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

1,034 Profile Views

Delbert Walter

Feb 02, 2026

Professional service and clear communication provided by Brendan J. Hennessey in Washington

I appreciate how Brendan J. Hennessey handled my case. No fluff, just straight to the point and very effective representation for my Environmental Law matter. They are obviously very experienced and k...

Alberta Schaefer

Feb 02, 2026

So glad I called Brendan J. Hennessey to handle my Environmental Law case in Washington

Just wanted to say a huge thanks to Brendan J. Hennessey 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 th...

Gertrude Ullrich

Feb 02, 2026

Exactly what I needed after my legal issue in Washington - Brendan J. Hennessey was a lifesaver

I was skeptical about hiring a lawyer for my Environmental Law issue in Washington, but Brendan J. Hennessey changed my mind completely. They were professional, responsive, and most importantly, they...

Olivia Zieme

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...