Atty. Mark Joseph Washko

Atty. Mark Joseph Washko

Mark Joseph Washko is a lawyer practicing environmental law, energy, legislative practice. Mark Joseph received a A.B. degree from College of William & Mary in 1990, and has been licensed for 29 years.

Washington Washington 29 yrs experience 29 year
Call (771) 328-7561 Book Appointment

Profile Summary

About Mark Joseph Washko at a glance

Mark Joseph Washko is a environmental, government, and energy attorney based in Washington, District of Columbia. They have 29+ years of legal experience, licensed to practice since 1997. Admitted to practice in Virginia (1997). Educated at Vermont Law School (J.D., 1997) and College of William & Mary (A.B. M.P.P., 1990). Serands clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mark Joseph Washko is a lawyer practicing environmental law, energy, legislative practice
  • Mark Joseph received a A.B. degree from College of William & Mary in 1990, and has been licensed for 29 years
  • Mark Joseph practices in Washington, DC

Practice Areas Explained

Mark Joseph Washko's Areas of Practice

Each practice area below reflects the types of cases Mark Joseph Washko 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.

Mark Joseph Washko is one of 56,434 environmental attorneys indexed nationally. Browse environmental attorneys in District of Columbia →

Government & Administrative Law

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

Mark Joseph Washko is one of 132,225 government attorneys indexed nationally. Browse government attorneys in District of Columbia →

Energy & Utilities Law

Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.

Mark Joseph Washko is one of 36,230 energy attorneys indexed nationally. Browse energy attorneys in District of Columbia →

Jurisdictional Context

Why local counsel matters in District of Columbia

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

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common questions about Mark Joseph Washko

Where is Mark Joseph Washko's law office located?
Mark Joseph Washko's law practice is located in Washington, District of Columbia. You can contact the office directly through this profile page.
What practice areas does Mark Joseph Washko handle?
Mark Joseph Washko focuses on environmental, government, energy. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has Mark Joseph Washko practiced law?
Mark Joseph Washko has 29+ years of legal experience and has been licensed since 1997.
Where did Mark Joseph Washko go to law school?
Mark Joseph Washko earned their education at (J.D., 1997); (A.B. M.P.P., 1990).
How can I contact Mark Joseph Washko for a consultation?
You can contact Mark Joseph Washko 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

J.D.
Vermont Law School
- 1997
A.B. M.P.P.
College of William & Mary
- 1990

Bar Admissions

Virginia
Admitted: 1997

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