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About me

I grew up in Illinois, but if you're a Wisconsinite, please don’t hold that against me.  I grew up on a farm, not in Chicago, and my family never helped to clog Wisconsin Interstates on summer weekends.  Being a farm kid, I learned the value of hard work early on and those lessons stayed with me as I practice law.  After college, I moved to Wisconsin for graduate school at the University of Wisconsin – Madison.  After getting my master’s degree, I ended up working for an organization that dealt with motorist issues, including so-called drunk driving laws.  This inspired me to go to law school so that he could help defend those accused of impaired driving.  My focus set me apart; it is rare to find anyone else who wanted to specialize in operating while under the influence (OWI) cases.  During school, I  also had the opportunity to clerk for the well-known defense firm of Van Wagner & Wood. 


After being admitted to the bar, I became an associate attorney at Van Wagner & Wood, where Iworked a variety of cases, but focused heavily on my passion of OWI defense.  In May 2010, I decided to start my own practice to provide client-centered criminal defense representation.  OWI defense continues to make up the majority of the work I do, although I also handles many other cases, everything from traffic tickets to sexual assaults.   


I am admitted to practice throughout Wisconsin and in federal court for the Western District of Wisconsin.  I am a member of the State Bar of Wisconsin, Dane County Bar Association, National Association of Criminal Defense Attorneys, Wisconsin Association of Criminal Defense Lawyers, and Dane County Association of Criminal Defense Attorneys.  I am one of just a dozen or so members of the National College of DUI Defense that practice in Wisconsin.  I am also perhaps the only defense attorney in the state to have actually undergone training on an actual Intoximeter EC/IR II, the breath test machine used by police departments throughout Wisconsin.    


When not at work my interests include a variety of outdoor activities, architecture, and baking.  In fact, my baked goods are pretty well known by court staff throughout southern Wisconsin. 



Languages spoken: Turkish

Practice areas


  1. DUI & DWI: 30%
    7 years
  2. Immigration: 30%
    6 years
  3. Criminal Defense: 20%
    7 years
  4. Family: 20%
    6 years



Fixed (always)

Payment types:

Cash, Check, Credit card

Attorney endorsements

18 total 

Are you an attorney? Endorse this lawyer

  • Julie Gaudreau

    I absolutely endorse this lawyer. I reached out to John to inquire about a legal issue affecting one of my clients. John's response was prompt, informative and thoughtful.


    Julie Gaudreau DUI and DWI Attorney
    Relationship: Fellow lawyer in community

  • Michael S. Waddington

    I endorse John. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military law Attorney
    Relationship: Fellow lawyer in community

Contact info

Holevoet Law Office, LLC

222 S. Hamilton Street, Suite 3
P.O. Box 367
Madison, WI, 53701


WIGood Standing200903/27/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Top 40 Under 40 Criminal Defense LawyersThe American Society of Legal Advocates2013
Dean's Academic Achievement AwardUniversity of Wisconsin Law School2009
Highest Achievement in JurisprudenceState Bar of Wisconsin & University of Wisconsin Law School2007
Work experience
TitleCompany nameDuration
Associate AttorneyVan Wagner & Wood, SC2009 - 2010
InternJefferson County Public Defender's Office2009 - 2009
Law ClerkVan Wagner & Wood, SC2007 - 2009
Association namePosition nameDuration
Wisconsin Civil Justice CouncilBoard Member2015 - Present
Competitive Wisconsin Inc.Board Member2015 - Present
The American Society of Legal AdvocatesN/A2013 - Present
James E. Doyle American Inn of CourtN/A2011 - Present
Jefferson County Bar AssociationN/A2011 - Present
Dane County Association of Criminal Defense AttorneysN/A2010 - Present
National College of DUI DefenseN/A2009 - Present
Dane County Bar AssociationN/A2009 - Present
Wisconsin Association of Criminal Defense LawyersN/A2009 - Present
National Association of Criminal Defense AttorneysN/A2009 - Present
State Bar of WisconsinN/A2009 - Present
Legal cases
Case nameOutcome
State v. David G.Conviction for Implied Consent Violation Reversed
State v. Keith G.All criminal charges dismissed
State v. Alex O.Case dismissed
See all legal cases 
School nameMajorDegreeGraduated
University of Wisconsin Law SchoolLawJD - Juris Doctor2009
University of Wisconsin, MadisonHistoryMA - Masters2004
University of St. FrancisHistoryBA - Bachelor of Arts2002
Speaking engagements
Conference nameTitleDate
University of Wisconsin Law SchoolThe Anatomy of an OWI Case2014
University of Wisconsin Law SchoolThe Anatomy of an OWI Case2013
NABRICO 2013Young Lawyers and Their Future2013
University of Wisconsin Law SchoolThe key to building a successful OWI practice2012
Madison Solo RoundtableMarketing strategies for the solo practitioner and small firm2012
University of Wisconsin Law SchoolThe challenges and rewards of starting your own law practice2011
Crash Data Recorder Users’ ConferenceLegal implications of collecting data from Crash Data Recorders2006