703 recorded events, 1985–2026, from 16 city data systems. The city's paper trail here is mostly 280 311 service requests, 224 HPD complaints, 89 HPD housing violations.
Full record, year by year Support this site
A modest record — below the level that usually signals systemic problems. More recorded distress than 81% 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 88.7. In ZIP 11207, 62% of residential buildings hold an A and 13% grade D or F. How grades work
Among 46,798 6-24-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 13 total — 8 class C (immediately hazardous), 5 class B, 0 class A. Oldest open since 2019-05-09. |
status snapshot refreshed weekly from HPD records
20 heat or hot-water complaints in the last three years (winter 2024–25: 2).
No bedbug-infested units reported in the last three years of filings.
44 service requests in the last three years. Most common: Noise (25) · HEAT/HOT WATER (9) · WATER LEAK (3) · Illegal Parking (1) · PLUMBING (1) · Plumbing (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 (1906) |
| 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) | MF Blue Valley Apartments, LLC |
| Head officer | Mark Cashman |
| Managing agent | CAM Property MGMT |
| Last registered | 2026-03-12 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $996,000 | $448,200 |
| 2026 | $797,000 | $358,650 |
| 2027 | $956,000 | $430,200 |
The city's market estimate has fallen 4% 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.
2 street-flooding or sewer-backup complaints at this address since 2012 (0 in the last three years).
Sources: FEMA flood maps (coastal), NYC DEP Stormwater Flood Maps (cloudburst), NYC hurricane evacuation zones, and 311 records for this address.
| Subway | Wilson Av — L · 1,050 ft straight-line (about a 5-minute walk) · station accessibility: partial (Manhattan-bound only) |
| Bus | Nearest boarding stop: Decatur St / Knickerbocker Av — B20 · 100 ft |
| Citi Bike | Knickerbocker Ave & Moffat St · 600 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. /I.S. 384 Frances E. Carter Middle: Evergreen Middle School for Urban Exploration. 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.
871 Knickerbocker Avenue
| 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 |
44 311 service requests from this address in the last three years — 9 of them about heat or hot water.
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 CAM PROPERTY MGMT — 47 buildings, 1,639 units. Grades across the portfolio: A2 · B10 · C10 · D19 · F6. See the whole portfolio
Most recent mortgage recorded against this lot: $660,502 on 2018-12-13 (lender: Greystone Servicing Corporation, INC.), covering 2 lots — the amount covers all of them. Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2025-04-09 | Deed $6,168,311 — from 867-871 KNICKERBOCKER LLC to FANNIE MAE | $6,168,311 | |
| 2025-04-07 | Sold for $6,168,311 | $6,168,311 | $1,028,052 |
| 2018-12-13 | Agreement $4,708,000 — from 867-871 KNICKERBOCKER LLC to GREYSTONE SERVICING CORPORATION, INC. | $4,708,000 | |
| 2018-12-13 | Mortgage $660,502 — from 867-871 KNICKERBOCKER LLC to GREYSTONE SERVICING CORPORATION, INC. | $660,502 | |
| 2014-03-25 | Agreement $4,500,000 — from 867-871 KNICKERBOCKER LLC to PEOPLE'S UNITED BANK | $4,500,000 | |
| 2014-03-25 | Mortgage $3,030,000 — from 867-871 KNICKERBOCKER LLC to PEOPLE'S UNITED BANK | $3,030,000 | |
| 2012-08-03 | AL&R $720,000 — from 867-871 KNICKERBOCKER LLC to EASTERN CAPITAL GROUP LLC | $720,000 | |
| 2012-08-03 | Mortgage $720,000 — from 867-871 KNICKERBOCKER LLC to EASTERN CAPITAL GROUP LLC | $720,000 | |
| 2012-08-03 | AL&R $750,000 — from 867-871 KNICKERBOCKER LLC to EASTERN CAPITAL GROUP LLC | $750,000 | |
| 2012-08-03 | Deed $880,000 — from ESTATE OF JAMES BALLARD A/K/A JAMES I. B; LINDA GILMORE AS ADMINISTRATRIX to 867-871 KNICKERBOCKER LLC | $880,000 | |
| 2012-08-03 | Mortgage $750,000 — from 867-871 KNICKERBOCKER LLC to EASTERN CAPITAL GROUP LLC | $750,000 | |
| 1999-10-08 | Mortgage $55,000 — from BALLARD, JAMES I to DELTA FUNDING CORPORATION | $55,000 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 0 | 2 | 36 | 0 | 0 | 38 |
| 2018 | 4 | 1 | 12 | 4 | 2 | 23 |
| 2019 | 0 | 0 | 35 | 0 | 2 | 37 |
| 2020 | 0 | 0 | 3 | 0 | 0 | 3 |
| 2021 | 0 | 0 | 26 | 0 | 0 | 26 |
| 2022 | 0 | 1 | 23 | 0 | 5 | 29 |
| 2023 | 0 | 1 | 21 | 0 | 0 | 22 |
| 2024 | 0 | 0 | 27 | 0 | 1 | 28 |
| 2025 | 0 | 2 | 38 | 4 | 1 | 45 |
| 2026 | 0 | 0 | 6 | 0 | 1 | 7 |
Every one of the 703 recorded events, 1985–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11207 · Landlord rankings · How grades work · The map · The Mice Map