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

1,044 Profile Views

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Alan Hickle

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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Jimmy Okuneva

Jan 31, 2026

Five stars for the incredible team at Derek L. Seal in Austin - they are amazing

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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Eloise Crooks

Jan 31, 2026

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

Honestly, I can't thank Derek L. Seal enough for everything they've done for me. They really know their stuff when it comes to Administrative / Regulatory Law and it shows in the results. 10/10 would...

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Troy Sanford

Jan 31, 2026

So happy with the results of my case thanks to the hard work of Derek L. Seal and staff

If you're looking for someone who actually cares and will fight for you, go to Derek L. Seal. They helped me out big time with my Administrative / Regulatory Law issue and kept me informed at every st...

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Muriel Treutel

Jan 31, 2026

Professional service and clear communication provided by Derek L. Seal in Austin

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...