Wisconsin Private Investigators and Investigation Agencies

Wisconsin Private Investigators and Investigation Agencies

Following are private investigators and investigation agencies in the state of Wisconsin.  Before hiring a detective or agency, contact the appropriate state licensing authority to confirm current license information:

Wisconsin Department of Regulation & Licensing
P.O. Box 8935
Madison, WI 53708
(608) 266-0829

Hire a Private Investigator in Wisconsin

The following list is in alphabetical order and is by no means a ranking.  We encourage you to evaluate each detective’s services and select the most appropriate provider based on your individual needs. Take the time to review their website (if available) and call several different investigators to ask questions and get price quotes.

To learn more, read our article Tips for hiring a P.I.

Join the P.I. Directory


Advanced Surveillance Group

Owner – Patrick McManigal
17125 West Bluemound Road #113 Brookfield, Wisconsin 53005
Telephone – 414-258-2223
FAX – 4142582268
[email protected]
www.asgpi.com

Our company performs surveillance investigations, recorded statements and AOE/COE investigations for insurance companies, law firms and third party administrators.  Servicing the insurance defense industry for over 18 years we have the experience to assist you in your liability cases.

We take great pride in our client relationships and will work hard to earn and keep your business on a daily bases. Should you have a need we can fulfill, please allow us to the opportunity to show you the merits of our service.

Thank you and best regards.
Patrick McManigal
Advanced Surveillance Group Inc.
Office: 414.258.2223
Cell: 414.235.6481
“We’re Watching Out For You”


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Badger State Reporting Service

Owner – Wisconsin Investigative Services
Milwaukee, Wisconsin
Telephone – 800.408.1496
[email protected]
www.badgerstatereporting.com

Badger State Reporting Service provides professional investigation and documentation to Wisconsin’s insurance defense industry, third-party administrators, and individuals.  We employ a diverse group of highly experienced investigators who provide a wealth of video evidence and court-ready reports for your hardest cases. We bill at one of the lowest daily-rates in Wisconsin while producing more documentation than our competitors.  Take a look at our website and give us a call today.


C3 Detective Agency

Owner – Christopher Catania
PO Box 3312, Oshkosh, Wisconsin 54903
Telephone – 1-877-895-8338
FAX – 1-877-400-6787
[email protected]
www.c3detectiveagency.com

Private Detective Agency in Wisconsin


Central States Investigation Agency

Owner – Joshua Erickson Investigator
PO Box 337, La Crosse, WI 54602-0337
Telephone – 608-519-3401
FAX – 888-896-1287
[email protected]
http://www.csiagency.us

Central States Investigation Agency, LLC is a licensed private investigation agency specializing in Surveillance services (Domestic, Child Custody/Support, Insurance), Electronic “Bug” Sweeps, employment verification, background checks, process services and more.

License No: 16548-062

We are a members of:
PAWLI – Professional Association of Wisconsin Licensed Investigators
NAPPS – National Association of Professional Process Servers
NAIS – National Association of Investigative Specialist

We understand your situation is unique, with that in mind we will take the time to understand your situation and present you with options specifically tailored to your situation.

Call NOW for a FREE and confidential consultation. 1-608-519-3401


Drews-Alan Detective Agency

Owner – Catherine Hansen/ Owner
PO BOX 070208, Milwaukee, WI 53207
Telephone – 414-628-4784
FAX – 414-763-6375
[email protected]
www.drews-alan.com

Drews-Alan Detective Agency is a female owned and operated agency that specializes in Worker’s Compensation, Liability, and Disability Surveillance, Background Investigations and Research for the Insurance Industry, Employers, and their Attorneys.  Drews-Alan Detective Agency is licensed to practice in Wisconsin and Illinois and holds a comprehensive liability insurance policy with West Bend Mutual Insurance Company.

Wisconsin License #16519-062
Illinois License #0129-219933


Dubuque Investigations

Owner – Dominick Locascio
P.O. Box 485 Dubuque, IA 52004
Telephone – (563) 663-4131
[email protected]
http://www.dbqinvestigations.com

Dubuque Investigations specializes in discreet, professional, confidential investigative services for clients and law firms in Dubuque County and the entire State of Iowa. We stay in touch with you during your investigation and you will not have to wait for results. Headquartered in Dubuque, Dubuque Investigations is a full-service detective agency, available to conduct investigations for attorneys, businesses, insurance companies, and individuals. Dubuque Investigations is here to help with all your investigative needs. Meeting your needs is our top priority. We are available 24 hours a day, 365 days a year.


Mapleton Investigations, LLC

Owner – Kevin Keyser, Owner
24 South Main Street, Oconomowoc, WI 53066
Telephone – 262-567-5770
FAX – 920-474-7017
[email protected]

Mapleton Investigations, WI License: #16449-062, is a full service investigative agency serving attorneys, corporations, insurance firms and private citizens throughout the State of Wisconsin.

At Mapleton Investigations, our clients receive the individual attention necessary to investigate their specific needs. We provide you with expedient results and indisputable video and photographic evidence acknowledged by today’s court system.

Our professional services include: video surveillance, criminal/civil investigations, medical clinic inspections, Insurance fraud, and a variety of other professional, confidential services.


Net-Result Investigations Group

E5850 South Shore Drive Weyauwega, WI 54983
Telephone – 9208674766
[email protected]
http://www.pc-4n6.com

Internet based investigations. Anti-piracy, DMCA experienced. Infiltrate piracy/hacking rings and identify key players. Surveillance of forums, websites, IRC and UseNet groups. Computer Forensic, electronic evidence discovery and expert witness support. Excellent references.


Sterling Investigations

Owner – Charles Charpentier, Private Investigator
N5971 2nd Avenue, Oxford, Wisconsin 53952
Telephone – 608-697-0346
[email protected]
http://sterling-investigations.com

Serving attorneys, businesses and individuals since 1994. Missing Persons Specialist, Skip Tracing, Civil & Criminal Investigations, Process Service.


VanGuilder Investigations & Protection Services

Owner – Detective Eric T. VanGuilder
3607 Great Bear Trailway Danbury, Wisconsin 54830
Telephone (715) 259-7266
FAX (715) 259-7342
[email protected]
www.ericvanguilder.com

Full Services Licensed Detective Agency. Providing all types of professional investigations i.e. criminal, civil, personal injury, accident etc., surveillance, background investigations, evidence collection, trial preparation, witness interviewing, and process serving. Available 24/7. Serving the Northern and Northwestern Wisconsin Area.


Watch N U Investigative Agency

Owner – Brenda Nemitz / Owner
W8664 Lone Elm Road, Van Dyne WI 54979
Telephone (920)933-2431
FAX (920)688-2629
[email protected]

Our main areas of investigative work include; alleged workers compensation, fraud cases and personal injury cases for insurance companies. All other investigative services are available such as criminal, child abuse and child custody, divorcees, process server. I have over 7 years of investigative and 9 years of law enforcement experience. We cover Central Wisconsin and State wide, if requested. References are available upon request.

Join the P.I. Directory


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1 comment

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  1. robert wierzbinski
    robert wierzbinski 12 March, 2014, 03:03

    is anyone hiring i have license and experince

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