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Discover more about private investigators capability, employment and regulations in Winnetka.


ICS offers a full range of private investigation services throughout Illinois and our investigations are always performed by licensed Winnetka private investigators. All ICS investigators are committed to providing affordable, reliable and confidential services. ICS agents are held to the highest levels of professionalism and you can expect their findings reported in an accurate and timely fashion. Contact us today to begin your case. ICS is a full service private detective agency.


Local Winnetka Private Investigation Services

ICS provides a full range of investigations services for the City of Winnetka and all surrounding metropolitan areas. Simply submit a free online private investigation consultation form.

A private investigator in Winnetka must apply to the Illinois Department of Public Safety and pass licensing requirements, including a thorough background check. While many private investigators come from a law enforcement or military background, it is not a requirement for employment as a private investigator in Illinois.

You can rest assured that any Winnetka Private Investigator assigned to your case with ICS are fully licensed and insured in accordance with Winnetka laws and participates in any required continuing education.

Winnetka Private Investigator

With its population of nearly 13 million people, the State of Illinois is on par with the national medians in terms of crime rates.  In 2011, 401,272 index crimes were reported, which include both violent and property crimes.  Of the 31.18 crimes per 1,000 residents that averages, 4.29 were violent and 26.89 were property crimes, compared to 3.9 and 29.1 nationally.  The city of Winnetka is one of the smaller suburbs in Illinois with a population of only 12,000.  It is rated as safer than 69% of United States cities, with only 0.41 violent and 12.74 property crimes reported annually per 1,000 residents.  A private investigator, such as those licensed by ICS, still may be necessary to guarantee that your case is investigated properly and thoroughly by a highly skilled, dedicated professional who is not limited by government resources.

How to become a Private Investigator in Winnetka

  1. Be at least 21 years of age
  2. Have no felony convictions within the last 10 years
  3. Is of good moral character and of mental competence, does not suffer from substance addiction
  4. Has a minimum of three (3) years experience within the past five (5) years working full-time for a licensed private detective agency, a licensed attorney, or in a law enforcement agency
  5. Pass a written examination

Winnetka Private Investigator Restrictions

In order to conduct private investigations in Winnetka, all private investigators must comply with local and federal laws.

  • Impersonate Law Enforcement - Private Investigators in Winnetka cannot carry a badge, wear a uniform or say anything that might imply that the private investigator is a police officer or federal agent.
  • Make an Arrest - Private Investigators in Winnetka cannot legally make an arrest. If there is evidence that suggests an arrest should be made the investigator should contact law enforcement.
  • Wiretapping - Wiretapping is illegal without a proper warrant. Private Investigators cannot tap a phone.
  • Trespassing - Private Investigators cannot break and enter onto private property.

Winnetka Cheating Spouse Investigation

Are you in Winnetka and are having suspicions that you spouse may be cheating on you? There could be many reasons that gave you your suspicions about your spouse but you shouldn't jump to conclusions without knowing the facts. Gain piece of mind and learn the truth with a Winnetka Cheating Spouse Investigation. ICS has been conducting cheating spouse investigations since 1967 and we have the experience and knowledge to create a plan to obtain the truth about your spouse so you may stop wondering whats true and whats not. Call today and speak with an ICS private investigator to learn more about how we can help you with your specific cheating spouse investigation.

Winnetka Background Investigation

Do you need a background investigation conducted in Winnetka? Are you in Winnetka but need a background investigation conducted on an individual elsewhere? ICS has experienced private investigators in Winnetka and elsewhere that are standing by ready to help you with your investigation. Background Investigations are a valuable resource private investigators can provide but are not the only thing they can provide. Sometimes a background investigation is only a small portion of a much more in depth investigation. Call ICS today and learn more about Winnetka background investigations and how we can help you with your case.

Winnetka Birth Parent Locate

Are you in Winnetka and are attempting to locate your birth parent? Are you in Winnetka but believe your birth parent is located elsewhere? When you've made the decision to locate your birth parent it can be a very emotionally difficult time for you. The stresses associated with finding a birth parent can be overwhelming which is why we want to take that burden away from you. ICS has been providing birth parent locate investigations in Winnetka and elsewhere since 1967 and has experienced investigators standing by to start your case. Call today and learn more about birth parent locates and find out how we can help you locate your birth parent.


