
Brent Alan Sumner, Business Attorney in Clayton, Missouri
Over 19 years of legal practice · focused on Business, Car Accidents, and Criminal Defense · 4.9/5 rating from 20 verified client reviews
Clayton, MO
Practicing business in Clayton since 2007.
- 19+
- Years practicing
- 4.9 ★
- 20 client reviews
- 2
- Bar admissions
Are you Brent Alan Sumner?
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Quick answer
Brent Alan Sumner is an attorney based in Clayton, MO. The practice focuses on Business, Car Accidents, and Criminal Defense. Brent has over 19 years of legal experience. Currently practicing at The Sumner Law Group, LLC. Rated 4.9 out of 5 from 20 client reviews.
- Based in
- Clayton, MO
- Experience
- over 19 years
- Known for
- Business · Car Accidents · Criminal Defense
- Handles Business, Car Accidents, and Criminal Defense matters from Clayton, MO.
- Over 19 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About Brent Alan Sumner: Brent Alan Sumner is an attorney based in Clayton, MO. The practice focuses on Business, Car Accidents, and Criminal Defense. Brent has over 19 years of legal experience. Currently practicing at The Sumner Law Group, LLC. Rated 4.9 out of 5 from 20 client reviews.
Areas of practice
Brent's practice areas in Clayton
Brent concentrates on business, car accidents, criminal defense, dui/dwi, and general. Each area below outlines the kind of case Brent handles, typical outcomes to expect, and how the intake process starts.
Business
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Car Accidents
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Criminal Defense
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DUI/DWI
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General
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Health Care
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Medical Malpractice
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Personal Injury
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Product Liability
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Traffic
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Wrongful Death
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Business cases in Clayton, Missouri
Brent takes business matters in Clayton, 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 Brent agrees to represent you.
Car Accidents cases in Clayton, Missouri
Brent takes car accidents matters in Clayton, 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 Brent agrees to represent you.
Criminal Defense cases in Clayton, Missouri
Brent takes criminal defense matters in Clayton, 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 Brent agrees to represent you.
DUI/DWI cases in Clayton, Missouri
Brent takes dui/dwi matters in Clayton, 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 Brent agrees to represent you.
General cases in Clayton, Missouri
Brent takes general matters in Clayton, 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 Brent agrees to represent you.
Biography
Brent Alan Sumner, business attorney serving Clayton
Brent Alan Sumner is an attorney based in Clayton, MO. The practice focuses on Business, Car Accidents, and Criminal Defense. Brent has over 19 years of legal experience. Currently practicing at The Sumner Law Group, LLC. Rated 4.9 out of 5 from 20 client reviews. Brent works from Clayton, Missouri and takes on business matters across the region.
Working with Brent on a business matter
Brent Alan Sumner practices at The Sumner Law Group, LLC Read Full Bio
Who Brent represents
Brent reviews new inquiries case-by-case for business, car accidents, and criminal defense matters in Clayton and the surrounding Missouri area.
Credentials
Credentials — where Brent studied and practices
Saint Louis University School of Law
Juris Doctorate · 2006
Jurisdictions
Brent's state bar admissions
Illinois
2008 · ACTIVE
Missouri
2007 · ACTIVE
Brent studied at Juris Doctorate in Saint Louis University School of Law.
Law school and academic background
Brent completed Juris Doctorate in Saint Louis University School of Law. Formal legal training is one signal of substantive knowledge — the day-to-day practice Brent runs in Missouri is where that training gets applied to real client questions.
Recognition
Brent's legal honors and published work
Brent has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Locations
Brent Alan Sumner's office in Clayton
Brent's primary office is at 7777 Bonhomme AveSte 2100, Clayton, MO, 63105. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Brent Alan Sumner — 4.9/5 rating from 20 verified client reviews
Every review below is from a verified client of Brent. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing business attorneys in Clayton.
4.9
20 client reviews
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Brent Alan Sumner claims this profile.
Read all reviewsHiring guide
How to hire Brent Alan Sumner — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Brent usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Brent charges for the initial consult. That fee is credited toward representation if you retain Brent'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; Brent will tell you what matters and what doesn't.
Questions to ask a business attorney in Clayton, Missouri
A short list to run through before you commit: How many business 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 Brent
Brent discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every business 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. Brent confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Brent's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Brent Alan Sumner
How much does it cost to hire Brent for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Brent walks through the likely range during the consult so there are no surprises.
Does Brent offer a free consultation?
Brent charges for the initial consult; that fee is credited toward representation if you retain Brent's office. Some business attorneys offer free consults — check Brent's current terms during booking.
How long do business cases in Missouri typically take?
Simple business 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. Brent gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Brent take my case if I'm outside Clayton?
Brent 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 — Brent 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 Brent?
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. Brent will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Brent accepting new business clients right now?
Brent's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Business attorneys serving Clayton, St Louis and Jefferson City in Missouri
Brent handles business matters throughout Missouri. Each city below is a direct link into the search page for verified business attorneys in that community.
More counsel
Other top-rated business attorneys in Missouri
If Brent's intake is full or the fit isn't right, these business attorneys in Clayton handle similar matters. Every profile below is verified and open to consultations.





