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About me


Jim lives on the east side of Wauwatosa with his spouse, their two young children, and their dog, Hope.  When he is not practicing law, Jim enjoys honing his skills behind a set of drums, bicycling, and taking his kids to the playground.  Jim taught music in the public schools for eight years before he started practicing law.



Practice areas


  1. Family: 60%
    5 years
  2. Litigation: 30%
    11 years
  3. Estate Planning: 10%
    3 years



Hourly ($200/hour), Retainer (always), Free consultation (60 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

2 total 

Are you an attorney? Endorse this lawyer

  • Jeremy P. Levinson

    Jim is reliably thoughtful, creative, and committed to reaching clients' goals. I consistently find his judgment and focus to be of great value to our work and our clients' interests.


    Jeremy Levinson Ethics and professional responsibility Attorney
    Relationship: Co-worker

  • Richard J. Smith

    Atty. Guckenberg and I represented opposing parties in a divorce which ended a long marriage during which the husband and wife accumulated significant assets. Guckenberg was thorough, careful and zealous regarding all financial details, but the quality which most impressed me was the kindness and sensitivity that he showed his client at the final hearing. The proceedings were clearly difficult for her and Mr. Guckenberg was patient and kind. I endorse this lawyer.


    Richard Smith Criminal defense Attorney
    Relationship: Opposing Counsel on matter

Contact info

Halling & Cayo Sc

320 E Buffalo St Ste 700
Milwaukee, WI, 53202-5837


WIGood Standing200503/27/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Work experience
TitleCompany nameDuration
AttorneyHalling & Cayo SC2012 - Present
AssociateKohn Law Firm, S.C.2010 - 2012
OwnerGuckenberg Law Office, LLC2009 - 2010
Financial RepresentativeNorthwestern Mutual Financial Network2008 - 2009
AssociateFirst Law Group, S.C.2005 - 2007
TeacherAnoka Hennepin Independent School District 111994 - 2002
Association namePosition nameDuration
Milwaukee Bar AssociationMember2012 - Present
Society of Family LawyersMember2011 - Present
Leander J. Foley, Jr. Matrimonial Chapter of the American Inns of CourtMember2010 - Present
State Bar of WisconsinMember2005 - Present
Publication nameTitleDate
Wisconsin Law JournalSame sex marriage a reality . . . now what?2014
School nameMajorDegreeGraduated
Hamline University School of LawLawJD - Juris Doctor2005
Lawrence UniversityPerformance and EducationBachelor of Music1994
Speaking engagements
Conference nameTitleDate
Same Sex Marriage and Divorce in WisconsinFamily Law2013
Family and Matrimonial Law in the 21st Century: Practicing with HumanityFamily Law2013