Derek L. Seal

Derek L. Seal

Administrative / Regulatory Law Environmental Law Water Law
Recognized in Best Attorney USA since 2016

About Derek

Derek practices administrative and regulatory law with a focus on environmental permitting and enforcement. With more than 30 years of regulatory and legislative experience, Derek assists clients with a wide range of matters, including Texas Commission on Environmental Quality (TCEQ) contested case hearings and regulatory compliance, water supply and water rights, air, water, waste, and wastewater discharge permitting.Derek previously held roles as General Counsel of the TCEQ, Counsel to former TCEQ Chairman Kathleen Hartnett White, General Counsel in the Texas Legislature for the House Committee on Environmental Regulation, and General Counsel and Chief of Staff for Representative Warren Chisum.

Derek practices administrative and regulatory law with a focus on environmental permitting and enforcement. With more than 30 years of regulatory and legislative experience, Derek assists clients with a wide range of matters, including Texas Commission on Environmental Quality (TCEQ) contested case hearings and regulatory compliance, water supply and water rights, air, water, waste, and wastewater discharge permitting.Derek previously held roles as General Counsel of the TCEQ, Counsel to former TCEQ Chairman Kathleen Hartnett White, General Counsel in the Texas Legislature for the House Committee on Environmental Regulation, and General Counsel and Chief of Staff for Representative Warren Chisum.

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Reviews

4.6 / 5

38 Reviews

1,041 Profile Views

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Kristina Carter

Jan 31, 2026

Reliable lawyer you can count on - Derek L. Seal provided excellent service throughout

I appreciate how Derek L. Seal handled my case. No fluff, just straight to the point and very effective representation for my Administrative / Regulatory Law matter. They are obviously very experience...

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Daniel Greenfelder

Jan 31, 2026

Simply amazing representation from Derek L. Seal's office during my recent legal matter

I didn't think I'd find such a good lawyer in Texas, but here we are and I am thoroughly impressed. Derek L. Seal is just awesome and exceeded all my expectations. No complaints at all! They really ta...

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Bob Hodkiewicz

Jan 31, 2026

Derek L. Seal did a great job handling my complex Administrative / Regulatory Law case from start to finish

I've worked with a few lawyers in Austin over the years, but Derek L. Seal stands out for their honesty and thoroughness. They were clear about the process and kept me updated at all times. I felt con...

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Dana Abbott

Jan 31, 2026

Many thanks to Derek L. Seal for the hard work and dedication to my legal matter

Super helpful and professional staff at Derek L. Seal's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support and legal expe...

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Christy Labadie

Jan 31, 2026

Top notch experts in Austin - Derek L. Seal is by far the best lawyer I've ever had

Really glad I found Derek L. Seal for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in Tex...