Private Investigation Cases Map for in Find Local Private Investigator


Case Studies

  • Overseas Lost Person

    Private Investigator finds a lost person in an overseas country 01/24/2019

  • Locate Lost Person

    ICS was contacted in an attempt to locate a Subject that had been in a 3-year relationship with the Client. 01/17/2019

  • Child Custody Exchange

    ICS was contacted in an attempt to have an Investigator on site to witness the exchange of a child from father to mother. Due to the legality of the exchange, a verified witness was required by the Client to document a proper exchange to negate... 01/08/2019

  • Case Study: Infidelity investigation in a Resort City Like Dubai

    ICS was contacted by a Client in an attempt to verify if her spouse was engaging in acts of Infidelity while on a stay in a city much like Dubai. Investigators were dispatched. We had boot on the ground in the resort and reserved their stay. In... 10/01/2018

  • Case Study: Due Diligence investigation helps business move forward with new investors.

    The private investigator for ICS helped our client make informed decisions about their potential investigators. With this case study the efforts made by ICS thwarted the clients suspicion and made for better business dealing. 09/20/2018


Paper and Press Releases

  • Join our team of Qualified Parties

    There is simply no agency with an international footprint that takes better care of its private investigator talent. "Our solution is simple, take care of you like our own!" -Michael Rabern 08/29/2018

  • Teen Cyber Bullying

    Cyberbullying has become increasingly common, with the increased use of communication technology, especially among teenagers.
    12/07/2015

  • Cellphone Spyware

    Cellular Spyware is basically "phone surveillance". It is an app that has usually been installed by a third party on a cell phone that allows them to listen to or record conversations, track location and monitor all the data of the cell phone that... 12/07/2015

  • Workers Compensation Fraud

    Worker's compensation programs are compensation plans for the victims of all job-related injuries.  When an employee gets hurt on the job, the employer is liable for medical expenses, lost income and other expenses until the employee has healed... 12/07/2015

  • ICS Will Not Do Cheating Decoy Investigations

    International Counterintelligence Services (“ICS”), a leader in the private investigations industry takes a strong stand against Cheating Decoy Investigations. 12/07/2015



Local Associations and Important Resources for Winnetka


Recent Investigation Inquiries

Origin Investigation Location Case Type
Winnetka, California Texas Catfish or Catfishing Investigation
Winnetka Illinois United States Chicago, Illinois United States Cheating Husband Investigation
Winnetka California United States Anaheim, California United States Process Service (Worldwide)


Winnetka Private Investigator Listing

Hanrahan Investigations

9914 Derby Lane, Suite 201
Weschester, Illinois 60154
Phone : 708.343.1955; 708.343.1888; 800.667.5500
Email : jwhan@hanrahaninvestigations.com
Office Contact: John Hanrahan

Investigative Solutions

2314 Route 59, Suite 320
Plainfield (Chicago), Illinois 60544
Phone : 815-405-4682
Email : jwkis@comcast.net
Office Contact: Jim Kasper

Marcella Teplitz

401 Main Street, Suite1530
Peoria, Illinois 61602
Phone : 309-685-2900; cell 309-657-1421
Email : mteplitz@teplitzco.com
Office Contact: Marcella Teplitz

RGH Investigations

505 E Illinois St, Chicago, IL 60611
Chicago, Illinois 60611
Phone : 312.768.0376
Email : bob@rghinvestigations.com
Office Contact: Bob Hanrahan

Spyder-I Investigations

3535 Bell Rd. Unit 503 Nashville, TN. 37214
Chicago, Illinois 37214
Phone : 615.485.0007
Email : wendy@everythingrealestatellc.com
Office Contact: Wendy Lockhart

Verify Investigations

112 S. Sangamon St
Chicago, Illinois  60607
Phone : 773-368-3976
Email : blopez@verifypi.com
Office Contact: Ben Lopez

Walden Investigative Group

7719 N. Pioneer Lane
Peoria, Illinois 61615
Phone : 309-696-5541
Email : info@waldeninvestigations.com
Office Contact: Scott Walden


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