Avvo Review Score

5.0 /5.0

374 Client Reviews

Filter Avvo Reviews (374) Refine reviews to match your needs. Use the filters to quickly surface reviews that align with your case or priorities.

Showing 1 - 5 of 26 reviews | Payment Plans

Posted by A | October 01, 2025 | Hired Attorney | Criminal Defense

Best DUI Lawyer in SD

Mark is an amazing lawyer. He picked up my case last minute and helped me through the whole process. This was all new to me because it was my first time getting arrested. He is professional and easy to contact . With his help my case was dismissed and doesn’t even show up on my record. In my opinion ...mark was affordable and offered different payment option which was awesome. I would definitely hire mark again.

Mark Deniz

Replied last October 05, 2025

 Thank you for the kind words.  Communication is key for us.  I know people have a cloud over their head when they are going through the case.  I work hard to keep the trust people give me.  I was glad to have been a help. It is easy advocating for a nice person. The future is nothing but up for you.

Posted by Tony | September 19, 2025 | Hired Attorney | DUI & DWI

Outstanding Defense Attorney

I highly recommend Mark Deniz as a defense attorney. Having never been arrested for anything in my life I did not know where to turn upon a dui arrest. My wife suggested I get an attorney, so I started by looking on the internet. I was immediately drawn to Mark’s background as a prosecutor and as a d...efense attorney. It was Father’s Day and really didn’t expect to reach Mark. I left a message and heard back from Mark in five minutes. After that initial phone conversation I knew I had made the right decision. Mark took over immediately, handling all aspects of my case. I literally did not have to do anything. To make a long story short Mark was able to get my charge reduced below a dui with only a small fine. Mark’s fees were extremely reasonable as was his payment plan. Again Mark I thank you and your team for being so understanding and so strong for me through the entire process. If you need a strong defense attorney who really cares, no need to shop. Just call Mark Deniz.

Mark Deniz

Replied last October 05, 2025

You are a benefit to the community.  You were easy to come in an advocate for.  When I was a prosecutor I knew good people were coming into the process seeking fairness. The punishment did not always fit the act. It takes hard work, communication with the prosecution/judge, as well as having sound legal arguments. I am glad to have the pleasure of advocating on your behalf.

Posted by Barbara | December 24, 2024 | Hired Attorney | DUI & DWI

Trustworthy, kind and thorough

I consulted with several law firms, but once I spoke with Mark Deniz I knew he was the one to hire. He will review your case with you and explain the best possible outcome. I also hired him because he was a defense attorney in the past and has knowledge of what the defense considers in each case. Ma...rk explained everything thoroughly and made sure I was proactive to get the best results. I was stopped for a DUI who’s was reduced to a Wet and Reckless making fines and classes much less. Mark’s fee is very reasonable and he will work with you on payments if needed. He was truly my guardian angel!! So great full!!

Mark Deniz

Replied last December 25, 2024

Thank you for the kind words. You are 100% the person I envisioned helping when I moved from a prosecutor to the defense side. You had a story. You have good character. You were motivated to be proactive. We found salient arguments. That is always a combination that will get the best possible outcome. Thank you for your efforts. It truly is a team effort.

Posted by Alejandro | August 19, 2023 | Hired Attorney | Criminal Defense

Consult and HIRE Mark Lawrence!

I highly recommend Mark Deniz. He responded quickly and was very informative, caring and acted quickly to get ahead of the situation to persuade the District Attorney from not pressing charges. His flat fee schedule is reasonable and upfront, and although I was able to full pay, he does work with you... on a payment plan. Again, I would highly recommend Mark Deniz and his office. I was not required to show up to arraignment and my case was dropped 2 weeks later.

Mark Deniz

Replied last September 13, 2023

 Thank you for your positive review.  I narrow my practice with work with quality people as much as I can. This case is an example of working with someone you want to go fight for. Thank you for the kind words! 

Posted by anonymous | December 19, 2022 | Hired Attorney | DUI & DWI

Fantastic results!!

After an unfortunate incident leading to a long stressful DUI battle, I decided to retain Mark Deniz and his firm to work on my case. I researched a handful of law firms, and Mark was the only person who responded back to my call within a few hours on a Saturday. I also spoke with a few other lawye...rs on this matter, but Mark was the one who gave me a more realistic expectation of my case. He was very honest and easygoing and provided the best rate with a monthly payment plan from the other firms I have spoken with. Even before the first court date, he recommended I do a series of proactive tasks ahead of time, some, to be honest, I didn't even think about doing in the first place. He was very responsive in answering my questions throughout the time when my case was pending, which put my mind at ease (for as much as possible due to circumstances). He was honest with me about which specific proactive tasks would be beneficial to my situation and which would not be. Just a few days ago, I received great results for my case, and all thanks to Mark and his creative and proactive efforts. He even stopped my monthly payment plan and only charged me for the time he was actually on my case, something that I would not expect from a law firm. I hope I would not be in this dreadful legal situation again, but if so, I would not hesitate to contact Mark Deniz and his team for help.

Mark Deniz

Replied last January 03, 2023

We strive to provide first class representation for our clients, and there is no doubt that communication is one of the main keys to a successful experience.  Thank you for taking the time to provide this wonderful review, and thank you for the opportunity to represent you.

See All Client Reviews