135 recorded events, 1973–2026, from 13 city data systems. The city's paper trail here is mostly 41 HPD housing violations, 33 311 service requests, 16 HPD complaints.
Full record, year by year Support this site
A meaningful record of code violations or complaints relative to its peers. More recorded distress than 86% of 6-24-unit residential buildings citywide. The citywide median for 6-24-unit residential buildings is 16.3 penalty points per 10 units; this building carries 128. In ZIP 11215, 70% of residential buildings hold an A and 4% grade D or F. How grades work
Among 46,798 6-24-unit residential buildings citywide · left is less recorded distress, right is more
No current HPD flags in the latest weekly snapshot: no open violations, no pending litigation, no active vacate orders, and not in the Alternative Enforcement Program.
No heat or hot-water complaints in the last three years.
No bedbug-infested units reported in the last three years of filings.
10 service requests in the last three years. Most common: PAINT/PLASTER (3) · PLUMBING (2) · DOOR/WINDOW (2) · Abandoned Vehicle (1) · Derelict Vehicles (1) · Indoor Air Quality (1).
No permitted work with a declared cost filed in the last decade. Permit costs cover filed construction work only — they do not capture routine maintenance or repairs done without a permit.
| Yes | Built before 1974 (1931) |
| Yes | Six or more residential units (6) |
| No | 421-a / J-51 tax benefit on the current tax roll |
2 of 3 signals present. This is the classic profile of a rent-stabilized building (pre-1974, 6+ units) — many units in such buildings remain stabilized. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).
| Registered owner(s) | 251 20TH STREET LLC |
| Head officer | MIGUEL HERNANDEZ |
| Managing agent | HERNCO, LLC |
| Last registered | 2025-07-08 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $1,225,000 | $551,250 |
| 2026 | $1,440,000 | $648,000 |
| 2027 | $1,633,000 | $734,850 |
The city's market estimate has risen 33% between tax years 2025 and 2027.
Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).
Not in a hurricane evacuation zone.
Not in the city's stormwater (cloudburst) flood maps under any modeled scenario.
No street-flooding or sewer-backup complaints on record at this address.
Sources: FEMA flood maps (coastal), NYC DEP Stormwater Flood Maps (cloudburst), NYC hurricane evacuation zones, and 311 records for this address.
| Subway | Prospect Av — R · 0.2 mi straight-line (about a 6-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: 5 Av / 18 St — B63 · 200 ft |
| Citi Bike | 17 St & 5 Ave · 700 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: Magnet School of Math, Science and Design Technology. Confirm with the DOE's school search. |
Distances are straight-line, not walking routes. Transit locations from the MTA and Citi Bike, bike facilities from NYC DOT, school zones from the DOE's 2024–25 maps.
251 20 Street
| Heat or hot water | Heat or hot water |
| Apartment maintenance | Apartment maintenance |
| Bed bugs | Bed bugs |
| Residential pests | Residential pests |
| Rats or mice | Rats or mice |
| Anything else | Anything else |
10 311 service requests from this address in the last three years.
311 will ask for the address, the apartment if the problem is inside, and what's wrong. Contact details are optional for most complaints; food-poisoning reports can be anonymous. Complaints appear in the city's public 311 data, usually within a day or two, and then in the Live from 311 box on this page.
Managed by HERNCO, LLC — 7 buildings, 37 units. Grades across the portfolio: A5 · B1 · C1. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 316 58 Street | BK | 7 | B |
| 5305 5 Avenue | BK | 6 | A |
| 247 58 Street | BK | 6 | A |
| 251 20 Street | BK | 6 | C |
| 5217 5 Avenue | BK | 6 | A |
| 5311 5 Avenue | BK | 3 | A |
| 5309 5 Avenue | BK | 3 | A |
| Year | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|
| 2017 | 0 | 0 | 0 | 0 | 0 |
| 2018 | 0 | 6 | 2 | 9 | 17 |
| 2019 | 1 | 4 | 0 | 1 | 6 |
| 2020 | 0 | 7 | 0 | 1 | 8 |
| 2021 | 0 | 3 | 0 | 1 | 4 |
| 2022 | 0 | 1 | 0 | 1 | 2 |
| 2023 | 0 | 15 | 0 | 2 | 17 |
| 2024 | 0 | 35 | 0 | 1 | 36 |
| 2025 | 0 | 1 | 0 | 1 | 2 |
| 2026 | 0 | 0 | 0 | 1 | 1 |
Every one of the 135 recorded events, 1973–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11215 · Landlord rankings · How grades work · The map · The Mice Map