John Duval Walke, Environmental Attorney in Washington, District of Columbia
Over 33 years of legal practice
Sr. Coun., Nat. Res. Def. Council
Washington, DC
Practicing environmental in Washington since 1993.
- 33+
- Years practicing
- 3
- Bar admissions
Practices in
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Quick answer
John Duval Walke is a sr. coun., nat. res. def. council based in Washington, DC. The practice focuses on Environmental. John has over 33 years of legal experience.
- Based in
- Washington, DC
- Experience
- over 33 years
- Known for
- Environmental
- Handles Environmental matters from Washington, DC.
- Over 33 years of practice as a licensed attorney.
About John Duval Walke: John Duval Walke is a sr. coun., nat. res. def. council based in Washington, DC. The practice focuses on Environmental. John has over 33 years of legal experience.
Areas of practice
John's practice areas in Washington
John concentrates on environmental. Each area below outlines the kind of case John handles, typical outcomes to expect, and how the intake process starts.
Environmental cases in Washington, District of Columbia
John takes environmental matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Biography
John Duval Walke, environmental attorney serving Washington
John Duval Walke is a sr. coun., nat. res. def. council based in Washington, DC. The practice focuses on Environmental. John has over 33 years of legal experience. John works from Washington, District of Columbia and takes on environmental matters across the region.
Mr. John Duval Walke is a lawyer practicing environmental law. John received a A.B. degree from Duke University in 1990, and has been licensed for 33 years. John practices in Washington, DC.
Working with John on a environmental matter
Mr. John Duval Walke is a lawyer practicing environmental law. John received a A.B. degree from Duke University in 1990, and has been licensed for 33 years. John practices in Washington, DC.
Clients John works with
John reviews new inquiries case-by-case for environmental matters in Washington and the surrounding District of Columbia area.
Credentials
Credentials — where John studied and practices
Harvard Law School
J.D. · 1993
Duke University
A.B. · 1990
Jurisdictions
John's state bar admissions
Indiana
2011 · ACTIVE
District of Columbia
1996 · ACTIVE
Virginia
1993 · ACTIVE
John studied at J.D. in Harvard Law School and A.B. in Duke University.
Law school and academic background
John completed J.D. in Harvard Law School and A.B. in Duke University. Formal legal training is one signal of substantive knowledge — the day-to-day practice John runs in District of Columbia is where that training gets applied to real client questions.
Locations
John Duval Walke's office in Washington
John's primary office is at 1152 15th St NW Ste 300, Washington, DC, 20005-1733. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of John Duval Walke
John has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
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Schedule your consultationHiring guide
How to hire John Duval Walke — what to expect in your first consultation
Working with a new environmental attorney should feel structured. Here's how the first two conversations with John usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
John charges for the initial consult. That fee is credited toward representation if you retain John's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; John will tell you what matters and what doesn't.
Questions to ask a environmental attorney in Washington, District of Columbia
A short list to run through before you commit: How many environmental matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for John
John discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in environmental practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every environmental matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. John confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
John's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many environmental practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about John Duval Walke
How much does it cost to hire John for a environmental case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. John walks through the likely range during the consult so there are no surprises.
Does John offer a free consultation?
John charges for the initial consult; that fee is credited toward representation if you retain John's office. Some environmental attorneys offer free consults — check John's current terms during booking.
How long do environmental cases in District of Columbia typically take?
Simple environmental matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. John gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can John take my case if I'm outside Washington?
John is licensed in District of Columbia. Matters governed by District of Columbia law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — John will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with John?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. John will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is John accepting new environmental clients right now?
John's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Environmental attorneys serving Washington and Belize City in District of Columbia
John handles environmental matters throughout District of Columbia. Each city below is a direct link into the search page for verified environmental attorneys in that community.
More counsel
Other top-rated environmental attorneys in District of Columbia
If John's intake is full or the fit isn't right, these environmental attorneys in Washington handle similar matters. Every profile below is verified and open to consultations.

Russell Randle
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Steven G. Barringer
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Joseph Dominic Lonardo
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George Clemon Freeman, Jr.
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Kevin P. Holewinski
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