About Seth Q. Peritz

Seth Q. Peritz is dedicated to the practice of criminal defense in both Virginia and federal courts, accumulating experience since 2016. His legal journey commenced as a graduate fellow at the Loudoun County Public Defender’s Office, a role that laid the foundation for handling a significant caseload and gaining exposure to all levels of trial courts in Virginia. Prior to co-founding Crowley Peritz Law with partner Matthew Crowley in 2020, Seth contributed his legal skills to two distinguished firms, showcasing his commitment to the field.

Seth's academic prowess is evident in his undergraduate degree in Political Science with an emphasis on Public Law from Northern Illinois University in 2013. Following a graduate research fellowship, he pursued legal studies at the Marshall-Wythe School of Law at the College of William and Mary, earning his degree in 2016. Seth's personal and professional life converged when he met his wife in law school, prompting a move to Northern Virginia, her home area, where they now share the joy of raising their beautiful baby girl.

Post-law school and bar admission, Seth embarked on a fellowship at the Loudoun County Public Defender’s Office, where he honed his skills and navigated various trial court scenarios. His journey continued with a role at a small criminal and immigration law firm, where he managed traffic and handled a broad spectrum of criminal cases. In 2018, he joined forces with Matthew Crowley, his future partner, and then Managing Partner of a criminal defense firm. Rising swiftly to Senior Attorney, Seth cultivated a robust criminal defense practice.

The pivotal year of 2020 marked the establishment of Crowley Peritz Law, a venture that reflects Seth's unwavering dedication to his clients. His legal repertoire spans a wide array of cases, from simple traffic infractions and reckless driving to complex criminal matters, including assault, malicious wounding, strangulation, sexual assault, and drug-related offenses. Seth's intellectual enthusiasm finds particular satisfaction in DWI/DUI cases, which he approaches with a keen legal mind.

Seth's notable representation of an individual charged in the United States District Court for the District of Columbia for the events of January 6, 2021, colloquially known as the "Capitol Riot," brought him into the media spotlight. His work ethic and availability, evident in dozens of positive reviews on AVVO and a stream of personal referrals, underscore not only his professional enjoyment but also the genuine care he extends to his clients. This commitment is palpable in his trial work, where Seth consistently strives for excellence in pursuit of justice.

 

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Traffic Violations
Posted by anonymous
September 29, 2025
Hired Attorney Seth Q. Peritz

If I could give Seth 10 stars, I absolutely would. I found myself in a very precarious situation in Loudoun County, and from the very beginning Seth was everything I could have hoped for in an attorney; transparent, communicative, and honest about what was possible and what was not. As a Type A personality, I know I can be demanding with my questions, but Seth was endlessly patient and took the time to make sure I understood every step of the process. His depth of knowledge is remarkable; not only when it comes to the law, but also in understanding the nuances and “lay of the land” in Loudoun County. Thanks to his guidance, I was more than satisfied with the outcome. Most importantly, he safeguarded my security clearance in the process, which was critical for me. Seth is a rare professional; calm under pressure, exceptionally skilled, and genuinely dedicated to his clients. I would recommend him without hesitation, in a heartbeat.

 
Misdemeanors
Posted by anonymous
September 08, 2025
Hired Attorney Seth Q. Peritz

Mr. Seth Peritz is an outstanding attorney! He handled my case with incredible professionalism, deep knowledge, and attention to every single detail. He got my DUI charge dismissed, which was such a huge relief, and it wouldn’t have been possible without him. Seth is smart, strategic, and highly experienced. In court, he fought like crazy to prove my innocence while the other side tried their best to make me look guilty. He stayed on top of every aspect of my case and guided me through the entire process with confidence and clarity. If you need a lawyer who truly cares about his clients and fights relentlessly for the best outcome, just hire Mr. Peritz . you will be in good hands. I’m incredibly lucky I hired him, and I highly recommend him to anyone facing a DUI or refusal charge.

 
Traffic Violations
Posted by Mik
September 15, 2024
Hired Attorney Seth Q. Peritz

Mr. Seth Peritz is a brilliant lawyer. He is most responsive and always available when you need him. In the face of a challenging situation, he successfully resolved the issue, allowing our lives to move forward. Seth's calming presence and experience in the legal system rendered a happy outcome for me. Seth and his team also provided exceptionally prompt follow-up services, making me feel truly prioritized. If you need a lawyer, I highly recommend Seth Peritz.

