Fewer than 15% of LL97-covered buildings are on track to meet 2030 carbon limits · 20% of NYC contractors account for 80% of all active stop-work orders · Buildings that miss one ECB hearing accumulate 3× more violations within two years · NYC's 50 largest residential landlords operate through 1,200+ distinct LLC entities · Unexpected subsurface conditions are a documented cost factor in 1 in 4 Lower Manhattan excavations
Entity Intelligence / NYC Construction Graph

Every Entity.
Every Exposure.
Every Connection.

BuildNYC maintains a live graph of 4.2 million NYC construction entities — buildings, ownership structures, contractors, violations, and deeds — mapped across every municipal dataset the city produces. Relationships invisible to title search are standard query output here.

The graph knows.
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Traversal Example — [Acquisition Target] → Beneficial Ownership Resolution
Subject Property
[ACQUISITION TARGET]
Manhattan CB5
ACRIS deed
Titleholder LLC
[Target Entity] LLC
Formed 2018
NYS DOS reg. agent
Co-registered entity
W38 Holdings LLC
3 open ECB violations
Co-registered entity
Metro Dev Group LLC
No violations
Related property
[Related Property]
$3.8M mechanic's lien
HPD registration
Beneficial Owner
M. Castellano
9 entities · 14 properties
Traverse: Ownership Chain
Ownership Chain
Starting from a tax lot, BuildNYC resolves the controlling LLC through DOB permit registration and ACRIS deed records, then traverses registered agent filings to surface co-registered entities sharing legal infrastructure. Each node in the chain is cross-referenced against HPD registration records, ECB violation rolls, and open lien filings. A building held by a single-purpose vehicle rarely stays single-purpose under traversal — the graph typically surfaces 3–9 related entities, associated properties, and the debt and enforcement history those entities carry.
Tax Lot Deed / ACRIS LLC Titleholder Reg. Agent / DOS Co-registered Entities Lien & Enforcement Exposure
Traverse: Contractor Exposure Network
Contractor Exposure Network
A contractor of record on a target acquisition is simultaneously a node in every other project in the BuildNYC graph where that entity appears. Traversal surfaces their full permit history across BIS and DOB NOW filings, maps associated ECB violations by project and violation class, and flags any stop-work orders active on concurrent jobs. Before a GC is under contract, the platform has already traced their exposure across the portfolio — not from references, from municipal record.
GC Name / License BIS + DOB NOW Jobs All Active Projects ECB Violations per Job SWO + Failure Rate
Traverse: Beneficial Owner Resolution
Beneficial Owner Resolution
When acquisition targets are controlled by layered holding structures, standard due diligence terminates at the first legal entity. BuildNYC continues the traversal: shared registered agents, common principal addresses drawn from HPD registrations, co-signatories appearing across ACRIS instruments, and prior entity names carried in historical DOB filings. The resolution is algorithmic, not interpretive — the graph either closes the loop or it does not.
Entity Name ACRIS Instruments DOS Registration HPD Principals Prior Entity Names Beneficial Owner
Traverse: Cross-Portfolio Risk Propagation
Cross-Portfolio Risk Propagation
A violation issued against a contractor on one project is a signal about every other project that contractor is currently executing. BuildNYC maps that signal forward across the ownership graph: which buildings in your portfolio or pipeline share that contractor, which of those buildings are in active permit status, and what the ECB enforcement history looks like on comparable jobs. Risk is not siloed to the asset where it was first observed — this traversal makes that explicit.
Violation Event Respondent Entity All Active Permits Shared Ownership Nodes Portfolio Exposure
Intelligence Scenarios
What the graph surfaces
Scenario 01 / Pre-Acquisition
The Clean Acquisition That Wasn't
An acquisitions team completes standard title review on a mid-block development site. The controlling entity shows one active deed, no open judgments, no ECB violations. Title insurance is committed. The deal is moving toward LOI.
BuildNYC traversal identifies six co-registered LLCs through shared HPD registration principals, traces a prior ownership entity through a 2019 name change, and surfaces a $3.8M mechanic's lien on a related property with cross-default language extending to all entities under common control.
Deal repriced. $3.8M exposure surfaced pre-LOI.
Scenario 02 / GC Selection
The Reference That Wouldn't Have Mattered
A development team is finalizing GC selection on a $140M ground-up project. The shortlisted contractor presents a reference list with no disclosed issues. Due diligence has been conducted through standard channels — calls, financials, insurance certificates.
BuildNYC traversal across BIS and DOB NOW identifies four concurrent active jobs for the same entity, three open ECB Class 1 violations on two of those sites, and a stop-work order issued eleven days prior — none disclosed. The references were accurate. The graph was more complete.
GC disqualified. $140M project protected.
Scenario 03 / Distressed Debt
The Portfolio Exposure From One Note
An asset manager is evaluating a distressed note on a mixed-use building. The borrower entity appears clean in isolation — no open violations, no active litigation, a current HPD registration. The note reflects a single asset.
Graph traversal through ACRIS cross-ownership and HPD registration records connects the controlling principal to 14 additional properties: 9 with active HPD violations, 4 in active Housing Court proceedings, 2 with outstanding ECB penalties exceeding $600K. The note reflects one asset. The exposure is a portfolio.
14-property exposure identified. Note acquisition reconsidered.
The graph knows.
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A BuildNYC analyst will walk you through a live traversal on a building in your pipeline — ownership resolution, contractor exposure, and cross-portfolio risk in a single session.

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