Accountability infrastructure for NYC housing

Steven Croman — Owner Identity vs. Operational Nexus

JustFix · Who Owns What  vs.  the Watchline KG · 20 Prince Street
Analysis request Compare JustFix's Who Owns What portfolio for 20 Prince Street (Steven Croman) against the Watchline knowledge graph — and reconcile the two building counts it reports.

Two Answers, Both Right — 127 Buildings Owned, 135 in the Nexus

Who Owns What splits Steven Croman's 128 name-registered buildings across six portfolios. Watchline resolves this at two layers. The owner-identity layer reunites the fragments into one owner of 127 buildings — the figure the case file, map, and README use. The wider operational-nexus layer reaches 135, adding seven buildings registered to associates but tied to Croman by deed and LLC. Both are current and intentional; they answer different questions.

◆ The two layers, at a glance

127
Owner identity · OwnerGroup
Who owns Croman's buildings? The de-fragmented owner — reuniting the six portfolios Who Owns What splits his name across. The site's headline figure.
135
Operational nexus · Portfolio
What does he control? The wider nexus — the 127 he owns plus seven buildings registered to associates but tied to him by deed and LLC evidence.
6 → 1
WoW name-fragments → one owner
128
Registered to Croman by name (WoW)
127
Buildings he owns · owner identity
135
Buildings in his nexus · portfolio
+7
Associate-registered, added at the nexus layer
100
Evidence weight on each deed / LLC link

I. Three counts, reconciled

The numbers that look like a discrepancy are really three different questions:

CountQuestion it answersGrouping basisWhere it's used
128 · Who Owns Whatwho is named on the registrationexact name + business addressthe comparison target (6 portfolios)
127 · owner identitywho owns the buildingsdeed / LLC / name identity (OwnerGroup)site headline — case file, map, README
135 · operational nexuswhat he controls, incl. via associates+ associate attribution (Portfolio)this analysis's wider view

Owner identity (127) and the name set (128) are essentially the same buildings — the owner-identity layer's whole job is to reunite the fragments Who Owns What scatters. The nexus (135) is the one that goes wider.

II. Layer 1 — owner identity (127)

Who Owns What files Croman under six portfolios — the 118-building portfolio at 20 Prince St plus five strandees, split by business-address typos across his offices. Watchline's owner-identity layer (OwnerGroup) reunites them into one owner of 127 buildings:

WoW portfolioBuildingsLandlord-name slots
#87259  main1185
#8726053
#4624322
#8739511
#8739611
#8739711
WoW total (by name)128—
Watchline owner identity127one owner

This is the number the flagship case file, the interactive map, and the README report — one owner resolved across 115 differently-named LLCs into a 127-building portfolio.

III. Layer 2 — the operational nexus (135)

The nexus layer (Portfolio) keeps the 127 Croman owns and adds seven buildings Who Owns What never files under Croman at all — registered to two associates, Jeremy Tahari and Greg Bari. HPD lists the associate as head officer; Watchline's APPARENT_CONTROL ties the building to Croman on the deed and LLC record. These seven are in the nexus (135) but not the owner-identity group (127):

BuildingHPD head officerResolved controllerEvidence
1886 Park AvenueJeremy TahariSteven CromanACRIS deed · registered LLC
1888 Park AvenueJeremy TahariSteven CromanACRIS deed · registered LLC
515 West 47 StreetJeremy TahariSteven CromanACRIS deed · registered LLC
323 East 108 StreetJeremy TahariSteven CromanACRIS deed · registered LLC
154 East 117 StreetJeremy TahariSteven CromanACRIS deed · registered LLC
6 Avenue BGreg BariSteven CromanACRIS deed · registered LLC
347 East 105 StreetGreg BariSteven CromanACRIS deed · registered LLC
Evidence, not a shared-office guess Each of the seven carries a weight-100 CONNECTED_BY_DEED (ACRIS) or registered-llc link — the strongest identity signal in the graph, and a veil-pierce a name search structurally cannot make. Strip out every manually-curated link and all 135 buildings remain, held by automated deed / LLC / name / address evidence — the curation holds in no buildings on its own.

IV. Which number, when

  • 127 (owner identity) — use for “who owns Croman's buildings.” It's the precise, de-fragmented owner count, and the figure the public case file, map, and README carry.
  • 135 (operational nexus) — use for “what does Croman control,” including buildings held through associate registrations that the deed/LLC record ties back to him.
  • 128 (Who Owns What) — the name-based comparison point: the same operator, fractured across six portfolios by registration typos.
A moving figure, honestly The nexus count (135) is as of the 2026-09-10 KG run and moves as resolution improves; the owner-identity headline (127) is the stable, curated figure. Every ownership link here is an algorithmic inference from public records — an investigative lead to verify, not a determination of legal ownership.

V. Method & provenance

BBL 1004930017 · 20 PRINCE STREET OwnerGroup OG-105462 · 127 Portfolio PF-20260910T095723Z-37358 · 135 run 20260910T095723Z
  • Owner identity (127): Croman's OwnerGroup (IN_OWNER_GROUP) — the union of his resolved landlord nodes' buildings.
  • Nexus (135): the Portfolio at 20 Prince St (IN_PORTFOLIO); it contains the owner-identity set plus the seven associate-registered buildings, whose APPARENT_CONTROL resolves to Croman via weight-100 deed/LLC edges.
  • Who Owns What (128): wow_portfolios for every portfolio carrying a Croman name — six portfolios, 128 distinct BBLs.
  • Reference: whoownswhat.justfix.org — 20 Prince Street
The 127 and 135 figures are two layers of the same model, not a discrepancy: 127 is owner identity (who owns), 135 is the operational nexus (what he controls, including associate-registered buildings). Counts as of the 2026-09-10 run.