Building report

520 Kosciuszko Street · Brooklyn · BBL 3016070016 · generated 2026-10-20 · FREE Print / save PDF

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Where the penalty points come from

Open with the city right now

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.

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

2 service requests in the last three years. Most common: Illegal Fireworks (1) · Water System (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

2 of 3 signals present. Buildings receiving 421-a or J-51 benefits are generally required to register their units as rent-stabilized for the duration of the benefit. 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

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

What the city thinks it's worth

The city's market estimate has fallen 26% between tax years 2025 and 2027.

Tax exemptions on the roll: J51

Flood exposure

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.

Getting around

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

520 Kosciuszko Street Copy address

2 311 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 NASHER REALTY ASSOCIATES, INC. — 35 buildings, 285 units. Grades across the portfolio: A4 · B7 · C10 · D10 · F4. See the whole portfolio

Sales, deeds & mortgages

Most recent mortgage recorded against this lot: $2,450,000 on 2022-01-13 (lender: Connectone Bank), covering 6 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.

Ten-year activity

Show as table

Year	Enforcement	Housing & tenants	Ownership & money	Health & systems	Total
2017	0	2	0	2	4
2018	0	1	0	2	3
2019	1	1	0	2	4
2020	0	2	1	1	4
2021	0	3	1	2	6
2022	0	5	4	3	12
2023	0	4	0	4	8
2024	0	2	5	3	10
2025	0	4	0	4	8
2026	0	3	0	2	5

The last 12 months — 6 records

The full timeline

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