12 MARTENSE CORP: NYC buildings and housing record
12 MARTENSE CORP is the owner of record on HPD property registrations for 2 NYC buildings (21 units), which have 42 open HPD violations, 16 of them class C, as of Oct 26, 2026.
Across the portfolio: 13 housing complaints to 311 in the last 12 months, 4 executed evictions in 3 years and 0 reported bedbug infestations in 3 years. 1 buildings are graded D or F; the average StreetSpy score is 63/100. Class C means immediately hazardous.
Registered head officers
- CLARISSA MERCEDES (1 buildings)
- MINDY ELLMAN (1 buildings)
Managing agents
- 12 MARTENSE CORP (1 buildings)
- howard H MANDEL (1 buildings)
Buildings in this portfolio
| Address | Area | Units | Open violations | Grade |
|---|---|---|---|---|
| 12 Martense Street | Flatbush | 20 | 42 (16 class C) | F |
| 12 Martense Court | Flatbush | 1 | 0 | A |
How landlord totals are counted. Report an error.
Sources: NYC HPD housing maintenance code violations, HPD property registrations and housing litigation, 311 service requests, DOB violations, NYC Marshals evictions, and HPD bedbug filings from NYC Open Data, plus rent-stabilized unit counts from NYC Department of Finance tax bills. How grades work.