2,193 recorded events, 1900–2026, from 19 city data systems. The city's paper trail here is mostly 1,015 311 service requests, 522 HPD complaints, 329 HPD housing violations.
Full record, year by year Support this site
A sustained record of distress well beyond its peers. More recorded distress than 96% 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 381.3. In ZIP 11216, 38% of residential buildings hold an A and 19% 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 | 143 total — 38 class C (immediately hazardous), 90 class B, 15 class A. Oldest open since 2016-06-29. |
status snapshot refreshed weekly from HPD records
64 heat or hot-water complaints in the last three years (winter 2023–24: 26 · winter 2024–25: 32 · winter 2025–26: 4). Repeated winter clusters suggest a chronic heating problem.
No bedbug-infested units reported in the last three years of filings.
$1,250 in enforcement penalties imposed (ECB/OATH) in the last three years.
319 service requests in the last three years. Most common: UNSANITARY CONDITION (81) · Noise (78) · HEAT/HOT WATER (29) · Rodent (25) · Dirty Condition (15) · DOOR/WINDOW (11).
$381,610 in permitted construction work filed since 2016 (6 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 (1910) |
| Yes | Six or more residential units (18) |
| 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) | OTA 701 ST MARKS LLC |
| Head officer | ELLEN GUCCIONE |
| Managing agent | Diamond Mine Real Estate LLC |
| Last registered | 2026-07-01 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $2,597,000 | $1,168,650 |
| 2026 | $3,481,000 | $1,566,450 |
| 2027 | $3,470,000 | $1,561,500 |
The city's market estimate has risen 34% between tax years 2025 and 2027.
| Heating fuel | NATURALGAS |
| Restaurant | Cuisine | Grade | Notes |
|---|---|---|---|
| Bon Pates LLC | Not yet graded | — |
Report to 311: Food poisoning · Food safety complaint
1 restaurant · 0 with mice evidence · See them on the Mice Map
1 Food Establishment complaint to 311 at this address in the last three years (most often: Rodents/Insects/Garbage) · complaints filed by the public; DOHMH investigates, outcomes aren't published.
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.
1 street-flooding or sewer-backup complaints at this address since 2013 (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 | Nostrand Av — A C · 0.3 mi straight-line (about a 9-minute walk) · station accessibility: none Nostrand Av — 3 · 0.4 mi straight-line (about a 10-minute walk) · station accessibility: none |
| Bus | Nearest boarding stop: Nostrand Av / Bergen St — B44 · 150 ft |
| Citi Bike | Prospect Pl & Nostrand Ave · 450 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: Brooklyn Arts and Science Elementary School Middle: The School of Integrated Learning. 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.
637 Nostrand 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 |
| Food poisoning | Food poisoning |
| Food safety complaint | Food safety complaint |
| Anything else | Anything else |
319 311 service requests from this address in the last three years — 29 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 DIAMOND MINE REAL ESTATE LLC — 11 buildings, 248 units. Grades across the portfolio: A1 · B5 · C2 · D3. See the whole portfolio
| Building | Borough | Units | Grade |
|---|---|---|---|
| 112 West 138 Street | MN | 54 | B |
| 50 Greene Avenue | BK | 39 | D |
| 802 Bergen Street | BK | 32 | B |
