What the listing does not show
2271 Knapp Street #3E
in 2271 Knapp StreetBrooklyn, NY 11229Co-opHigh risk
Listed at $229,000. The listing does not mention what city records show: 70 open housing violations, 12 of them immediately hazardous. A buyer can put that on the table before contract. A seller should expect the question.
- Asking
- $229,000
- Beds
- 2 beds
- Baths
- 1 bath
- Size
- 950 ft²
- Building
- Co-op
- Built
- 1953
- Open housing violations
- 70
- Immediately hazardous
- 12
- Open building violations
- 4
- Unresolved penalties
- 1
01 / Findings
What to ask about
City records a buyer can raise and a seller should be ready to explain. A reading of open filings, not a forecast.
- 0112 open Class C (immediately hazardous) housing violations a buyer can raise, and a seller should be ready to explain.
- 024 open Buildings Department violations, which can slow a closing.
- 031 unresolved penalty (1 hazardous) that can follow the property into the sale.
- 04Inside a FEMA 100-year flood zone, which can change insurance and what a lender will accept.
- 054 co-op share transfers in the last 12 months. Co-op sales are not recorded as deeds, so they show up only here.
- 062 tax lien documents on record.
02 / Building
The building
City records for 2271 Knapp Street, the building this listing is in. Department of Finance class D4: Elevator apartments.
- Type
- Co-op
- Year built
- 1953
- Floors
- 6
- Units
- 162162 residential
- Building area
- 174,580 ft²
- Residential / commercial
- 174,580 / 0 ft²
- Lot
- 84,200 ft²484.25 × 200 ft
- Assessed value
- $7,610,400Tax assessment, not market value
- Assessed land
- $688,500
- Tax exemption
- $666,117
04 / Checked
What was checked
A zero means the file exists and is clear. A dash means the city has no file for this address, which is not the same thing.
Housing (HPD)
70
open violations
12 immediately hazardous, 47 hazardous, 11 non-hazardous, 0 informational.
Registration recently lapsed, ended Sep 1, 2026. Owner state NY.
Buildings (DOB)
4
open violations
7 safety-related. Most recent open filing Sep 2, 2020.
Permits, unsafe structures, boilers, elevators, facades.
Penalties (ECB)
1
unresolved
1 hazardous. $8,687 imposed, last issued Oct 1, 2024.
Unpaid balance
05 / Full report
Not on the listing
Sale prices, mortgage amounts and document amounts the city has on file. The listing does not include them.
207 recorded documents · 0 sales of $10,000 or more · Last sale none · Last mortgage 2022
Unlock the recorded amounts for 2271 Knapp Street #3E
After you register, the paid report includes who owns the building, plus the amounts below from the city file.
- Owner details
- Mortgage amount
- Unpaid penalty balance
Paid report
The rest of 2271 Knapp Street #3E is not on the listing
After you register, the paid report names the owner. It also includes the city-file amounts the listing leaves out.
- Owner details
- Mortgage amount
- Unpaid penalty balance
Same building
Other listings at 2271 Knapp Street
06 / FAQ
Questions
How many open violations does 2271 Knapp Street #3E have?
As of Oct 6, 2026, the building at 2271 Knapp Street has 70 open HPD violations (12 Class C, 47 Class B, 11 Class A, 0 Class I), 4 open DOB violations, 1 unresolved ECB penalties. These are building records, so they apply to this listing.
Is this property in a flood zone?
Yes. The lot falls inside a FEMA 100-year flood zone on at least one of the 2007 or 2015 maps, which can affect insurance cost and lender requirements.
What amounts are recorded for 2271 Knapp Street?
Owner details are in the paid report, available after you register. Mortgage amount, Unpaid penalty balance are in the city file and included there too.
Where does this data come from?
Records are combined from NYC DCP PLUTO (tax lot, zoning, FAR); NYC HPD (housing violations and registrations); NYC DOB and ECB (building violations and penalties); NYC ACRIS (recorded deeds, mortgages and satisfactions); Active for-sale listings. PLUTO version 26v2.
Sources
NYC DCP PLUTO (tax lot, zoning, FAR) · NYC HPD (housing violations and registrations) · NYC DOB and ECB (building violations and penalties) · NYC ACRIS (recorded deeds, mortgages and satisfactions) · Active for-sale listings
PLUTO 26v2, refreshed Oct 6, 2026. Written for people buying or selling this property. Not legal, tax, or appraisal advice. Confirm the details with the city before you offer or list.