Brendan J. Hennessey

4.5 (39 reviews )

Washington District of Columbia United States

Environmental Law

Recognized in Ones to Watch since 2024

202-663-8000 Website

About Brendan

Brendan J. Hennessey is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law.Brendan J., who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brendan J. is held by other top lawyers in the same geographic and legal practice area.

Brendan J. Hennessey is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law.

Brendan J., who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brendan J. is held by other top lawyers in the same geographic and legal practice area.

Practice Areas

Environmental Law

Education

Georgetown University

Awards & Recognition

Recognized: Environmental Law

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Reviews

4.5 / 5

39 Reviews

1,027 Profile Views

Matt Zboncak

Feb 02, 2026

Excellent legal representation provided by Brendan J. Hennessey for my Environmental Law case

Really glad I found Brendan J. Hennessey 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...

Madeline Hegmann-Lemke

Feb 02, 2026

Many thanks to Brendan J. Hennessey for the hard work and dedication to my legal matter

Super helpful and professional staff at Brendan J. Hennessey'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 leg...

Virginia Kub

Feb 02, 2026

Absolutely Great! I couldn't be happier with the service from Brendan J. Hennessey

If you need a Environmental Law lawyer, Brendan J. Hennessey 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 case. I f...

Jenny Dickinson

Feb 02, 2026

Excellent legal representation provided by Brendan J. Hennessey for my Environmental Law case

Best lawyer for Environmental Law in Washington. Period. I've seen others, but Brendan J. Hennessey is on another level. They truly care about their clients and work hard to get the best results. I am...

Harvey Morissette

Feb 02, 2026

Really helpful and compassionate service from everyone at Brendan J. Hennessey's firm

I wasn't sure who to call for my Environmental Law problem, but I'm so glad I went with Brendan J. Hennessey. They really listened to me and understood my situation. It was such a relief to have someo...