What the listing does not show
823 Park Avenue #4
in 823 Park AvenueManhattan, NY 10021CondominiumHigh risk
Listed at $12,750,000. The listing does not mention what city records show: 1 open housing violations, 1 of them immediately hazardous. A buyer can put that on the table before contract. A seller should expect the question.
- Asking
- $12,750,000
- Beds
- 5 beds
- Baths
- 4.5 baths
- Size
- 4,184 ft²
- Building
- Condominium
- Built
- 1911
- Open housing violations
- 1
- Immediately hazardous
- 1
- Open building violations
- 28
- Unresolved penalties
- 0
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.
- 011 open Class C (immediately hazardous) housing violation a buyer can raise, and a seller should be ready to explain.
- 0228 open Buildings Department violations, which can slow a closing.
- 03Checked: no unresolved penalties on file.
- 04In the Upper East Side Historic District, so exterior changes are restricted.
02 / Building
The building
City records for 823 Park Avenue, the building this listing is in. Department of Finance class R4: Condominium.
- Type
- Condominium
- Year built
- 1911Alterations: 1989, 2007
- Floors
- 13
- Units
- 1111 residential
- Building area
- 52,480 ft²
- Residential / commercial
- 52,480 / 0 ft²
- Lot
- 6,000 ft²60 × 100 ft
- Assessed value
- $7,364,252Tax assessment, not market value
- Assessed land
- $1,125,001
- Tax exemption
- None
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)
1
open violations
1 immediately hazardous, 0 hazardous, 0 non-hazardous, 0 informational.
Registration recently lapsed, ended Sep 1, 2026. Owner state NY.
Buildings (DOB)
28
open violations
1 safety-related. Most recent open filing Jan 9, 2017.
Permits, unsafe structures, boilers, elevators, facades.
Penalties (ECB)
0
unresolved
No unresolved penalties on file.
05 / Full report
Not on the listing
How many documents and sales the city has on file for this building.
Condominium sales are recorded unit by unit, so deeds and mortgages are not combined for the whole building.
06 / FAQ
Questions
How many open violations does 823 Park Avenue #4 have?
As of Oct 6, 2026, the building at 823 Park Avenue has 1 open HPD violations (1 Class C, 0 Class B, 0 Class A, 0 Class I), 28 open DOB violations, 0 unresolved ECB penalties. These are building records, so they apply to this listing.
Is this property in a flood zone?
No. The lot is not inside a FEMA 100-year flood zone on the 2007 or 2015 maps.
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.