Background Checks: What a PI Can Find

A private investigator conducting a background check generally draws on public records — court filings, property records, business registrations — plus direct verification of employment and education. What a PI can find depends on which records are public, which are sealed or restricted, and what rules apply when the check is tied to employment.

Key takeaways

A background check is assembled from many small records. Court filings, property records, business registrations, and professional licenses each contribute pieces — no single database holds everything.
Verification is often more valuable than volume. Confirming education and employment through direct channels is typically more reliable than aggregated data.
Some records are genuinely off limits. Sealed or expunged records, and records a court has restricted, are not available to investigators.
Employment screening follows federal rules. The Fair Credit Reporting Act sets standards when background checks are used for hiring decisions.
Licensing rules vary by state. Who may perform checks for hire, and how they must handle information, depends on your state’s requirements.

What a background check means in investigative work

When people say “background check,” they often imagine a single report that reveals everything about a person. In investigative work, the reality is different: a background check is a process of gathering information from many separate sources and assembling it into a coherent picture. An investigator starts with identifying information — names used, dates of birth, addresses — and then consults the sources that plausibly hold records connected to that identity. Each source answers a narrow question, and the answers are checked against one another.

This is also where a background check fits inside the broader profession. As our overview of what a private investigator does explains, investigation is largely information work: records research, interviews, and careful cross-checking. A background check is one application of that information work, focused on a person’s history rather than on their current activities. Understanding it this way sets realistic expectations: the output is only as complete as the records consulted, and no report can certify it found everything.

A third point worth absorbing early: investigators are bound by the same legal boundaries as everyone else when it comes to records. Public records are public; private records require proper authorization or legal process. An investigator cannot reach past those lines simply because a client is paying. Any promise that a check will uncover “everything, without exception” is itself a warning sign, and it is worth reading our red-flags guidance if you ever hear one.

The kinds of records that are generally accessible

The backbone of most background checks is public records — information that government bodies make available by law. Court records are the most commonly consulted category: civil lawsuits, criminal case filings where they are public, judgments, and liens filed against a person. These live in county courthouses, state court systems, and federal court databases, and the practical challenge is knowing which courts to check, since a person may have records in several jurisdictions.

Property records are another major category. Deeds, mortgages, and tax assessments are generally matters of public record, and they can establish where a person has owned property and when. Business filings — articles of incorporation, assumed-name registrations, corporate officer listings — come from state agencies and can show business associations. Professional license records, voter registration in some jurisdictions, and bankruptcy filings in federal court are additional sources investigators may consult when relevant to the question at hand.

What matters is not the size of this list but its fragmentation. There is no national master file of public records that an investigator queries once and receives a complete answer. Records are scattered across counties, states, and federal systems, each with its own indexing and access rules. Much of the professional value in a background check lies in knowing which sources to consult for a given question and in interpreting what is found — and what is missing — with appropriate caution.

Employment and education verification as a concept

Separate from records research is verification: confirming claims a person has made about their own history. The most common form is employment verification — contacting former employers to confirm job titles and dates of employment. Education verification works similarly, confirming degrees or attendance through the institutions themselves. Investigators may also verify professional licenses, certifications, and military service records where the relevant agencies permit it.

Verification matters because records and claims can diverge. A resume may list a title that the employer’s files do not support; a degree may be claimed from an institution that has no record of the person. These discrepancies do not automatically indicate wrongdoing — memories are imperfect and titles change — but they are exactly the kind of gap a background check is designed to surface. Direct verification through the source is generally more reliable than relying on aggregated databases, which can carry stale or mismatched entries.

There are practical limits here too. Former employers often confirm only basic facts as a matter of policy. Educational institutions have their own privacy rules about what they release and to whom. An investigator works within these policies, not around them. If you are considering a background check for a hiring decision, keep in mind that federal rules add another layer of requirements, which the final section of this article explains.

The honest limits: sealed, restricted, and unavailable records

A responsible discussion of background checks must include what they cannot find. Court records that have been sealed or expunged are not available — that is the point of sealing them. Juvenile records are generally restricted. Medical records are protected by privacy law and are not something an investigator can obtain without proper authorization. Financial account details, tax returns, and similar private information sit behind their own legal protections.

It is also important to understand that “not found” does not mean “does not exist.” An investigator may miss a record because it sits in a jurisdiction nobody thought to check, because names were spelled differently across systems, or because the record predates digitization. A careful report will distinguish between “searched and found nothing” and “not searched,” and it will name the jurisdictions and sources consulted. That transparency is what separates a professional product from a generic printout.

