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

1,045 Profile Views

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Dana Greenholt

Jan 31, 2026

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

I was really stressed about my case in Austin, but Derek L. Seal made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled every detail wit...

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Lamar Frami

Jan 31, 2026

Really helpful and compassionate service from everyone at Derek L. Seal's firm

Just wanted to say a huge thanks to Derek L. Seal and the staff. They really went above and beyond for me and my family during a very difficult legal battle. We couldn't have done it without their con...

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Garry Hartmann

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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Michelle Moore

Jan 31, 2026

A huge weight off my shoulders thanks to the amazing work of Derek L. Seal

I wasn't sure who to call for my Administrative / Regulatory Law problem, but I'm so glad I went with Derek L. Seal. They really listened to me and understood my situation. It was such a relief to hav...

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Lauren Sawayn

Jan 31, 2026

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

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...