Atty. Dennis D. Costello

Atty. Dennis D. Costello

Dennis D. Costello is a lawyer.

Williams Bay Williams Bay 59 yrs experience 59 year
Call (262) 725-8955 Book Appointment

Profile Summary

About Dennis D. Costello at a glance

Dennis D. Costello is a Door Co. Corp. Coun. based in Williams Bay, Wisconsin. They have 59+ years of legal experience, licensed to practice since 1967. Admitted to practice in Wisconsin (1967). Educated at Marquette University Law School Class of 1967 (—). Serands clients in Williams Bay, WI and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Dennis D. Costello is a lawyer
  • Dennis received a degree from Marquette University Law School in 1967, and has been licensed for 59 years
  • Dennis practices in Williams Bay, WI

Jurisdictional Context

Why local counsel matters in Wisconsin

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

Looking for additional Wisconsin attorneys? Browse all attorneys in Williams Bay or all attorneys in Wisconsin.

Frequently Asked

Common questions about Dennis D. Costello

Where is Dennis D. Costello's law office located?
Dennis D. Costello's law practice is located in Williams Bay, Wisconsin. You can contact the office directly through this profile page.
How long has Dennis D. Costello practiced law?
Dennis D. Costello has 59+ years of legal experience and has been licensed since 1967.
Where did Dennis D. Costello go to law school?
Dennis D. Costello earned their education at (—).
How can I contact Dennis D. Costello for a consultation?
You can contact Dennis D. Costello 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

Marquette University Law School Class of 1967
- In Progress

Bar Admissions

Wisconsin
Admitted: 1967

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