These limits apply across the profession. In missing persons investigations, for example, the same records-research skills are used with a different goal — locating a person rather than evaluating a history — and the same boundaries around sealed and restricted records apply. The tools are similar; the objective and the expectations are different. Anyone describing background checks as unlimited in scope is describing something other than lawful investigative work.

The FCRA concept and employment screening

When a background check is used for employment purposes — deciding whether to hire someone — a federal law called the Fair Credit Reporting Act (FCRA) becomes relevant. The FCRA sets rules for consumer reports used in hiring: it requires the employer’s written authorization from the person being checked, requires that the person be notified before an adverse decision is made based on the report, and gives the person a chance to dispute inaccurate information. These are concepts, not legal advice, and the details matter in practice.

Why does this matter to someone reading about private investigators? Because investigators who provide reports for employment screening must operate within this framework, and employers who use those reports carry obligations of their own. The FCRA is enforced by the Federal Trade Commission, whose guidance is the authoritative source for how these rules work. If your interest in background checks is connected to hiring, the FTC’s published guidance is worth reading directly, and a licensed attorney in your state can explain how federal rules interact with any state-level requirements.

The broader lesson is that the purpose of a check shapes the rules around it. A check conducted for personal curiosity, one conducted for a court proceeding, and one conducted for employment are treated differently by the law. This is another reason licensing rules vary by state and professional practice varies by context — and why “check your state’s requirements” is not a dodge but the honest answer for many questions in this field. Business owners weighing employment-related checks should read our guide to hiring a PI for a small business, which covers the business-specific concepts separately.

Frequently asked questions

Can a PI find criminal records?

As a concept, yes — where those records are public. Criminal case filings in courts that make records public can generally be consulted, and investigators know which jurisdictions and court systems to check. But sealed or expunged records are not available, juvenile records are generally restricted, and not every jurisdiction’s records are equally accessible. A thorough check names the jurisdictions searched, and a careful report distinguishes between records searched and records not searched. No investigator can promise a complete criminal history, because completeness depends on records that may sit in courthouses nobody thought to check.

Can a PI find out where someone works?

Employment history can sometimes be established through records and verification, but it has real limits. Professional license records may show current licensing; business filings may show business associations; direct verification can confirm past employment when former employers cooperate. What an investigator cannot do is obtain someone’s private employment files without proper authorization, and current employment is not always a matter of public record. Anyone promising to reveal exactly where someone works right now, as a certainty, is overpromising. The honest answer depends on what records exist and who will confirm what.

Can a background check find sealed or expunged records?

No — and that is the intended purpose of sealing and expungement. When a court seals or expunges a record, it is removing that record from the sources a background check consults. An investigator who claims the ability to retrieve sealed records is describing conduct that would be improper. There is a related subtlety worth knowing: older records that predate a sealing order may persist in secondary sources, but a professional check relies on authoritative sources, not on stale aggregations. If a sealed record matters to your question, that is a matter for a licensed attorney, not an investigator.

Does a PI background check include financial information?

Only at the level that is publicly recorded. Judgments, liens, and bankruptcy filings are generally matters of public record and may appear in a background check. Bank account balances, tax returns, credit reports obtained without authorization, and similar private financial details are not available to investigators through lawful means. The line is between what a government body has made public and what remains private. Investigators work on the public side of that line unless they have proper legal authorization, which in most private-client contexts they do not.

Is a PI background check the same as an online background-check site?

Not quite. Online background-check sites aggregate data from many sources and sell instant reports, which can be convenient but also stale, mismatched, or incomplete — public guidance has long noted accuracy problems with aggregated data. An investigator’s check is a manual process: choosing sources relevant to the question, consulting them directly, and interpreting the results with knowledge of how records systems actually work. The investigator’s product should name its sources and methods; the website’s product typically does not. For decisions that matter, the manual, transparent approach is the more defensible one.

Your concrete next step

If you are thinking about a background check — for hiring, for a personal decision, or out of general curiosity — start a notes document with three sections: the identifying details you already have (full names used, approximate dates, places lived), the specific question you want answered, and the jurisdictions you believe are relevant. Keep it factual and dated. This is preparation, not a case file: it organizes your thinking and gives any licensed professional you later consult a clear starting point, which makes their work faster and your questions sharper.

This site is educational information only — not legal advice, not a referral service, and not an investigator.