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684 Riverdale Avenue

443Records
14City systems
3Open violations
178.6Penalty rate
Brooklyn · ZIP 11207 · Neighborhood: East New York-New Lots
Open in the map

443 recorded events, 1970–2026, from 14 city data systems. The city's paper trail here is mostly 132 HPD housing violations, 129 HPD complaints, 100 311 service requests.

BoroughBrooklyn 11207
Built1930
Floors2
Res. units5
ClassC2
Owner (PLUTO)SAM RIVERDALE LLC
BBL3038430008
BIN3085637

Full record, year by year   Support this site

GRADE D

A sustained record of distress well beyond its peers. More recorded distress than 99% of 1-5-unit residential buildings citywide. The citywide median for 1-5-unit residential buildings is 0 penalty points per 10 units; this building carries 178.6. In ZIP 11207, 62% of residential buildings hold an A and 13% grade D or F. How grades work

this building
A
C

Among 699,345 1-5-unit residential buildings citywide · left is less recorded distress, right is more

Open with the city right now

Open HPD violations3 total — 0 class C (immediately hazardous), 3 class B, 0 class A. Oldest open since 2025-07-09.

status snapshot refreshed weekly from HPD records

Patterns

No heat or hot-water complaints in the last three years.

No bedbug-infested units reported in the last three years of filings.

What 311 hears from this address

20 service requests in the last three years. Most common: UNSANITARY CONDITION (6) · ELECTRIC (3) · Noise (2) · Illegal Dumping (2) · Illegal Posting (1) · PLUMBING (1).

Filed construction activity

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.

Rent-stabilization signals

YesBuilt before 1974 (1930)
NoSix or more residential units (5)
No421-a / J-51 tax benefit on the current tax roll

1 of 3 signals present. Only a partial profile — stabilization is possible but less likely. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).

Registered with HPD — the names behind the building

Registered owner(s)SAM RIVERDALE LLC
Head officerJOEL RETEK
Managing agentWILLIAMSBURG PROPERTY MANAGEMENT
Last registered2026-07-08

as filed by the owner in the building's HPD registration

What the city thinks it's worth

Tax yearCity market valueAssessed value
2025$438,000 $197,100
2026$463,000 $208,350
2027$556,000 $250,200

The city's market estimate has risen 27% between tax years 2025 and 2027.

Flood exposure

Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).

Hurricane evacuation zone 5 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.

Getting around

SubwayVan Siclen Av — 3 · 900 ft straight-line (about a 4-minute walk) · station accessibility: none
BusNearest boarding stop: New Lots Av / Bradford St — B15 B83 · 250 ft
Citi BikeNew Lots Ave & Vermont St · 450 ft · station location as of 2026-09-23; live availability
School zones (2024–25 map)Elementary: P.S. 013 Roberto Clemente
Middle: J.H.S. 292 Margaret S. Douglas. 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.

Report a problem to 311

684 Riverdale Avenue

Heat or hot waterHeat or hot water
Apartment maintenanceApartment maintenance
Bed bugsBed bugs
Residential pestsResidential pests
Rats or miceRats or mice
Anything elseAnything else

20 311 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.

The landlord's report card

Managed by WILLIAMSBURG PROPERTY MANAGEMENT — 117 buildings, 1,251 units. Grades across the portfolio: A38 · B25 · C14 · D25 · F15. See the whole portfolio

