Also registered as: Quantum Management, Quantum Property Managem, Quantum Property Management, Ltd, Quantum Property Mgmt
Registered managing agent · 30 graded buildings · data of 2026-10-16
A portfolio whose buildings generate few adverse city records. Ranked #623 of 764 New York City management portfolios by recorded distress per unit — 8 penalty points per 10 units over three years (how grades work). See the full rankings
A27 B3
90% of this portfolio's graded buildings hold an A; 0% grade D or F. Across all 30 buildings the city currently records 183 open HPD violations, 34 of them immediately hazardous, and tenants called 311 about heat or hot water 9 times in the last three years.
| Building | Borough | Units | Grade | Penalty rate |
|---|---|---|---|---|
| 260 Broome Street | Manhattan 10002 | 14 | B | 89 |
| 258 St James Place | Brooklyn 11238 | 8 | B | 35 |
| 318 East 112 Street | Manhattan 10029 | 26 | A | 31 |
| 208 Bay 22 Street | Brooklyn 11214 | 16 | A | 16 |
| 957 Pacific Street | Brooklyn 11238 | 18 | A | 12 |
| 728 41 Street | Brooklyn 11232 | 24 | A | 11 |
| 42-25 80 Street | Queens 11373 | 147 | B | 10 |
| 606 West 113 Street | Manhattan 10025 | 24 | A | 10 |
| 112-31 38 Avenue | Queens 11368 | 17 | A | 7 |
| 2155 Daly Avenue | Bronx 10460 | 12 | A | 7 |
| 91-06 Whitney Avenue | Queens 11373 | 18 | A | 4 |
| 316 West 83 Street | Manhattan 10024 | 8 | A | 4 |
| 50 East 80 Street | Manhattan 10075 | 8 | A | 4 |
| 305 East 91 Street | Manhattan 10128 | 16 | A | 4 |
| 85 Stanton Street | Manhattan 10002 | 10 | A | 3 |
| 138 Edgecombe Avenue | Manhattan 10030 | 10 | A | 3 |
| 40-24 76 Street | Queens 11373 | 12 | A | 3 |
| 623 Avenue H | Brooklyn 11230 | 38 | A | 3 |
| 305 West 55 Street | Manhattan 10019 | 20 | A | 2 |
| 161 North 4 Street | Brooklyn 11211 | 37 | A | 1 |
| 76-26 47 Avenue | Queens 11373 | 22 | A | 1 |
| 1043 Halsey Street | Brooklyn 11207 | 25 | A | 0 |
| 80-06 47 Avenue | Queens 11373 | 75 | A | 0 |
| 71 West 83 Street | Manhattan 10024 | 12 | A | 0 |
| 306 East 82 Street | Manhattan 10028 | 7 | A | 0 |
| 129 West 123 Street | Manhattan 10027 | 8 | A | 0 |
| 925 Pacific Street | Brooklyn 11238 | 15 | A | 0 |
| 935 Pacific Street | Brooklyn 11238 | 10 | A | 0 |
| 916 Pacific Street | Brooklyn 11238 | 4 | A | 0 |
| 904 Pacific Street | Brooklyn 11238 | 21 | A | 0 |
click any building for its full public record · penalty rate = severity-weighted city records per 10 units over three years
11-11 44 Dr 11101
Different registered agents that file from one office; they may or may not be related.
Buildings are attributed to this portfolio by the registered managing agent named in their HPD registrations — the entity responsible for day-to-day operations. Ownership LLCs are listed on each building's own page. Every figure is computed mechanically from records published by the City of New York and recomputed weekly, so a portfolio that fixes its buildings improves here. Corrections: support@mice.nyc.