
Tommy W. Thornhill, Business Attorney in Slidell, Louisiana
Over 48 years of legal practice · focused on Business, Car Accidents, and Class Action · 3.3/5 rating from 3 verified client reviews
Senior PartneratThornhill Law Firm, A PLC
Slidell, LA
Practicing business in Slidell since 1978.
- 48+
- Years practicing
- 3.3 ★
- 3 client reviews
- 2
- Bar admissions
Are you Tommy W. Thornhill?
This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.
Quick answer
Tommy W. Thornhill is a senior partner based in Slidell, LA. The practice focuses on Business, Car Accidents, and Class Action. Tommy has over 48 years of legal experience. Currently practicing at Thornhill Law Firm, A PLC. Rated 3.3 out of 5 from 3 client reviews.
- Based in
- Slidell, LA
- Experience
- over 48 years
- Known for
- Business · Car Accidents · Class Action
- Handles Business, Car Accidents, and Class Action matters from Slidell, LA.
- Over 48 years of practice as a licensed attorney.
- Recognized with Peer Reviewed.
About Tommy W. Thornhill: Tommy W. Thornhill is a senior partner based in Slidell, LA. The practice focuses on Business, Car Accidents, and Class Action. Tommy has over 48 years of legal experience. Currently practicing at Thornhill Law Firm, A PLC. Rated 3.3 out of 5 from 3 client reviews.
Areas of practice
Practice areas handled by Tommy W. Thornhill
Tommy concentrates on business, car accidents, class action, criminal defense, and energy. Each area below outlines the kind of case Tommy handles, typical outcomes to expect, and how the intake process starts.
Business
View other Business attorneys
Car Accidents
View other Car Accidents attorneys
Class Action
View other Class Action attorneys
Criminal Defense
View other Criminal Defense attorneys
Energy
View other Energy attorneys
Formation
View other Formation attorneys
General
View other General attorneys
Insurance
View other Insurance attorneys
Litigation
View other Litigation attorneys
M&A
View other M&A attorneys
Maritime
View other Maritime attorneys
Personal Injury
View other Personal Injury attorneys
Product Liability
View other Product Liability attorneys
Real Estate
View other Real Estate attorneys
Slip & Fall
View other Slip & Fall attorneys
TBI/SCI
View other TBI/SCI attorneys
Business cases in Slidell, Louisiana
Tommy takes business matters in Slidell, Louisiana. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Tommy agrees to represent you.
Car Accidents cases in Slidell, Louisiana
Tommy takes car accidents matters in Slidell, Louisiana. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Tommy agrees to represent you.
Class Action cases in Slidell, Louisiana
Tommy takes class action matters in Slidell, Louisiana. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Tommy agrees to represent you.
Criminal Defense cases in Slidell, Louisiana
Tommy takes criminal defense matters in Slidell, Louisiana. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Tommy agrees to represent you.
Energy cases in Slidell, Louisiana
Tommy takes energy matters in Slidell, Louisiana. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Tommy agrees to represent you.
Biography
About Tommy W. Thornhill — Over 48 years of Louisiana business experience
Tommy W. Thornhill is a senior partner based in Slidell, LA. The practice focuses on Business, Car Accidents, and Class Action. Tommy has over 48 years of legal experience. Currently practicing at Thornhill Law Firm, A PLC. Rated 3.3 out of 5 from 3 client reviews.
Tom Thornhill’s law, energy and consulting practice is an outgrowth of the litigation, oil and gas, real estate and related developer practice of Thornhill Law Firm, A PLC. The Consulting includes consulting for oil and gas exploration, refinery and land development projects. With law and petroleum engineering education and the experience of Mr. Thornhill, our consulting practice in the energy industry and associated businesses and related capital and finance transactions and business combinations allows Thornhill companies to offer a depth and breadth that few other firms can match. Thornhill Consulting, LLC works with Thornhill Law Firm, A PLC to monitor trends and current developments to be different from other firms.
Thornhill Energy, Inc. has begun the development with a national lab of the concepts for four other secure ports projects off-shore, in addition to consulting for the development of refinery and geothermal facilities. Thornhill has personally undertaken permitting and development with partners of a Utah refinery and is negotiating the purchase of another existing, small refinery.
Thornhill Energy & Development Consulting, LLC has experience in all areas of the energy industry, including: drilling on-shore and off-shore oil and gas wells, development of liquefied natural gas plant projects, and development of ports projects, shipping, transportation, etc.
Members of the team of professionals associated with Thornhill Energy & Development Consulting, LLC include mechanical and industrial engineers with master’s degrees and extensive experience in project development and refining. In addition, the business side of the practice includes significant business association structuring, private and public project financing for the projects.
