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After working for firms and handling numerous cases, I realized that one of the most important things to clients is having an attorney who understands their case from start to finish. When one hires a firm they often never hear from the attorney they originally spoke with again because that attorney only is in charge of intake. The person may not even have the opportunity to speak with their attorney about their individual case before making a payment and instead, their consultation might be referred to a case manager following a script, who may or may not be an attorney. Other times a person's case is transferred to various attorneys within the firm who may or may not know the details of the case. This can sometimes cause confusion with expectations, desired outcomes, probability of success, or frustration with the need to continuously repeat information or provide documents.
It is largely for this reason that I decided to start my own practice. When you hire me you can rest assured that I will be your attorney from start to finish. Your free initial consultation will address your goals and expectations from the start so you can decide whether to proceed with my representation. Thereafter, you can be assured that I will remain a part of your case until the end and will be in direct communication with you.
Since being admitted to the California Bar in 2010 and the Arizona Bar in 2014 I have focused almost entirely on criminal law. Arizona has some of the harshest laws and penalties in the country for common crimes such as DUI/DWI, and it is my goal to ensure that your rights are nonetheless protected. You may have a defense on constitutional grounds such as an unreasonable search of your vehicle, invalid stop, or violation of your rights to remain silent and obtain counsel. The law is consistently changing and I am focused on coming up with the best strategies to protect your constitutional rights.
If you are charged with a crime, give me a call and find out how I can assist you.
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Chat withState: Arizona
Acquired: 2014
No misconduct found
State: California
Acquired: 2010
No misconduct found
177 N. Church Ave. Ste. 1006, Tucson, AZ, 85701
Showing 1 - 5 of 20 client reviews from Avvo
Posted by Angel | September 2, 2025 | Hired Attorney
Got my case dismissed! Helpful and transparent through the whole process. 100% would hire him again if I needed.
Posted by anonymous | May 12, 2024 | Hired Attorney
William recently defended me for TWO DUI's against me. These two cases had been pending since 2022, and as everyone knows- Arizona is the harshest state in the US to receive a DUI in, so the odds of me beating these cases or having them reduced were very slim. William graciously took my case, was ver...
Posted by Daniel Perez | March 24, 2021 | Hired Attorney
I hired Mr. Parven to represent me in a case involving an overweight and a criminal offense while driving a commercial truck. From the moment he took my call, he was very professional and knowledgeable, and gave me a free consultation of what he thought the result of the case was going to be. Every...
Posted by Kenneth | July 30, 2020 | Hired Attorney
I do not have a lot of experience when dealing with attorneys but I am extremely glad I chose Mr. Parven to represent me. When someone is in the situation where they need to hire a defense attorney for the first time it can be overwhelming and very scary. William was approachable, down to earth, and ...
Posted by Stephen | October 7, 2019 | Hired Attorney
Facing a charge that would have ended my employment and therefore my livelihood, I was fortunate to find William Parven. While I know attorneys can never give guarantees, Mr. Parven answered my many phone calls, often after hours to give me assurance while we went through our 7 month court battle. ...
"Having referred clients to William, I am pleased to say that each client has reported back at William's fine work, competence, and professionalism. A great choice for a lawyer in my book!"
"I endorse this lawyer. I have worked directly with Mr. Parven on a few criminal defense cases and can say he is a true fighter. He is a very knowledgeable and hard working attorney."
"Willam Parven is an exemplary attorney. He has a breadth of knowledge in the area of Criminal Defense, DUI, and traffic law generally. I personally witnessed his tireless work ethic and determination to get his clients the best results possible. I highly recommend him for anybody in need of an honest, hard working and capable attorney."
"Fantastic lawyer with excellent research skills and analysis of the law. Mr Parven is not the type of lawyer to boast and bluster, he is calculated and detail oriented; he knows the law and argues the law. He is a true advocate for his clients. Highly recommended!"
"An excellent lawyer who treats clients with patience, care, understanding, and utmost professionalism - an even better person and I wholeheartedly recommend for future services."
"Mr. Parven is a highly skilled, diligent and knowledgeable attorney who is well-known in the legal community for his outstanding professionalism. He was able to obtain satisfactory results even for clients whose cases were incredibly difficult by dedicating his time and effort to achieve the best results. I certainly endorse this lawyer and have no doubt he will be of great help to anyone seeking legal advice or representation within his main areas of practice."
"I worked with William in my first job out of law school. He is intelligent, creative, and a fighter. He thinks "outside the box" to get the best possible outcomes for his clients, and never gives up. He is simply a great attorney!"
Speeding and traffic ticket lawyer
Criminal defense lawyer
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2022
Best Criminal Defense Attorneys in Tuscon, Expertise.com
2019
Nomination, Lawyers of Distinction
2018
Top Contributor, Avvo
2018
Client's Choice, Avvo
2017
Top Contributor, Avvo
2017
Client's Choice, Avvo
2016
NHTSA 24 Hour Course on DUI Detection Completion Certificate, S.O.R. Training Center
2016
Premier DUI Attorney, American Association of Premier DUI Attorneys
2015 - Present
Owner, Law Office of William J. Parven, PLLC
2012 - 2014
Attorney, The Ticket Clinic
2014 - Present
State Bar of Arizonamember
2010 - Present
State Bar of Californiamember
2016 - 2022
American Association of Premier DUI AttorneysExecutive Member
Dismissed
plea to minimums impaired DUI
Dismissed
Dismissed
plea to impaired DUI for minimum sentence
Reduced to Reckless Driving
Dismissed
Reduced to Reckless Driving
Dismissed
Dismissed
Guilty on dui slightest charge. All other charges dismissed
Dismissed
Dismissed with Driving School
DUI drug only, no interlock
Diversion (case will be dismissed after completion)
Reduced DUI .08
Reduced No Points
Dismissed
Reduced DUI Slightest
Dismissed with Driving School
Dismissed with Driving School
Dismissed
Dismissed with Driving School
Reduced Extreme DUI all other charges dismissed
Misdemeanor DUI slightest 2nd offense. No felony
Dismissed
Reduced to DUI Impaired
Reduced to DUI Impaired 1st offense all other charges dismissed
Reckless Driving
Reduced to civil speeding with lane change dismissed
DUI charge but no interlock required
Reckless Driving
Reduced to Extreme DUI, drug charges dismissed
Reckless Driving
Dismissed
Undesignated Offense with unsupervised probation (can be reduced to misdemeanor)
Reduced to DUI Impaired with no prior alleged, all other charges dismissed
Dismissed
Reduced to Extreme DUI
Drug DUI only (no interlock)
Dismissed
Dismissed
Reduced to Excessive Speed
Reduced to regular DUI
Dismissed
Dismissed
Reduced to Extreme DUI
Reduced to reckless driving
Dismissed
Dismissed with Driving School
Reduced to illegal parking (civil)
Reduced to regular DUI
Found responsible at trial.
Reduced speed, no CSA points
Reduced to regular DUI
Reduced to regular DUI
Reduced--No Points
Dismissed
plea with no jail time
Dismissed
Reduced to Misdemeanor Drug Paraphernalia
Dismissed with driving school
Reduced to misdemeanor theft without intent (no moral turpitude)
Dismissed
2010
JD - Juris Doctor
2007
BA - Bachelor of Arts
2016
CLE DUI Detection Completion Certificate
Legal Answers
Do I still need a interlock when I don't drink and that's not what my issue is.
24 Jul 2025
Got charged with DUI. I didn't fail the field sobriety tests but BAC came back high. What can I do?
05 Dec 2023
Can a cop pull you over for "your blinker being to bright"?
06 Dec 2023