April 2026 · 10 min read
Related-party transactions — transfers between entities that share common ownership, management, or control — are a routine part of real estate investment. Investors restructure portfolios, move properties between entities for tax or liability reasons, and transfer assets as part of estate planning. None of this is inherently problematic.
The due diligence challenge is recognizing when a transaction involves related parties, because the relationship is often not visible on the face of the documents. Two LLCs with different names, different registered agents, and different formation dates may be controlled by the same individual. Without systematic analysis, the relationship is invisible to counterparties.
This checklist provides a step-by-step process for identifying related-party relationships and entity networks using publicly available data. Each step can be performed manually for a single transaction or systematically at scale using ownership concentration data.
Start with the recorded deed. Confirm the exact legal name of the grantee (current owner) or both parties in a pending transaction. Note the entity type (LLC, Corporation, Trust, LP) and the exact spelling, including any state designation (e.g., "a Missouri limited liability company").
What to look for: Recently formed entities (check the formation date with the Secretary of State). Entities formed within days or weeks of the transaction may have been created specifically for this deal, which is standard practice but worth noting. Also check whether the entity is in good standing — a dissolved or forfeited entity cannot legally hold or transfer title in most jurisdictions.
Look up the entity's owner mailing address in the county assessor records. Then search the assessor database for all other properties that list the same mailing address. This is the core of ownership concentration analysis — how many different entity names share this address?
What to look for: Three or more distinct entity names at the same mailing address indicate an ownership concentration cluster. If the counterparty in a transaction (buyer or seller) shares a mailing address with the other party, the transaction may involve related parties. County-level ownership intelligence reports automate this lookup across all parcels in the jurisdiction.
The Missouri Secretary of State's business entity search (bsd.sos.mo.gov) provides formation date, status, registered agent name, and registered agent address for every LLC and corporation formed in Missouri. Search for the entity name and record the registered agent information.
What to look for: The registered agent's name and address. Many investors use the same registered agent for all their entities. If the registered agent is a commercial service (CT Corporation, National Registered Agents, CSC), that is standard practice. If the registered agent is an individual or a law firm, note the name — it may appear as the agent for multiple related entities.
Search the Secretary of State database for all entities listing the same registered agent or registered agent address. This reveals the full network of entities managed by the same agent, which may indicate common ownership or a shared legal advisor.
What to look for: If a personal name (not a commercial agent service) serves as registered agent for 10+ entities that also hold real property, that individual is likely the beneficial owner or principal behind the entity network. Cross-reference these entity names against the county assessor records to see their combined property holdings.
Missouri LLC articles of organization do not require disclosure of members. However, some entities voluntarily list members or managers in their filings, annual reports, or operating agreements recorded with the county. For corporations, officer and director names are available in the annual report filed with the Secretary of State.
What to look for: The same individual appearing as organizer, manager, or officer across multiple entities. Even if membership is not disclosed, the organizer name on the articles of organization (the person who filed the paperwork) can indicate a connection. The same attorney appearing as organizer for multiple entities suggests they share a client.
Pull the deed history for the subject property from the county recorder's records. Identify all transfers in the chain of title, noting the deed type for each (warranty deed, special warranty deed, quitclaim deed, trustee's deed).
What to look for: Quitclaim deeds between entities at the same mailing address are a strong indicator of related-party transfers. Quitclaim deeds are cheaper and faster than warranty deeds because they do not include title warranties — which makes sense between related parties who do not need to warrant title to themselves. Multiple quitclaim deeds in rapid succession may indicate portfolio restructuring.
Check whether the subject property or any other properties owned by entities in the same cluster have delinquent property taxes. Tax delinquency records are public and available from the county collector's office.
What to look for: Tax delinquency at one property in a multi-entity network may signal cash flow stress across the entire portfolio. If an investor's 30-entity network has tax delinquencies on 10 properties, the remaining 20 properties may also be at risk — even if they are currently paid up. This is portfolio-level risk that individual property lookups cannot surface.
Search the Missouri Case.net system (casenet.courts.mo.gov) for the entity name, related entity names, and the registered agent. Civil court records reveal lawsuits, judgments, and liens that may affect the entity or its network.
What to look for: Patterns of tenant lawsuits, code violation cases, or creditor actions against multiple entities in the same network. A single lawsuit against one LLC is unremarkable. Ten lawsuits against ten different LLCs that share a mailing address reveals a pattern that may affect the reliability of any entity in the network as a counterparty.
The checklist above is designed for individual transaction review — a title company examining a single closing, a lender underwriting a single loan, or an investor evaluating a single acquisition target. Each step can be performed manually using publicly available online databases.
For professionals who process multiple transactions per week or who need to evaluate an entire portfolio against related-party risk, the manual approach does not scale. This is where county-level ownership intelligence reports provide leverage. A single CSV file containing every entity in every ownership concentration cluster for the entire county allows steps 2 and 4 to be performed as simple lookups rather than manual research projects.
Import the CSV into Excel, search for any entity name or mailing address, and instantly see the full cluster context — how many other entities share the address, what properties they hold, and what concentration indicators are present. The research that would take hours per transaction takes seconds per lookup.
This checklist identifies patterns that may indicate related-party relationships. Patterns are not proof. Many legitimate business structures create the same patterns — shared office buildings, common use of commercial registered agents, and standard corporate structuring all produce signals that resemble related-party activity.
The purpose of due diligence is not to prove or disprove wrongdoing. It is to ensure that decisions are made with adequate information. When a transaction involves entities that share a mailing address, that context is relevant to the decision-maker — even when the explanation is entirely benign.
Nothing in this checklist constitutes legal advice. Professionals should consult qualified attorneys for guidance on specific transactions and compliance requirements.
The companion CSV lets you check any entity or address against the full county dataset in seconds. Every cluster, every entity, every parcel.
View County ReportsSee the data in action — browse our county ownership intelligence reports.
Related reading: Title Company Due Diligence · LLC Networks in Missouri