What the listing does not show
436 West 20th Street MANSION
in 436 West 20th StreetManhattan, NY 10011Walk-up apartment buildingModerate risk
Listed at $30,000,000. The listing does not mention what city records show: 1 open building violation. Read them before you offer, and be ready to explain them if you are selling.
- Asking
- $30,000,000
- Beds
- 7 beds
- Baths
- 8 baths
- Size
- 10,160 ft²
- Building
- Walk-up apartment building
- Built
- 1835
- Open housing violations
- 0
- Immediately hazardous
- 0
- Open building violations
- 1
- 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.
- 01Checked: no open housing violations on file.
- 021 open Buildings Department violation, which can slow a closing.
- 03Checked: no unresolved penalties on file.
- 04The housing registration lists the owner as absentee.
- 05In the Chelsea Historic District, so exterior changes are restricted.
- 06Inside a FEMA 100-year flood zone, which can change insurance and what a lender will accept.
- 073 tax lien documents on record.
02 / Building
The building
City records for 436 West 20th Street, the building this listing is in. Department of Finance class C1: Walk-up apartments.
- Type
- Walk-up apartment building
- Year built
- 1835Alterations: 2023
- Floors
- 5
- Units
- 77 residential
- Building area
- 5,247 ft²
- Residential / commercial
- 5,247 / 0 ft²
- Lot
- 2,574 ft²24.75 × 104 ft
- Assessed value
- $2,176,200Tax assessment, not market value
- Assessed land
- $266,850
- 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)
0
open violations
No open housing violations on file.
Registration recently lapsed, ended Sep 1, 2026. Owner state FL.
Buildings (DOB)
1
open violations
6 safety-related. Most recent open filing Apr 27, 2009.
Permits, unsafe structures, boilers, elevators, facades.
Penalties (ECB)
0
unresolved
No unresolved penalties on file.
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.
34 recorded documents · 4 sales of $10,000 or more · Last sale 2008 · Last mortgage 2023
Unlock the recorded amounts for 436 West 20th Street MANSION
After you register, the paid report includes who owns the building, plus the amounts below from the city file.
- Owner details
- Last sale price
- Mortgage amount
- Unpaid penalty balance
- Recorded document amounts
Paid report
The rest of 436 West 20th Street MANSION 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
- Last sale price
- Mortgage amount
- Unpaid penalty balance
- Recorded document amounts
06 / FAQ
Questions
How many open violations does 436 West 20th Street MANSION have?
As of Oct 21, 2026, the building at 436 West 20th Street has 0 open HPD violations (0 Class C, 0 Class B, 0 Class A, 0 Class I), 1 open DOB violations, 0 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 436 West 20th Street?
Owner details are in the paid report, available after you register. Last sale price, Mortgage amount, Unpaid penalty balance, Recorded document amounts 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 21, 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.