1,898 recorded events, 1900–2026, from 17 city data systems. The city's paper trail here is mostly 1,049 311 service requests, 431 HPD complaints, 231 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 69% of 25-99-unit residential buildings citywide. The citywide median for 25-99-unit residential buildings is 23.6 penalty points per 10 units; this building carries 61.4. In ZIP 10034, 43% of residential buildings hold an A and 8% grade D or F. How grades work
Among 17,252 25-99-unit residential buildings citywide · left is less recorded distress, right is more
| Open HPD violations | 20 total — 7 class C (immediately hazardous), 8 class B, 5 class A. Oldest open since 2012-06-28. |
status snapshot refreshed weekly from HPD records
51 heat or hot-water complaints in the last three years (winter 2023–24: 8 · winter 2024–25: 14 · winter 2025–26: 22). Repeated winter clusters suggest a chronic heating problem.
No bedbug-infested units reported in the last three years of filings.
319 service requests in the last three years. Most common: Noise (147) · Water System (24) · HEAT/HOT WATER (24) · PAINT/PLASTER (22) · DOOR/WINDOW (11) · Illegal Parking (10).
$215,900 in permitted construction work filed since 2016 (5 filings with a declared cost) — a rough measure of how actively the owner maintains the building. Permit costs cover filed construction work only — they do not capture routine maintenance or repairs done without a permit.
| Yes | Built before 1974 (1930) |
| Yes | Six or more residential units (60) |
| 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) | Isham 521, LLC |
| Head officer | Scott Silverman |
| Managing agent | Bronstein Properties LLC |
| Last registered | 2025-08-20 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $4,449,000 | $2,002,050 |
| 2026 | $4,542,000 | $2,043,900 |
| 2027 | $4,459,000 | $2,006,550 |
The city's market estimate has risen 0% between tax years 2025 and 2027.
| Energy grade (LL33) | D — ENERGY STAR score 47/100, posted at the entrance by law (2022 disclosure cycle) |
| Heating fuel | NO4FUEL |
Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).
Hurricane evacuation zone 3 of 6 — zone 1 evacuates first.
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 | Inwood-207 St — A · 550 ft straight-line (about a 3-minute walk) · station accessibility: full 207 St — 1 · 700 ft straight-line (about a 3-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: 10 Av / Sherman Av — M100 · 350 ft |
| Citi Bike | W 211 St & 10 Ave · 350 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: 18, 98, 278 Middle: Harold O. Levy School. 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.
521 Isham 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 |
319 311 service requests from this address in the last three years — 24 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 BRONSTEIN PROPERTIES LLC — 140 buildings, 5,632 units. Grades across the portfolio: A56 · B52 · C20 · D11 · F1. See the whole portfolio
showing 60 of 140 buildings
Most recent mortgage recorded against this lot: $807,035 on 2020-07-20 (lender: Capital One, National Association), covering 4 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 |
|---|---|---|---|
| 2021-05-13 | RPTT $1,696,842 — from CATALYST INVESTORS IV, L.P.; MIP III TOWERS, LLC; MIP III (REIT) AIV, LP; COX CPH, LLC; CA to AMERICAN TOWER INVESTMENTS, LLC | $1,696,842 | |
| 2020-07-20 | Agreement $29,150,000 — from POST 118 LLC; ISHAM 521 LLC; SEAMAN 20 LLC; PAYSON 55 LLC to CAPITAL ONE, NATIONAL ASSOCIATION | $29,150,000 | |
| 2020-07-20 | AL&R $29,150,000 — from POST 118 LLC; SEAMAN 20 LLC; ISHAM 521 LLC; PAYSON 55 LLC to CAPITAL ONE, NATIONAL ASSOCIATION | $29,150,000 | |
| 2020-07-20 | CMTG $9,075,000 — from SEAMAN 20 LLC; ISHAM 521 LLC; POST 118 LLC; PAYSON 55 LLC to CAPITAL ONE, NATIONAL ASSOCIATION | $9,075,000 | |
| 2020-07-20 | CMTG $6,775,000 — from SEAMAN 20 LLC; POST 118 LLC; ISHAM 521 LLC; PAYSON 55 LLC to CAPITAL ONE, NATIONAL ASSOCIATION | $6,775,000 | |
| 2020-07-20 | Mortgage $807,036 — from PAYSON 55 LLC; SEAMAN 20 LLC; POST 118 LLC; ISHAM 521 LLC to CAPITAL ONE, NATIONAL ASSOCIATION | $807,036 | |
| 2015-03-09 | Agreement $7,250,000 — from ISHAM 521 LLC to THE DIME SAVINGS BANK OF WILLIAMBURGH | $7,250,000 | |
| 2015-03-09 | AL&R $7,250,000 — from ISHAM 521 LLC to THE DIME SAVINGS BANK OF WILLIAMBURGH | $7,250,000 | |
| 2015-03-09 | Mortgage $1,945,396 — from ISHAM 521 LLC to THE DIME SAVINGS BANK OF WILLIAMBURGH | $1,945,396 | |
| 2012-10-24 | Mortgage $1,887,735 — from ISHAM 521 LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $1,887,735 | |
| 2012-10-24 | Agreement $5,550,000 — from THE DIME SAVINGS BANK OF WILLIAMSBURGH to ISHAM 521 LLC | $5,550,000 | |
| 2012-10-24 | AL&R $5,550,000 — from ISHAM 521 LLC to THE DIME SAVINGS BANK OF WILLIAMSBURGH | $5,550,000 | |
| 2009-07-14 | Mortgage $3,450,000 — from ISHAM 521 LLC to SIGNATURE BANK | $3,450,000 | |
| 2009-07-14 | Deed $3,068,000 — from HARVARD EQUITIES, INC. to ISHAM 521 LLC | $3,068,000 | |
| 2009-07-14 | Mortgage $330,000 — from ISHAM 521 LLC to SIGNATURE BANK | $330,000 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 5 | 0 | 50 | 0 | 3 | 58 |
| 2018 | 5 | 5 | 203 | 0 | 6 | 219 |
| 2019 | 3 | 23 | 139 | 0 | 4 | 169 |
| 2020 | 0 | 0 | 142 | 7 | 1 | 150 |
| 2021 | 0 | 3 | 109 | 1 | 3 | 116 |
| 2022 | 0 | 3 | 118 | 0 | 4 | 125 |
| 2023 | 0 | 0 | 64 | 0 | 5 | 69 |
| 2024 | 0 | 6 | 86 | 0 | 2 | 94 |
| 2025 | 0 | 2 | 252 | 0 | 3 | 257 |
| 2026 | 0 | 2 | 171 | 0 | 1 | 174 |
Every one of the 1,898 recorded events, 1900–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 10034 · Landlord rankings · How grades work · The map · The Mice Map