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

1,030 Profile Views

Santos Runolfsdottir

Feb 02, 2026

Would recommend Brendan J. Hennessey for sure to anyone in Washington needing legal help

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...

Kelli Hirthe

Feb 02, 2026

Top notch experts in Washington - Brendan J. Hennessey is by far the best lawyer I've ever had

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...

Angie Bradtke

Feb 02, 2026

Solid work and professional service from Brendan J. Hennessey in Washington for District of Columbia residents

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...

Raymond Stracke

Feb 02, 2026

A huge weight off my shoulders thanks to the amazing work of Brendan J. Hennessey

Doreen Kemmer

Feb 02, 2026

Highly recommend Brendan J. Hennessey for anyone needing expert Environmental Law help in District of Columbia

I didn't think I'd find such a good lawyer in District of Columbia, but here we are and I am thoroughly impressed. Brendan J. Hennessey is just awesome and exceeded all my expectations. No complaints...