Building report

8510 21 Avenue · Brooklyn · BBL 3063460042 · generated 2026-10-20 · FREE Print / save PDF

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Where the penalty points come from

Open with the city right now

status snapshot refreshed weekly from HPD records

Patterns

8 heat or hot-water complaints in the last three years (winter 2025–26: 8).

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

$5,800 in enforcement penalties imposed (ECB/OATH) in the last three years.

What 311 hears from this address

13 service requests in the last three years. Most common: HEAT/HOT WATER (4) · Illegal Parking (2) · Food Poisoning (1) · General Construction/Plumbing (1) · Noise (1) · Building/Use (1).

Filed construction activity

$102,000 in permitted construction work filed since 2016 (2 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.

Rent-stabilization signals

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

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

What the city thinks it's worth

The city's market estimate has risen 5% between tax years 2025 and 2027.

Restaurants in this building

Report to 311: Food poisoning · Food safety complaint

1 restaurant · 1 with mice evidence · See them on the Mice Map

1 food-poisoning report to 311 at this address in the last three years (1 with three or more people sick) · complaints filed by the public; DOHMH investigates, outcomes aren't published.

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

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

8510 21 Avenue Copy address

13 311 service requests from this address in the last three years — 4 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.

Sales, deeds & mortgages

Most recent mortgage recorded against this lot: $1,297,702 on 2025-03-05 (lender: Eastbank, N.A.), 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.

Ten-year activity

Show as table

Year	Construction	Enforcement	Housing & tenants	Ownership & money	Health & systems	Total
2017	5	0	1	0	0	6
2018	0	0	1	0	0	1
2019	0	0	1	0	0	1
2020	0	0	2	0	0	2
2021	0	0	2	0	0	2
2022	0	0	1	0	0	1
2023	0	0	4	0	0	4
2024	0	0	0	0	1	1
2025	1	4	10	5	2	22
2026	0	3	9	0	0	12

The last 12 months — 19 records

The full timeline

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