Building report

21 Commercial Street · Brooklyn · BBL 3024727501 · 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

199 heat or hot-water complaints in the last three years (winter 2023–24: 2 · winter 2024–25: 42 · winter 2025–26: 110 · winter 2026–27: 2). Repeated winter clusters suggest a chronic heating problem.

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

What 311 hears from this address

635 service requests in the last three years. Most common: Illegal Parking (430) · HEAT/HOT WATER (99) · Noise (26) · Rodent (8) · Dirty Condition (7) · UNSANITARY CONDITION (6).

Filed construction activity

$478,350 in permitted construction work filed since 2016 (11 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 2% between tax years 2025 and 2027.

Tax exemptions on the roll: 420C

For property tax, the Department of Finance values this condo as if it were a rental building. Its 2021 estimate: gross income $3,598,690 a year ($43.63 per sq ft), operating expenses $828,119 ($10.04 per sq ft), net operating income $2,770,570. These are the city's estimates from comparable rentals, not the building's actual budget, rents or maintenance charges.

Building systems

Restaurants in this building

Report to 311: Food poisoning · Food safety complaint

1 restaurant · 0 with mice evidence · See them on the Mice Map

4 Food Establishment complaints to 311 at this address in the last three years (most often: No Permit or License, Pet/Animal) · 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 2 of 6 — zone 1 evacuates first.

Not in the city's stormwater (cloudburst) flood maps under any modeled scenario.

1 street-flooding or sewer-backup complaints at this address since 2026 (1 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.

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

21 Commercial Street Copy address

635 311 service requests from this address in the last three years — 99 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.

The landlord's report card

Managed by C&C APARTMENT MANAGEMENT — 215 buildings, 23,722 units. Grades across the portfolio: A53 · B80 · C52 · D24 · F4. See the whole portfolio

showing 60 of 215 buildings

Ten-year activity

Show as table

Year	Construction	Enforcement	Housing & tenants	Ownership & money	Health & systems	Total
2017	3	1	43	1	0	48
2018	1	0	35	3	0	39
2019	1	2	29	0	0	32
2020	10	0	55	0	1	66
2021	0	0	57	30	1	88
2022	0	0	55	9	0	64
2023	0	1	129	18	2	150
2024	0	0	187	0	1	188
2025	0	0	179	6	4	189
2026	0	0	362	3	2	367

The last 12 months — 417 records

showing the 80 most recent

The full timeline

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