Sean James O'Hagan, Criminal Defense Attorney in St Louis, Missouri
Over 52 years of legal practice · 4.4/5 rating from 1 verified client review
Prosecutor
St Louis, MO
Practicing criminal defense in St Louis since 1974.
- 52+
- Years practicing
- 4.4 ★
- 1 client review
- 1
- Bar admission
Practices in
Are you Sean James O'Hagan?
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Quick answer
Sean James O'Hagan is a prosecutor based in St. Louis, MO. The practice focuses on Criminal Defense. Sean has over 52 years of legal experience. Rated 4.4 out of 5 from 1 client review.
- Based in
- St. Louis, MO
- Experience
- over 52 years
- Known for
- Criminal Defense
- Handles Criminal Defense matters from St. Louis, MO.
- Over 52 years of practice as a licensed attorney.
- Recognized with BV Distinguished.
About Sean James O'Hagan: Sean James O'Hagan is a prosecutor based in St. Louis, MO. The practice focuses on Criminal Defense. Sean has over 52 years of legal experience. Rated 4.4 out of 5 from 1 client review.
Areas of practice
Practice areas handled by Sean James O'Hagan
Sean concentrates on criminal defense. Each area below outlines the kind of case Sean handles, typical outcomes to expect, and how the intake process starts.
Criminal Defense cases in St Louis, Missouri
Sean takes criminal defense matters in St Louis, Missouri. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Sean agrees to represent you.
Biography
About Sean James O'Hagan — Over 52 years of Missouri criminal defense experience
Sean James O'Hagan is a prosecutor based in St. Louis, MO. The practice focuses on Criminal Defense. Sean has over 52 years of legal experience. Rated 4.4 out of 5 from 1 client review.
Sean James O'Hagan is a lawyer practicing criminal law. Sean received a B.A. degree from Regis College in 1970, and has been licensed for 52 years. Sean practices in St. Louis, MO.
Sean's approach to criminal defense cases
Sean James O'Hagan is a lawyer practicing criminal law. Sean received a B.A. degree from Regis College in 1970, and has been licensed for 52 years. Sean practices in St. Louis, MO.
Who Sean represents
Sean reviews new inquiries case-by-case for criminal defense matters in St Louis and the surrounding Missouri area.
Credentials
Sean James O'Hagan's legal education and bar admissions
St. Louis University
J.D. · 1974
Regis College
B.A. · 1970
Jurisdictions
Sean's state bar admissions
Missouri
1974 · ACTIVE
Sean studied at J.D. in St. Louis University and B.A. in Regis College.
Law school and academic background
Sean completed J.D. in St. Louis University and B.A. in Regis College. Formal legal training is one signal of substantive knowledge — the day-to-day practice Sean runs in Missouri is where that training gets applied to real client questions.
Recognition
Awards, publications, and recognition of Sean James O'Hagan
Sean has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
BV Distinguished
Legal awards and honors
BV Distinguished.
Locations
Sean James O'Hagan's office in St. Louis
Sean's primary office is at Carnahan Courthouse, 1114 Market St., St. Louis, MO, 63105. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Sean James O'Hagan — 4.4/5 rating from 1 verified client review
Every review below is from a verified client of Sean. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing criminal defense attorneys in St Louis.
4.4
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Sean James O'Hagan claims this profile.
Read all reviewsHiring guide
How to hire Sean James O'Hagan — what to expect in your first consultation
Working with a new criminal defense attorney should feel structured. Here's how the first two conversations with Sean usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Sean charges for the initial consult. That fee is credited toward representation if you retain Sean'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; Sean will tell you what matters and what doesn't.
Questions to ask a criminal defense attorney in St Louis, Missouri
A short list to run through before you commit: How many criminal defense 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 Sean
Sean discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in criminal defense practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every criminal defense 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. Sean confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Sean's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many criminal defense practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Sean James O'Hagan
How much does it cost to hire Sean for a criminal defense case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Sean walks through the likely range during the consult so there are no surprises.
Does Sean offer a free consultation?
Sean charges for the initial consult; that fee is credited toward representation if you retain Sean's office. Some criminal defense attorneys offer free consults — check Sean's current terms during booking.
How long do criminal defense cases in Missouri typically take?
Simple criminal defense 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. Sean gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Sean take my case if I'm outside St Louis?
Sean is licensed in Missouri. Matters governed by Missouri law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Sean 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 Sean?
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. Sean will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Sean accepting new criminal defense clients right now?
Sean's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Criminal Defense attorneys serving St Louis, Jefferson City and Kansas City in Missouri
Sean handles criminal defense matters throughout Missouri. Each city below is a direct link into the search page for verified criminal defense attorneys in that community.
More counsel
Other top-rated criminal defense attorneys in Missouri
If Sean's intake is full or the fit isn't right, these criminal defense attorneys in St Louis handle similar matters. Every profile below is verified and open to consultations.





