Atty. William Otto Chatt

Atty. William Otto Chatt

William Otto Chatt is a lawyer practicing commercial, real estate, administrative law/regulatory law and 4 other areas of law. William has been licensed for 19 years.

Chicago Chicago 19 yrs experience 19 year
Call (224) 312-2843 Book Appointment

Profile Summary

About William Otto Chatt at a glance

William Otto Chatt is an Associate based in Chicago, Illinois, practicing at Erwin & Associates, LLC. They have 19+ years of legal experience, licensed to practice since 2007. Their practice focuses on business, real estate, creditor rights, litigation, and government. Admitted to practice in Illinois (2007) and Wisconsin (2019). Educated at DePaul University J.D. (—). Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Otto Chatt is a lawyer practicing commercial, real estate, administrative law/regulatory law and 4 other areas of law
  • William has been licensed for 19 years
  • William practices at Erwin & Associates, LLC in Chicago, IL

Practice Areas Explained

William Otto Chatt's Areas of Practice

Each practice area below reflects the types of cases William Otto Chatt handles, with a brief overview of what that area of law covers.

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

William Otto Chatt is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Illinois →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

William Otto Chatt is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Illinois →

Creditor Rights & Collections

William Otto Chatt is one of 42,948 creditor rights attorneys indexed nationally. Browse creditor rights attorneys in Illinois →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

William Otto Chatt is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Illinois →

Government & Administrative Law

Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.

William Otto Chatt is one of 132,225 government attorneys indexed nationally. Browse government attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about William Otto Chatt

Where is William Otto Chatt's law office located?
William Otto Chatt's law practice is located in Chicago, Illinois. The firm is Erwin & Associates, LLC. You can contact the office directly through this profile page.
What practice areas does William Otto Chatt handle?
William Otto Chatt focuses on business, real estate, creditor rights, litigation, government. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has William Otto Chatt practiced law?
William Otto Chatt has 19+ years of legal experience and has been licensed since 2007.
Where did William Otto Chatt go to law school?
William Otto Chatt earned their education at (—).
How can I contact William Otto Chatt for a consultation?
You can contact William Otto Chatt directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

DePaul University J.D.
- In Progress

Bar Admissions

Illinois
Admitted: 2007
Wisconsin
Admitted: 2019

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