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Kosuke Onishi — Attorney in Washington, District of Columbia

Over 22 years of legal practice · 5.0/5 rating from 39 verified client reviews

MemberatOnishi Law Offices PLLC

Washington, DC

Practicing law in Washington since 2004.

22+
Years practicing
5.0 ★
39 client reviews
1
Bar admission

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Quick answer

Kosuke Onishi is a member based in Washington, DC. Kosuke has over 22 years of legal experience. Currently practicing at Onishi Law Offices PLLC. Rated 5.0 out of 5 from 39 client reviews.

Based in
Washington, DC
Experience
over 22 years
Known for
legal services
  • Over 22 years of practice as a licensed attorney.

About Kosuke Onishi: Kosuke Onishi is a member based in Washington, DC. Kosuke has over 22 years of legal experience. Currently practicing at Onishi Law Offices PLLC. Rated 5.0 out of 5 from 39 client reviews.

Biography

About Kosuke Onishi — Over 22 years of District of Columbia legal experience

Kosuke Onishi is a member based in Washington, DC. Kosuke has over 22 years of legal experience. Currently practicing at Onishi Law Offices PLLC. Rated 5.0 out of 5 from 39 client reviews.

Mr. Kosuke Onishi is a lawyer. Kosuke received a B.A. degree from University of Chicago in 1987, and has been licensed for 22 years. Kosuke practices at Onishi Law Offices PLLC in Washington, DC.

The kind of cases Kosuke takes

Kosuke reviews new inquiries case-by-case across a general legal practice in Washington and the surrounding District of Columbia area.

Credentials

Kosuke Onishi's legal education and bar admissions

  • Harvard University J.D.

  • University of Chicago

    B.A. · 1987

Jurisdictions

Kosuke's state bar admissions

  • District of Columbia

    2004 · ACTIVE

Kosuke studied at — in Harvard University J.D. and B.A. in University of Chicago.

Law school and academic background

Kosuke completed — in Harvard University J.D. and B.A. in University of Chicago. Formal legal training is one signal of substantive knowledge — the day-to-day practice Kosuke runs in District of Columbia is where that training gets applied to real client questions.

Locations

Kosuke Onishi's office in Washington

Kosuke's primary office is at 1629 K St., NW, Ste. 300, Washington, DC, 20006. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Onishi Law Offices PLLC

1629 K St., NW, Ste. 300

Washington, DC 20006

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Client feedback

Client reviews of Kosuke Onishi — 5.0/5 rating from 39 verified client reviews

Every review below is from a verified client of Kosuke. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing legal attorneys in Washington.

5.0

39 client reviews

Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Kosuke Onishi claims this profile.

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Hiring guide

How to hire Kosuke Onishi — what to expect in your first consultation

Working with a new legal attorney should feel structured. Here's how the first two conversations with Kosuke usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Kosuke charges for the initial consult. That fee is credited toward representation if you retain Kosuke'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; Kosuke will tell you what matters and what doesn't.

Questions to ask a legal attorney in Washington, District of Columbia

A short list to run through before you commit: How many legal 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 Kosuke

Kosuke discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in legal practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every legal 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. Kosuke confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Kosuke's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many legal practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Kosuke Onishi

  • How much does it cost to hire Kosuke for a legal case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Kosuke walks through the likely range during the consult so there are no surprises.

  • Does Kosuke offer a free consultation?

    Kosuke charges for the initial consult; that fee is credited toward representation if you retain Kosuke's office. Some legal attorneys offer free consults — check Kosuke's current terms during booking.

  • How long do legal cases in District of Columbia typically take?

    Simple legal 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. Kosuke gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Kosuke take my case if I'm outside Washington?

    Kosuke 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 — Kosuke 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 Kosuke?

    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. Kosuke will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Kosuke accepting new legal clients right now?

    Kosuke's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Attorneys serving Washington and Belize City in District of Columbia

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