What Can a Private Investigator Legally Do in Colorado? The Lines Set by State Law

01Starting point

What Can a Private Investigator Legally Do in Colorado Without Police Powers?

People often assume an investigator carries some kind of official authority. In Colorado that has never been true, and today there is not even a state license. Mandatory licensing took effect in 2015, the 2020 bill that would have continued it was vetoed on July 11, 2020, and the state's investigator rules were repealed in 2022. So what can a private investigator legally do in Colorado? The practical answer is the same as for any private citizen, plus experience and judgment. Our guide to vetting a Colorado PI covers that history in more depth.

No badge means no arrests, no traffic stops, no searches and no access to police databases. An investigator cannot compel anyone to answer questions or open a door. What a skilled investigator brings is method: knowing where records live, how to observe without being noticed, how to approach a reluctant witness and how to write a report a judge can rely on. That method is what Delator's Colorado investigations team is built around.

Delator Group is a licensed Tennessee private investigation firm headquartered in Nashville, with no Colorado office. We assign investigators to Colorado matters and hold them to Tennessee's licensing standard, including screening and supervision. We also confirm whether any local business license applies before field work, because the absence of a state license does not mean nothing at all is required.

• No state PI license since 2020
• No arrest, search or police database powers
• Ordinary criminal law applies in full

02Observation

Watching From Public Places Is Lawful; Stalking Is a Felony

An investigator may observe and photograph what anyone could see from a street, a parking lot or another public vantage point. That is the core of lawful surveillance, whether the question is a disability claim in Pueblo or a suspected affair in Parker. What changes the picture is conduct aimed at frightening someone. Our surveillance investigations in Colorado are planned around that line before the first shift.

Colorado's stalking statute, C.R.S. § 18-3-602, reaches a person who repeatedly follows, approaches, contacts or places someone under surveillance either with a credible threat or in a way that would cause a reasonable person serious emotional distress and actually does. A first offense is generally a class 5 felony. The harassment statute, § 18-9-111, separately covers following someone in or about a public place with intent to harass, annoy or alarm. People worried that they are the target can read about stalking investigations.

Professional surveillance avoids those elements by design. Investigators keep distance, never confront or contact the subject, end a shift when they are noticed and keep a time-stamped log that shows what they did and why. If a client asks for surveillance meant to intimidate a former partner, we decline. Lawful documentation for a married infidelity investigation needs none of that.

03Audio and calls

Recording Rules Under Colorado's Eavesdropping Statutes

Colorado is generally a one-party consent state. Under C.R.S. § 18-9-304, eavesdropping means a person who is not visibly present knowingly overhears or records a conversation without the consent of at least one principal party. Section 18-9-303 covers wiretapping telephone and electronic communications without the consent of a sender or receiver. Both are class 2 misdemeanors. An investigator who is part of a conversation may generally record it; one who plants a device to capture other people's talk may not.

That rule shapes everyday work. A witness interview can usually be recorded by the investigator conducting it, though we normally ask permission because a consensual recording is stronger evidence. A hidden recorder left in a spouse's car is a different matter entirely. Section 18-9-305 lists narrow exceptions, including security cameras on one's own premises with reasonable notice to the public. Employers should read our workplace surveillance in Colorado page before installing anything.

Calls that cross state lines add complexity, because some states require every party's consent, and your attorney should confirm how the rules apply to your facts. The full breakdown, including video and smartphone questions, is in our Colorado guide to recording conversations.

04Land, homes and vehicles

Trespass, Private Property and GPS Trackers

Colorado's criminal trespass statutes apply to investigators exactly as they apply to anyone else. Third-degree trespass under C.R.S. § 18-4-504, unlawfully entering or remaining on another person's premises, is a petty offense, but it becomes a felony on agricultural land when a person intends to commit a felony there. With ranches, irrigated farms and fenced grazing land across the Eastern Plains and the San Luis Valley, that matters. We document from public roads and lawful vantage points, and our insurance claim surveillance is planned with that in mind.

Hotels, apartment complexes and gated communities are private property even when the public moves through them. An investigator may enter areas open to the public for their intended purpose, but not secured floors, private garages or a guest's room. Our hotel surveillance investigations follow those limits, and a property manager's instruction to leave ends the observation at that spot.

Trackers are the question we hear most. We found no Colorado statute aimed specifically at GPS devices, but covertly tracking a person can amount to placing them under surveillance under the stalking law, and evidence from a device on a car you have no right to may be challenged. Delator refuses to fit trackers to vehicles a client has no right to. Where a vehicle is stolen or missing, lawful steps are described on our stolen car investigations page.

• No entry onto private land without permission
• Felony exposure on agricultural land
• No covert trackers on others' vehicles

05Information

Public Records, Databases and Privacy Law

Records are where most investigations start. The Colorado Open Records Act lets any person inspect public records, with no residency requirement, and agencies are presumed to respond within three working days, extendable by up to seven more for large requests. The Colorado Bureau of Investigation runs a name-based criminal history check covering Colorado records only. Court filings, recorded deeds and Secretary of State business filings round out the picture. A due diligence review before an acquisition relies heavily on these sources.

Investigators also use commercial databases, and federal law governs many of them. Background reports used for hiring or housing can fall under the Fair Credit Reporting Act, and driver and financial information carry their own federal restrictions. The Colorado Privacy Act adds duties for businesses that process data on 100,000 or more Colorado consumers a year, enforced by the Attorney General and district attorneys. We use permissible-purpose sources and will explain which apply to your executive hire background check.