BuildingBoroughUnitsGrade
1466 Watson Avenue BX116 C
2895 Valentine Avenue BX62 B
3165 Villa Avenue BX57 B
1384 Grand Concourse BX44 B
1362 Grand Concourse BX41 B
88 Stockton Street BK39 A
2103 57 Street BK36 A
230 North 8 Street BK36 A
260 Skillman Street BK32 A
101 Macombs Place MN30 A
2131 57 Street BK24 B
30 Throop Avenue BK23 B
254 Wallabout Street BK22 A
3022387501 BK21 A
53 Franklin Avenue BK20 A
42 Skillman Street BK20 A
38 Skillman Street BK20 A
131 Division Avenue BK19 B
143 Classon Avenue BK17 A
202 Hewes Street BK16 A
239 Skillman Street BK15 A
555 Flushing Avenue BK14 A
463 Flushing Avenue BK14 A
349 East 138 Street BX13 A
717 Bedford Avenue BK12 A
721 Bedford Avenue BK12 A
713 Bedford Avenue BK12 A
664 Myrtle Avenue BK12 B
783 Bedford Avenue BK12 A
1503 Teller Avenue BX10 A
79 Skillman Street BK10 A
234 Greene Avenue BK10 B
804 Bedford Avenue BK10 A
584 Logan Street BK9 F
2737A Kingsbridge Terrace BX9 A
50 Skillman Street BK9 A
2735 Kingsbridge Terrace BX8 A
1408 47 Street BK8 A
2822 University Avenue BX8 A
739 Park Avenue BK8 A
197 Skillman Street BK8 A
198 Skillman Street BK8 B
755 Wythe Avenue BK8 A
1410 47 Street BK8 A
171 Franklin Avenue BK8 A
433 DeKalb Avenue BK8 B
1362 Prospect Avenue BX7 C
431 DeKalb Avenue BK7 C
148 Lynch Street BK6 A
1730 Greene Avenue QN6 B
59-23 71 Avenue QN6 C
595 Autumn Avenue BK6 D
865 Hegeman Avenue BK6 B
1724 Greene Avenue QN6 D
665 Miller Avenue BK6 D
740 Miller Avenue BK6 A
707 Miller Avenue BK6 D
21 Fayette Street BK6 A
132 Sheridan Avenue BK6 D
586 Hart Street BK6 B

showing 60 of 117 buildings

Sales, deeds & mortgages

Most recent mortgage recorded against this lot: $602,500 on 2021-03-25 (lender: Finwise Bank). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.

DateRecordAmountPer res. unit
2021-03-25Mortgage $602,500 — from 684 RIVERDALE AVENUE to FINWISE BANK $602,500
2019-07-05AL&R $937,500 — from SAM RIVERDALE LLC to SIGNATURE BANK $937,500
2019-07-05Agreement $937,500 — from SAM RIVERDALE LLC to SIGNATURE BANK $937,500
2018-04-19AL&R $780,000 — from SAM RIVERDALE LLC to KEARNY BANK $780,000
2018-04-19Agreement $780,000 — from SAM RIVERDALE LLC to KEARNY BANK $780,000
2018-04-19Mortgage $130,000 — from SAM RIVERDALE LLC to KEARNY BANK $130,000
2017-03-07Mortgage $650,000 — from SAM RIVERDALE LLC to ALPHA PARTNERS REAL ESTATE FUNDING LLC $650,000
2017-03-07Deed $640,000 — from KIZZY A. LAMONT, AS TRUSTEE; JOSEPH C. LAMONT, AS TRUSTEE; LAMONT, ALTON G; LAMONT, ERNEST to SAM RIVERDALE LLC $640,000
2017-02-17Sold for $640,000 $640,000 $128,000
2013-09-25Mortgage $300,000 — from LAMONT, ALTON G; LAMONT, ERNESTINE J to WELLS FARGO BANK, NATIONAL ASSOCIATION $300,000
2013-02-15Mortgage $180,000 — from LAMONT, ERNESTINE J; LAMONT, ALTON G to HARRISON VICKERS AND WATERMAN LLC $180,000
1996-11-22Mortgage $62,000 — from LAMONT, ALTON G; LAMONT, ERNESTINE J to DELTA FUNDING CORP $62,000

Ten-year activity

100500
2017
2018
2019
2020
53
2021
2022
2023
2024
2025
2026
EnforcementHousing & tenantsOwnership & money
Show as table
YearEnforcementHousing & tenantsOwnership & moneyTotal
20170044
2018017421
2019140445
20200505
2021052153
20220303
20230202
2024114419
2025242246
20260336
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The full timeline

Enforcement 12Housing & tenants 373Ownership & money 50Health & systems 8

Every one of the 443 recorded events, 1970–2026, 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