Licensed Private Investigator in Chicago
Supreme Investigations provides discreet surveillance, process serving, background checks, skip tracing, and legal investigations, all handled directly by a licensed Illinois private detective and documented to court-ready standards.
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Experience
Hours Logged
Every Week
How We Help
We provide licensed investigative support for individuals, attorneys, and businesses across Chicagoland.
Why Clients Choose Supreme Investigations
How the Process Works
Every case stays clear, professional, and documented from first contact through final report.
Call, text, or submit a confidential intake. You'll speak directly with Robin Valenzuela — not an assistant or a call center. Most cases receive a same-day response.
Scope, objectives, legal constraints, and pricing are confirmed in writing before any work begins, so there are no surprises on the invoice.
Covert surveillance, database research, process serving, or field canvassing is carried out with discipline and documented in real time.
You receive a complete evidence package of timestamped video, photographs, and a written chronological report, formatted for your attorney and ready for court.
Robin Valenzuela
Principal · Licensed Private Detective
When you contact Supreme Investigations, you reach Robin Valenzuela directly — the licensed private detective who will personally handle your case. There are no intake coordinators or case managers between you and the investigator working your matter.
With over 15 years of investigative experience and 27,000+ documented field hours across Chicago and Chicagoland, Robin brings a calm, methodical approach to even the most sensitive matters — structured around the outcome you need, and delivered with the professionalism your situation requires.
What Clients Say
"I highly recommend Robin for serving process. I had a high-profile defendant with security who tried to scare him off, but Robin did not budge. He staked out the premises until the defendant had to capitulate. Very professional and committed to getting the job done."
"Supreme Investigations was able to gather numerous days of footage of my partner driving while intoxicated to and from my child's practice. They even attempted police intervention on my behalf to make sure my child got home safe."
"Robin was AMAZING! Outstanding responsiveness, pricing, and professionalism from start to finish. Most of our cases were very last minute and he delivered every time."
Transparent Pricing
All rates are confirmed in writing before work begins, with no hidden fees, mileage surcharges, or surprises.
Frequently Asked Questions
Here are answers to common questions about working with a licensed Chicago private investigator.
How much does a private investigator cost in Chicago?
Manned surveillance is $200 per hour, billed door to door, with a six-hour minimum — $1,200 all-inclusive. That rate covers the investigator's time, equipment, documentation, and the written activity report. Travel to and from is included within the six hours — there are no mileage charges, toll fees, fuel surcharges, or report-writing fees added after the fact. Process serving is $225 for standard subjects and $650 for hard-to-serve subjects, covering up to six hours of active attempt time including travel. Locates and background checks start at $650. The final price depends on the scope of the case and the depth of the search, and it is always quoted in writing before work begins. Unmanned surveillance is a $2,000 flat rate for a 5-day camera deployment, including placement, retrieval and footage review. All pricing is confirmed in writing before any work begins.
Is Supreme Investigations licensed in Illinois?
Yes. Supreme Investigations PLLC is a licensed Illinois private detective agency under 225 ILCS 447 — Agency License #117.001922 and Detective License #115.002750, issued by the Illinois Department of Financial and Professional Regulation (IDFPR). Both licenses are publicly verifiable at idfpr.illinois.gov.
What areas do you serve?
We serve Chicago, Cook County, DuPage County, and all of Chicagoland — including Naperville, Schaumburg, Oak Park, Evanston, Orland Park, Tinley Park, Bolingbrook, Wheaton, and Aurora. Out-of-area assignments are available by scope. Bilingual service is available in English and Spanish — se habla español.
Do you work with attorneys and law firms?
Yes. We regularly work alongside family law attorneys, civil litigators, insurance defense counsel, and personal injury firms across Cook County and Chicagoland. Our reports are formatted for direct use in motions, hearings, depositions, and settlement negotiations. Attorneys are welcome to contact us directly to discuss scope, privilege considerations, documentation requirements, and scheduling.
How quickly can surveillance begin?
Most surveillance assignments can be deployed within 24 to 48 hours of intake. Time-sensitive cases — court deadlines, custody proceedings, insurance defense — are prioritized. Contact us directly by phone or text for the fastest response. We are available seven days a week.
Need Answers? Start with a Confidential Consultation.
Most sensitive matters don't wait for business hours. Call, text, or submit a confidential intake — and you'll hear directly from the licensed investigator who will handle your case. We are available 7 days a week.