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About me

Mario Treto, Jr. currently serves the City of Evanston as an attorney, where he primarily focuses his practice on land use and commercial transactions. As the lead attorney with the Zoning Board of Appeals, Plan Commission, Board of Local Improvements, Administrative Adjudication and Review, he provides legal counsel regarding various issues for each entity. Additionally, Mr. Treto collaborates with other City departments, such as Community Development, Public Works and Health. Mr. Treto also prosecutes traffic and ordinance violations in Cook County Circuit Court, drafts and reviews City ordinances, evaluates property tax exemptions/tax bills, performs real estate transactions, and works with other attorneys regarding code enforcement and business licensing.

Prior to his role with the City of Evanston, Mr. Treto worked at a Chicago law firm focusing his practice in the areas of Commercial & Residential Real Estate, Corporate Law, and Commercial Transactions. Mr. Treto provided his clients with legal counsel, including advising businesses on entity formation, statutory compliance, and arranging agreements between parties. Clients consisted of international companies, Chicago-based corporations, music venues and festivals, and charter schools. During law school, he worked as a Summer Associate at Lewis, Rice & Fingersh in St. Louis, Missouri and Faegre Baker Daniels in Indianapolis, Indiana, as well as a Law Clerk for Duke Energy.

Active in his law school community, Mr. Treto was President of the Latino Law Student Association, Executive Editor of the Federal Communications Law Journal, Board Member of the Sherman Minton Moot Court Competition, and Member of the Maurer School of Law Admissions Committee. In addition to his practice, Mr. Treto is an active alumnus of Washington University, having been appointed as the Executive Co-Chair for his class's fifth year reunion, and is a lifetime member of the Beta Theta Pi fraternity. He is fluent in Spanish.


Languages spoken: English, Spanish

Practice areas


  1. State, Local And Municipal Law: 40%
  2. Business: 20%
  3. Land Use & Zoning: 20%
  4. Litigation: 10%
  5. Government: 10%

Attorney endorsements

1 total 

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  • Evan Stanley Bruno

    Mario is an intelligent attorney and a consummate professional. He takes his work seriously and strives for the best outcome possible for the entity he represents.


    Evan Bruno Criminal Defense Attorney
    Relationship: Fellow lawyer in community

Contact info

City of Evanston

2100 Ridge Avenue
Evanston, IL, 60201


ILActive And Authorized To Practice Law201211/12/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Work experience
TitleCompany nameDuration
AttorneyCity of Evanston2013 - Present
AttorneyTristan & Cervantes2012 - 2013
Association namePosition nameDuration
American Bar AssociationN/AN/A
National Hispanic Bar AssociationN/AN/A
Hispanic Lawyers Association of IllinoisN/AN/A
Chicago Bar AssociationN/AN/A
Illinois State Bar AssociationN/AN/A
School nameMajorDegreeGraduated
Washington University in St. LouisBiology & PsychologyBA - Bachelor of ArtsN/A
Indiana University School of Law, BloomingtonLawJD - Juris DoctorN/A