 
Misdemeanors
Posted by Tiffany
September 10, 2024
Hired Attorney Seth Q. Peritz

Seth Peritz did an outstanding job representing me. He always responded to my emails within a timely manner and addressed every nervous concern I had. He never charged me more than was initially stated and had great advice for what I could do to help my case. My case was dismissed because of his dedication, and I am a happy lady.

Misdemeanors
Posted by anonymous
August 28, 2024
Hired Attorney Seth Q. Peritz

Every lawyer I contacted told me about how they would get me a good plea deal but Seth was the first one who said "I think we have a case" and "I didn't become a lawyer to take plea deals." And man did he deliver. In the court room I saw dozens of people with similar charges to my own, each of them taking the exact same plea deal that the other lawyers wanted me to take. Seth was the only one who took it to trial and he fought hard. As the trial went on, Seth would do research on the fly based on the prosecution's arguments, to poke holes in them, all while playing 4D Chess, positioning his arguments for all possible scenarios, going on for hours without letting up. In the end, it was the simple evidence he provided in the beginning that won the case, the rest was... theater? strategy? A mix of both probably. It worked. The point is, all charges were dismissed. Seth is the best lawyer I've ever experienced.

 
Felonies
Posted by anonymous
December 09, 2022
Hired Attorney Seth Q. Peritz

I was facing two felonies, and very scared I was going to jail. Seth was able to guide me on what I could do to help my case, and to get one dropped, and one down to a misdemeanor. He was honest about his expectations on the case from the beginning, and about the work I needed to put in to make that happen. This was my second time hiring him, and both times he guided me through what I could do, and the steps he was taking to get the results we talked about. I am very happy and relieved with the results, and wouldn’t hesitate to hire Seth again.

 
Traffic Violations
Posted by anonymous
August 04, 2022
Hired Attorney Seth Q. Peritz

I hired Mr. Seth Peritz to represent me on my DWI and refusal to breathalyze case. His knowledge and expertise in DWI defense was outstanding and gave me every bit of confidence in him as my lawyer. He quickly grasped the details of my case, calmed my nerves, was always honest and up front with regards to the options that I had and gave me truthful yet comprehensive answers to all of my questions. Mr. Seth was always available, responsive and professional. He was there through every step of the process and made a difficult situation as easy as it could possibly be. Mr. Seth took my case into trial and fought for both DWI and refusal to breathalyze and I was found NOT GUILTY! The outcome of my case was far better than I could have ever imagined and I firmly believe that was directly related to Mr. Seth’s extensive expertise in DWI defense. Mr. I am extremely relieved that I elected to use Mr. Seth for legal representation and would highly recommend others facing a DWI.

 
Felonies
Posted by anonymous
June 11, 2022
Hired Attorney Seth Q. Peritz

I had a misdemeanor that was upgraded to a felony once I left Va. Ultimately, I was detained out of town on a fugitive warrant and held for about a month. During this time, Seth worked harder toward getting me back to Va than my local representation. After I got back, Seth got me bonded out within a matter of hours and my case was dismissed. He is currently working on expunging my record. Throughout this process Seth has been diligent and professional, and showed concern for me and my situation. This was my 1st (and hopefully last) legal encounter, but I appreciate his effort and will certainly recommend Seth for all legal defense matters going forward. Thank you!

 
Misdemeanors
Posted by anonymous
April 11, 2022
Hired Attorney Seth Q. Peritz

I had a DWI case with an elevated BAC. Seth was very open and honest from the start about how he saw my case playing out. He was very upfront, was able to explain to me how everything was going to work and what I needed to do. He ended up getting it dropped down to improper driving, which was incredible! I never would have thought I’d have that outcome, all odds seemed against me. I would definitely recommend working with him, he did an amazing job.

 
Misdemeanors
Posted by anonymous
April 11, 2022
Hired Attorney Seth Q. Peritz

I had a DWI case with an elevated BAC. Seth was very open and honest from the start about how he saw my case playing out. He was very upfront, was able to explain to me how everything was going to work and what I needed to do. He ended up getting it dropped down to improper driving, which was incredible! I never would have thought I’d have that outcome, all odds seemed against me. I would definitely recommend working with him, he did an amazing job.

 

Services

Areas of Law

  • Criminal Law 2
    • Misdemeanors
    • Felonies
  • Other 1
    • Traffic Offenses

Experience

  • Bar Admission & Memberships
    Admissions
    2016, Virginia
    2018, United States District Court for the Eastern District of Virginia
  • Education & Certifications
    Law School
    William & Mary Law School
    Class of 2016
    J.D.
    Other Education
    Northern Illinois University
    Class of 2013
    B.S.

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