RealtyLens
for saleRealtyLens property overview
$13,500,000

551 W 21st St Apt 16B

New York, NY, 10011
View more New York, NY property pages
3Beds
3.5Baths
3,860Sqft
$3497$/sqft

Market Insights

Above nearby median+16%

$3497/sqft vs a nearby median of $3029/sqft.

Nearby median$3029/sqft
Nearby properties12
Property size3,860 sqft
  • +16% versus the nearby median price per square foot.
  • Price history is limited, so current comps matter more than trend alone.
  • 3,860 sqft creates a usable price-per-square-foot read.

Pricing Read

Yardstick fair value$14M$13M$16M · 55% confidence
vs ask $14M−$891k (−6.6%)

Asking price is about 6.6% below the fair value — likely to draw competing offers if it's still on market.

$3,785/sqft median across 3 tight comps × 3,860 sqft= $15M
  • Special flood hazard zone−$292k −2.0%
  • Modern construction+$219k +1.5%
  • Open Class C HPD violations−$219k −1.5%
  • Transit access+$73k +0.5%
Cumulative NYC adjustments−$219k−1.5%

Property Read

FreshnessCurrent market data

The listing facts are current enough for an initial property review.

Market Position+16% vs nearby

The property is priced above the nearby median per square foot, so condition, building quality, and exact location need to justify the higher ask.

Price MovementInitial price point

Price history is still limited; review again as more market activity becomes available.

Diligence Read1 item to check
AI ReadinessReady to analyze
Assistant read

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Generated from the facts shown on this page and nearby market data. Not a professional appraisal.

Listing Details

Days on market
9 days
Last price change
No change recorded
Listed
May 3, 2026
Photos
31 photos
Property type
condos
Status
for sale

Photos

Building Facts

Year built
2013
Stories
20
Total units
46
Residential units
44
Building area
3.51 ac
Lot size
17,388 sqft
Land use
Mixed residential and commercial buildings
Building class
RM

From NYC public records where available.

Price History

May 4, 2026Initial record
$13,500,000for sale

Public Records

DOB violations2 open

45 total recorded against the building

HPD violations9 open

1 class C (immediately hazardous)

ACRIS documents0

Tax-lot deed, mortgage, and transfer records on file

311 calls (12 mo)23,486

Top: encampment

Top complaint types in ZIP 10011

  • Encampment3,789
  • Noise - Residential1,437
  • Illegal Parking1,317
  • Homeless Person Assistance1,218
  • HEAT/HOT WATER1,215

Recent DOB

  • Dec 1, 2024V-DOB VIOLATION - ACTIVE · EGRADE-FAILURE TO POST ENERGY GRADE/SCORE NONE
  • Dec 1, 2023V-DOB VIOLATION - ACTIVE · EGRADE-FAILURE TO POST ENERGY GRADE/SCORE NONE
  • Jan 20, 2020V*-DOB VIOLATION - Resolved · E-ELEVATOR ELEVATORREQUIRED
  • Jan 20, 2020V*-DOB VIOLATION - Resolved · E-ELEVATOR ELEVATORREQUIRED

Recent HPD

  • Mar 5, 2018Class A · § 329, M/D LAW AND DEPT. RULES AND REGS. PROVIDE A COMPLETED CERTIFICATE OF INSPECTION VISITS IN A PROPER FRAME AT OR NEAR MAILBOXES, BOTTOM EDGE OF FRAME BETWEEN 48-62 INCHES A...
  • Mar 5, 2018Class A · § 27-2104 ADM CODE POST AND MAINTAIN A PROPER SIGN ON WALL OF ENTRANCE STORY SHOWING THE REGISTRATION NUMBER ASSIGNED BY THE DEPARTMENT AND THE ADDRESS OF THE BUILDING. AT PUBLI...
  • Mar 5, 2018Class A · § 26-1103 ADMIN. CODE: POST AND MAINTAIN A PROPER NOTICE ON WALL OF THE ENTRANCE STORY IN ENGLISH AND SPANISH ON THE AVAILABILITY OF THE AGENCY S HOUSING INFORMATION GUIDE. A SA...
  • Mar 5, 2018Class C · § 27-2033 ADM CODE POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDINGS HEATING SYSTEM ....

Sourced from NYC Open Data (DOB, HPD, ACRIS). Updated as the city republishes — check the original source for live status.

You can also find this listing on StreetEasy.

Listing data sourced from streeteasy.com. RealtyLens enriches and contextualises it for you, but the original listing lives on the source.