What an investigator cannot do is obtain private records by deception. Calling a bank or phone carrier while pretending to be the account holder, guessing passwords or logging into someone's email are off limits, whatever the motive. Clients concerned about how much of their own data is public can ask about our personal information removal service.

06Off limits

Things a Colorado Investigator Should Refuse to Do

Some requests come up often enough that we answer them before they are asked. An investigator should not hack or unlock a phone, read someone's texts, install spyware, open mail, pose as a police officer, or bribe an employee for records. Harassing electronic messages are covered by § 18-9-111(1)(e), so repeated anonymous texts meant to rattle a subject are out as well. If the conduct you are worried about is online, our cyberbullying investigations page explains the lawful route.

Debt and judgment work has its own boundaries. An investigator can locate a debtor and identify assets through records, but cannot threaten, repossess property, change locks or remove a tenant. In Colorado only a sheriff executes a writ of restitution after an eviction judgment. Our debtor skip tracing stops at the address and the asset report, and collection or removal stays with counsel and the court.

When a client presses for any of these shortcuts, the honest answer protects both of us. Evidence obtained unlawfully can be excluded, the person who directed the conduct can face criminal or civil exposure, and the case usually ends up weaker. We would rather explain a slower, lawful plan than hand you material your lawyer cannot use.

• No phone, email or account access
• No impersonating police or account holders
• No lockouts, repossessions or removals
• No intimidation or harassing contact

07Courtroom and claims work

Serving Papers, Testifying and Fraud Work Under Colorado Law

Investigators can do several things that support the court process directly. Under C.R.C.P. 4(d), any person 18 or older who is not a party may serve a summons in Colorado, and C.R.C.P. 45 lets any non-party adult serve a subpoena, with one day's mileage tendered. Delator Field Services handles that work with logged attempts and a signed affidavit of service. The rules are explained in our guide to serving papers in Colorado.

Investigators also testify. A report built on a time-stamped log, photographs tied to each entry and plain factual language is what lets counsel lay foundation in district court, county court or the U.S. District Court for the District of Colorado, which sits in Denver, Colorado Springs, Grand Junction and Durango. When work is directed by an attorney, it can also support privilege arguments. Lawyers can see how that works through our Colorado criminal defense investigations.

Insurance fraud is one area where Colorado law expects investigators to be involved. Under C.R.S. § 10-1-128, insurers must keep an anti-fraud plan that includes hiring or contracting for fraud investigators, and § 8-43-402 makes a material false statement to obtain workers' compensation benefits a class 6 felony with forfeiture of benefits. Adjusters can review our Colorado insurance investigations. Work on Southern Ute or Ute Mountain Ute land may be governed by tribal law, so we confirm the approach with counsel first.

Services

Delator Group Services Built Inside These Limits

• Surveillance investigationsPublic-vantage observation with time-stamped logs and photographs, planned to stay well clear of Colorado's stalking and harassment statutes from the first shift.Learn more
• Infidelity investigationsDiscreet documentation of a suspected affair without trackers, recordings of other people's conversations or entry onto private property at any point.Learn more
• Skip tracingLawful database and public-record locates from $102, with field work from $1,000 when a Colorado address cannot be confirmed remotely.Learn more
• Background checksPermissible-purpose research on candidates, tenants and partners, explained so you know which federal and Colorado rules apply to your report.Learn more
• Attorney litigation supportWitness locates, interviews, scene documentation and court-ready reports directed by counsel, with a $1,000 minimum for civil litigation support.Learn more
• Insurance investigationsClaim verification and fraud documentation that supports a Colorado insurer's anti-fraud plan, gathered lawfully so it holds up on review.Learn more
• Stalking investigationsHelp for people who believe they are being followed or tracked, including documentation your attorney or a court can use for protection.Learn more
• Corporate investigationsInternal misconduct, theft and leak inquiries for Colorado employers, conducted within recording, privacy and workplace notice requirements throughout.Learn more
• Process servingService of summonses and subpoenas by adult non-party servers under C.R.C.P. 4 and 45, documented with attempts and a signed affidavit.Learn more

How it works

How Delator Keeps a Colorado Assignment Lawful

1. 01

   Screen the request

   We ask what you need to prove and how you plan to use it, and we decline methods that would cross Colorado's stalking, eavesdropping or trespass lines.

2. 02

   Write the method down

   The written scope names the vantage points, records sources and interview approach, so you and your attorney can review the plan before work starts.

3. 03

   Document as we go

   Investigators keep time-stamped logs and photographs tied to each entry, which shows a court exactly what was done, where and when it happened.

4. 04

   Report in plain facts

   The final report separates observation from opinion and notes any limits we hit, so counsel can judge how the evidence will be received.

Compare

Common Investigator Activities Under Colorado Law

Statewide coverage

The Same Legal Limits Apply Across All 64 Colorado Counties

State criminal law does not change at a county line, so the rules on this page hold from the Front Range to the Four Corners. Metro clients often begin with our Aurora investigations page or Lakewood private investigators. Boulder County matters run through investigators in Boulder, and southern Colorado clients can start with Pueblo casework. Wherever the work happens, the method is written into the scope, reviewed with you and, where counsel is involved, approved by your lawyer before any investigator goes into the field.

• Denver
• Aurora
• Lakewood
• Boulder
• Pueblo
• Castle Rock
• All of Colorado

FAQ

Frequently asked questions

Every service

Investigations available in Colorado

Every service below is available in Colorado and across Colorado, run by the same Delator Group leadership that manages our Tennessee casework. Choose a service to read how it works in Colorado.

Service areas

Private investigators across Colorado