| 471 Vanderbilt Avenue | BK | 26 | A |
| 1398 Dean Street | BK | 20 | C |
| 637 Nostrand Avenue | BK | 18 | D |
| 403 Macon Street | BK | 16 | B |
| 299 Putnam Avenue | BK | 16 | B |
| 303 Putnam Avenue | BK | 16 | C |
| 276 Throop Avenue | BK | 8 | B |
| 942 Bergen Street | BK | 3 | D |
Most recent mortgage recorded against this lot: $1,000,000 on 2025-10-10 (lender: Metropolitan Commercial Bank), 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 |
|---|---|---|---|
| 2025-10-10 | Mortgage $1,000,000 — from OTA 1400 DEAN, LLC; OTA 701 ST. MARKS, LLC; OTA 942 BERGEN, LLC; OTA 244 NEW YORK, LLC to METROPOLITAN COMMERCIAL BANK | $1,000,000 | |
| 2025-10-10 | Agreement $9,461,940 — from OTA 701 ST. MARKS, LLC; OTA 1400 DEAN, LLC; OTA 942 BERGEN, LLC; OTA 244 NEW YORK, LLC to METROPOLITAN COMMERCIAL BANK | $9,461,940 | |
| 2025-06-27 | Agreement $9,461,940 — from OTA 942 BERGEN, LLC; OTA 244 NEW YORK, LLC; OTA 1400 DEAN, LLC; OTA 701 ST. MARKS, LLC to METROPOLITAN COMMERCIAL BANK | $9,461,940 | |
| 2025-01-29 | Agreement $1,689,602 — from OTA 1400 DEAN, LLC; OTA 244 NEW YORK, LLC; OTA 942 BERGEN, LLC; OTA 874 BERGEN, LLC; OTA 7 to METROPOLITAN COMMERCIAL BANK | $1,689,602 | |
| 2025-01-29 | Mortgage $1,689,602 — from OTA 701 ST. MARKS, LLC; OTA 874 BERGEN, LLC; OTA 1400 DEAN, LLC; OTA 942 BERGEN, LLC; OTA to METROPOLITAN COMMERCIAL BANK | $1,689,602 | |
| 2024-07-30 | Agreement $13,993,450 — from OTA 244 NEW YORK, LLC; OTA 1400 DEAN, LLC; OTA 701 ST. MARKS, LLC; OTA 942 BERGEN, LLC; OT to METROPOLITAN COMMERCIAL BANK | $13,993,450 | |
| 2023-02-17 | Agreement $13,993,450 — from OTA 1400 244 NEW YORK LLC; OTA 874 BERGEN LLC; OTA 1400 DEAN LLC; OTA 942 BERGEN LLC; OTA to METROPOLITAN COMMERCIAL BANK | $13,993,450 | |
| 2019-10-16 | CMTG $32,506,550 — from OTA 1400 DEAN, LLC; OTA 942 BERGEN, LLC; OTA 701 ST. MARKS, LLC; OTA 874 BERGEN STREET, LL to METROPOLITAN COMMERCIAL BANK | $32,506,550 | |
| 2017-05-24 | AL&R $13,993,450 — from OTA 244 NEW YORK, LLC; OTA 1400 DEAN, LLC; OTA 874 BERGEN, LLC; OTA 701 ST. MARKS, LLC; OT to METROPOLITAN COMMERCIAL BANK | $13,993,450 | |
| 2017-05-24 | Agreement $13,993,450 — from OTA 701 ST. MARKS, LLC; OTA 874 BERGEN, LLC; OTA 1400 DEAN, LLC; OTA 942 BERGEN, LLC; OTA to METROPOLITAN COMMERCIAL BANK | $13,993,450 | |
| 2017-05-24 | Mortgage $2,251,064 — from OTA 874 BERGEN, LLC; OTA 1400 DEAN, LLC; OTA 701 ST. MARKS, LLC; OTA 244 NEW YORK, LLC to METROPOLITAN COMMERCIAL BANK | $2,251,064 | |
| 2017-05-24 | Deed $8,900,000 — from ZT REALTY 40 CUMBERLAND LLC to OTA 701 ST. MARKS, LLC | $8,900,000 | |
| 2017-05-18 | Sold for $8,900,000 | $8,900,000 | $494,444 |
| 2015-02-04 | Agreement $4,600,000 — from ZT REALTY 40 CUMBERLAND LLC to BANKUNITED, N.A. | $4,600,000 | |
| 2015-02-04 | Mortgage $2,303,134 — from ZT REALTY 40 CUMBERLAND LLC to BANKUNITED, N.A. | $2,303,134 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 7 | 0 | 103 | 7 | 5 | 122 |
| 2018 | 1 | 5 | 87 | 0 | 10 | 103 |
| 2019 | 1 | 1 | 51 | 1 | 4 | 58 |
| 2020 | 3 | 0 | 61 | 0 | 3 | 67 |
| 2021 | 0 | 2 | 153 | 0 | 11 | 166 |
| 2022 | 0 | 1 | 141 | 0 | 32 | 174 |
| 2023 | 0 | 7 | 209 | 1 | 13 | 230 |
| 2024 | 0 | 2 | 290 | 1 | 10 | 303 |
| 2025 | 0 | 1 | 204 | 7 | 10 | 222 |
| 2026 | 0 | 3 | 71 | 0 | 7 | 81 |
Every one of the 2,193 recorded events, 1900–2026, is laid out year by year in the full report (print-ready).
Explore: ZIP 11216 · Landlord rankings · How grades work · The map · The Mice Map