Atty. Michael Sean McMahon

Atty. Michael Sean McMahon

Michael Sean McMahon is a lawyer practicing air pollution, environmental auditing, environmental compliance. Michael received a B.A. degree from John Carroll University in 1978, and has been licensed for 45 years.

Cleveland Cleveland 45 yrs experience 45 year
Call (216) 202-2855 Book Appointment

Profile Summary

About Michael Sean McMahon at a glance

Michael Sean McMahon is a Member based in Cleveland, Ohio, practicing at McMahon DeGulis LLP. They have 45+ years of legal experience, licensed to practice since 1981. Their practice focuses on environmental. Admitted to practice in Ohio (1981). Educated at Columbia University (J.D., 1981) and John Carroll University (B.A., 1978). Recognitions include AV Preeminent. Serands clients in Cleveland, OH and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Michael Sean McMahon is a lawyer practicing air pollution, environmental auditing, environmental compliance
  • Michael received a B.A. degree from John Carroll University in 1978, and has been licensed for 45 years
  • Michael practices at McMahon DeGulis LLP in Cleveland, OH

Practice Areas Explained

Michael Sean McMahon's Areas of Practice

Each practice area below reflects the types of cases Michael Sean McMahon handles, with a brief overview of what that area of law covers.

Environmental Law

Environmental attorneys for regulatory compliance, contamination, land use, and natural resource law.

Michael Sean McMahon is one of 56,434 environmental attorneys indexed nationally. Browse environmental attorneys in Ohio →

Jurisdictional Context

Why local counsel matters in Ohio

Practicing law in Ohio. Legal matters in Ohio are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Cleveland are typically filed in the local municipal court or the appropriate Ohio state district court, depending on subject matter and amount in controversy. An attorney licensed in Ohio 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 Ohio courts without local counsel or pro hac vice admission.

Looking for additional Ohio attorneys? Browse all attorneys in Cleveland or all attorneys in Ohio.

Frequently Asked

Common questions about Michael Sean McMahon

Where is Michael Sean McMahon's law office located?
Michael Sean McMahon's law practice is located in Cleveland, Ohio. The firm is McMahon DeGulis LLP. You can contact the office directly through this profile page.
What practice areas does Michael Sean McMahon handle?
Michael Sean McMahon focuses on environmental. Each practice area listed reflects experience handling cases of that type in Ohio.
How long has Michael Sean McMahon practiced law?
Michael Sean McMahon has 45+ years of legal experience and has been licensed since 1981.
Where did Michael Sean McMahon go to law school?
Michael Sean McMahon earned their education at (J.D., 1981); (B.A., 1978).
How can I contact Michael Sean McMahon for a consultation?
You can contact Michael Sean McMahon 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.
What awards or recognition has Michael Sean McMahon received?
Michael Sean McMahon's notable recognition includes: AV Preeminent.

Education

J.D.
Columbia University
- 1981
B.A.
John Carroll University
- 1978

Awards

AV Preeminent

Bar Admissions

Ohio
Admitted: 1981

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