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Property overview

134 East 71 Street

Manhattan, NY 10021

Who owns 134 East 71 Street, what the county and city have on record, and a measured sell-signal score — every fact dated and sourced.

Owner of recordCatherine M. Cosgrove, TrusteeMailing address: not published by the CityObserved Sep 19, 2026 · NYC Department of City Planning ZoLa (MapPLUTO)
Parcel 1014050059 · Public research profile
Motivated Seller IndexDRAFT MODEL
58/100
About 1.5 in 100 homes with these signals sold within four months (1.4× the New York City rate)100% of model checks have usable evidence

A measured sell-signal score from public records: 3 positive signals observed. It is a base rate for homes like this, not a statement about this owner. How it works ↓

Aerial 2024 with parcel boundary · NYC OTI
Assessed value$918,180 total (land $440,640); tax class 1 is assessed at 6% of market value
Tax statusUnverified
Ownership tenureUnverified
Property typeCity residence one-family (DOF class A4), 4 floors, 1 residential unit

THE INDEX

Why this MSI reads 58

Draft model

5 of 22 checked public signals observed, covering 100% of the model. The score is public; the signal-by-signal reasons, source documents, and owner details are in LienSuite.

Method and limits. MSI v0.2-nyc-2026-09 weights twenty-two public signals by how much each one changed the recorded four-month arm’s-length sale rate across all 636,000 privately owned one- to three-family lots in the five boroughs, checked on a holdout the model never saw (the top 0.5% of homes by score sold at 5.7x the citywide rate, the top 1% at 4.1x). Owner mailing addresses are not public in New York City, so absentee and out-of-state ownership are not part of this model.: new-building permit +27, trade permit +18, lien-sale notice (water/sewer) +13, lien-sale notice (property tax) +12, demolition permit +12, bought since 2024 +9, heat / hot-water violation +9, unsanitary / dirty / rodent complaint +8, hpd class b violation +6, construction / plumbing complaint +6, late-stage lien notice (30- or 10-day) +6, general-construction permit +4, star exemption (owner-occupied) +4, maintenance complaint +3, hpd class c violation +2, two or three units -3, structural violation -4, vermin / garbage violation -7, sidewalk shed / scaffold / fence permit -9, solar permit -12, structural / safety complaint -12, permit valued at $50,000 or more -14. The "in 100 homes" figure is the model's fitted probability for this combination of signals. It describes homes like this one in aggregate; it is not a claim about this owner's intentions, and it is not LienSuite's paid deal score.

THE RECORD

Property details

Dated sources
Property type
City residence one-family (DOF class A4), 4 floors, 1 residential unit
Observed Sep 19, 2026 · NYC Department of City Planning ZoLa (MapPLUTO)
Owner of record
Catherine M. Cosgrove, Trustee (mailing address not published by the City)
Observed Sep 19, 2026 · NYC Department of City Planning ZoLa (MapPLUTO)
Assessed value
$918,180 total (land $440,640); tax class 1 is assessed at 6% of market value
Observed Sep 19, 2026 · NYC Department of Finance property records
STAR exemption
None on file for tax year 2026
Observed Sep 19, 2026 · DOF property exemption detail (NYC Open Data)
Building area
7,591 sq ft (6,326 residential)
Observed Sep 19, 2026 · NYC Department of City Planning ZoLa (MapPLUTO)
Lot size
2,310 sq ft
Observed Sep 19, 2026 · NYC Department of City Planning ZoLa (MapPLUTO)
Year built
1885
Observed Sep 19, 2026 · NYC Department of City Planning ZoLa (MapPLUTO)
Last recorded sale
$16,675,000, March 10, 2026
Observed Sep 19, 2026 · DOF annualized and rolling property sales (NYC Open Data)
Building permits
6 DOB permits in the last 12 months: general construction (this alteration is being filed for the interior renovation of a single family re) issued April 30, 2026; mechanical systems (this alteration application is being filed for the mechanical work at the subjec) issued September 17, 2026; plumbing (this alteration is being filed for the plumbing work at the subject premises as ) issued September 16, 2026; …
Observed Sep 19, 2026 · DOB NOW approved permits (NYC Open Data)

Parcel reference: 1014050059. Facts reflect the listed observation dates and may have changed since then.

OWNERSHIP AND TAXES

Research snapshot

Observed tax balanceNot verified
Delinquency periodNot verified
Last recorded transferNot connected
Transfer amountNot connected

Source details not yet connected. A tax balance is not proof that a property is for sale.

CHANGES OVER TIME

Property timeline

  1. Permit: Mechanical Systems

    This Alteration application is being filed for the mechanical work at the subject premises as per plans submitted herewith. There are no change in use, egress or occupancy under this application..

    DOB NOW approved permits (NYC Open Data) · checked Sep 19, 2026
  2. Permit: Plumbing

    This alteration is being filed for the plumbing work at the subject premises as per plans submitted herewith. There are no change in use, egress or occupancy..

    DOB NOW approved permits (NYC Open Data) · checked Sep 19, 2026
  3. Permit: General Construction

    This Alteration is being filed for the interior renovation of a single family residence. There are no c hang in use, egress or occupancy..

    DOB NOW approved permits (NYC Open Data) · checked Sep 19, 2026
  4. Recorded sale

    $16,675,000.

    DOF annualized and rolling property sales (NYC Open Data) · checked Sep 19, 2026

NEARBY

More records nearby

Facts on this page reflect their observation dates. Confirm the parcel and current records with the county before acting.