Mr. Thornhill’s petroleum engineering education and experience have been used to participate in offshore oil and gas wells, as well as in his law practice, and in service to the State of Louisiana. Mr. Thornhill’s service includes his being elected to serve as a member of the Louisiana House of Representatives, as a member of Appropriations, Joint Budget, Insurance and Retirement committees from 1996-2000.
In addition, Mr. Thornhill has extensive litigation experience, having been admitted to the bar of the United States Supreme Court, every state and federal court in Louisiana and Texas, and is admitted pro hac vice in various Mississippi, Texas, New Jersey, Minnesota, and California state and federal courts. Mr. Thornhill remains active in professional associations, including having served as President of the Louisiana Association of Justice, on committees of the Louisiana State Bar Association and active membership in the Federal and American Bar Associations. Mr. Thornhill is a regular lecturer on changes in the law, procedure and professional topics. Thornhill Law Firm has also been named as one of the top 100 Lawyers in Louisiana from 2011 - 2014 and named Top Lawyer in Louisiana for its commitment to ethical standards and professional excellence. In addition, Mr. Thornhill was appointed by the United States District Court for the Eastern District of Louisiana to serve as a member of the trial team that prepared for three years (4/2010-2/2013) and then tried for three months in 2013, the liability phase of the BP Multi-District Litigation from the Deepwater Horizon rig blow out of the Macondo well and as appointed lead counsel in other major class actions.
Working with Tommy on a business matter
Tom Thornhill’s law, energy and consulting practice is an outgrowth of the litigation, oil and gas, real estate and related developer practice of Thornhill Law Firm, A PLC. The Consulting includes consulting for oil and gas exploration, refinery and land development projects. With law and petroleum engineering education and the experience of Mr. Thornhill, our consulting practice in the energy…
Who Tommy represents
Tommy reviews new inquiries case-by-case for business, car accidents, and class action matters in Slidell and the surrounding Louisiana area.
Credentials
Tommy W. Thornhill's legal education and bar admissions
Paul M. Hebert Law Center, Louisiana State University
J.D. · 1977
Louisiana State University
B.A. · 1974
Jurisdictions
Tommy's state bar admissions
Texas U.S. Supreme C
2011 · ACTIVE
Louisiana
1978 · ACTIVE
Tommy studied at J.D. in Paul M. Hebert Law Center, Louisiana State University and B.A. in Louisiana State University.
Law school and academic background
Tommy completed J.D. in Paul M. Hebert Law Center, Louisiana State University and B.A. in Louisiana State University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Tommy runs in Louisiana is where that training gets applied to real client questions.
Recognition
Awards, publications, and recognition of Tommy W. Thornhill
Tommy has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
Peer Reviewed
Legal awards and honors
Peer Reviewed.
Affiliations
Tommy's professional memberships and bar associations
Slidell, Louisiana State and American Bar Associations Louisiana Trial Lawyers Association (President, 2003-2004) The Association of Trial Lawyers of America
membership
Locations
Tommy W. Thornhill's office in Slidell
Tommy's primary office is at 550 Gause Blvd., Suite 3, Slidell, LA, 70458. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Tommy W. Thornhill — 3.3/5 rating from 3 verified client reviews
Every review below is from a verified client of Tommy. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing business attorneys in Slidell.
3.3
3 client reviews
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Tommy W. Thornhill claims this profile.
Read all reviewsHiring guide
How to hire Tommy W. Thornhill — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with Tommy usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Tommy charges for the initial consult. That fee is credited toward representation if you retain Tommy'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; Tommy will tell you what matters and what doesn't.
Questions to ask a business attorney in Slidell, Louisiana
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 Tommy
Tommy 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. Tommy confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Tommy'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 Tommy W. Thornhill
How much does it cost to hire Tommy for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Tommy walks through the likely range during the consult so there are no surprises.
Does Tommy offer a free consultation?
Tommy charges for the initial consult; that fee is credited toward representation if you retain Tommy's office. Some business attorneys offer free consults — check Tommy's current terms during booking.
How long do business cases in Louisiana 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. Tommy gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Tommy take my case if I'm outside Slidell?
Tommy is licensed in Louisiana. Matters governed by Louisiana law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Tommy 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 Tommy?
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. Tommy will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Tommy accepting new business clients right now?
Tommy'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 Slidell, New Orleans and Baton Rouge in Louisiana
Tommy handles business matters throughout Louisiana. 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 Louisiana
If Tommy's intake is full or the fit isn't right, these business attorneys in Slidell handle similar matters. Every profile below is verified and open to consultations.





