management (ipm), eliminate all burrow entry and passageways, pest nests, holes, gaps or cracks in walls, ceilings, floors, fixing leaks and managing garbage in public areas. Evidence found at rats , at all building's yard
HPD · Filed Apr 2026 · Open
Minor
Replace with new the missing iron balusters at guardrail to masonry ramp below grade at, southwest section, at south yard
§ 27-2005 ADM CODE
HPD · Filed Apr 2026 · Open ·
Minor
Replace the broken or defective cracked wash basin
§ 27-2026 ADM CODEApt 4CA · 3rd floor
HPD · Filed Mar 2026 · Open ·
Resolved History — 43 (showing 3)
Closed
Work without a permit. At time of inspection observed exterior led lights all around each exposures including parking lot installed without a permit. Remedy: obtain all permits.
OATH · Filed Apr 2026 · Closed
Closed
406.7.10.3. Failure to comply with building rules and regulations per BC 406.7.10.3 in that the illumination of the parking area projecting onto the front of adjacent building across street at 910 prospect park
OATH · Filed Jan 2026 · Closed
Closed
Failure to comply with building rules and regulations per BC 406.7.10.3 in that th illumination of the parking are is projected onto the front of adjacent buildings at 910 prospect park. Light is on 2 floor of
OATH · Filed Jan 2026 · Closed
Nearby buildings to audit
Other properties in the area with active violation history — useful comparables when evaluating risk.