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

1,043 Profile Views

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Heather Bashirian

Jan 31, 2026

Highly recommend Derek L. Seal for anyone needing expert Administrative / Regulatory Law help in Texas

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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Teri Terry

Jan 31, 2026

Excellent legal representation provided by Derek L. Seal for my Administrative / Regulatory Law case

Best lawyer for Administrative / Regulatory Law in Austin. Period. I've seen others, but Derek L. Seal is on another level. They truly care about their clients and work hard to get the best results. I...

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Doreen Walsh

Jan 31, 2026

Would recommend Derek L. Seal for sure to anyone in Austin needing legal help

Derek L. Seal has been doing this since Recognized in Best Lawyers since 2016, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my legal ma...

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Jeffery Dooley

Jan 31, 2026

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

Solid experience overall with the law firm of Derek L. Seal. They know Administrative / Regulatory Law inside and out and gave me great advice. Very helpful and got the job done exactly as they said t...

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Marlene Hermiston

Jan 31, 2026

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

If you need a Administrative / Regulatory Law lawyer, Derek L. Seal is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of my ca...