$ 450-450 per hour
PRO
Thomas John Nellessen
Virtual Consultation Available
About Thomas
Biography
The Nellessen Law Office is a Denver Colorado criminal defense law firm serving the Denver metropolitan area. Specializing in DUI, drug cases, weapons cases and all other felony and misdemeanor matters, Thomas J. Nellessen and the Nellessen Law Office P.C., is here to serve your criminal defense needs.
Thomas Nellessen is a graduate of Metropolitan State College in Denver, Colorado and has lived in Colorado since 1983. While in college, Tom worked in the Douglas County court system and became failiar with the prosecutor's office and the judges in the 18th Judicial system. After law school, and while waiting to take the bar and receive the bar results, Due to staffing issues, Tom returned to the Douglas County courts at the request of the judge that he worked for before law school. Tom gladly returned to assist the Courts.
After passing the bar examination, Tom began his own practice and has been representing clients charged with criminal matters ever since. Tom has returned to Douglas County and now resides in the town of Parker, Colorado.
Representing criminal and DUI clients for over 25 years. Free consultations. Military discounts.
Tom Nellessen is a skilled Denver DUI Attorney who has been doing DUI cases for over 25 years.
The Nellessen Law Office handles domestic violence related offenses. Highly skilled attorney.
Practice Areas
3
Practice Areas
Divorce and Separation
80%
35 years | 275 cases
DUI and DWI
10%
35 years | 2,000 cases
Violent Crime
10%
35 years | 500 cases
Fees and Rates
Cost
Hourly Rates
Payment Methods
- Check
- Credit Card
Awards
2017 2016
2016
Licenses
Licensed in Colorado for 34 years
State: Colorado
Acquired: 1991
No misconduct found
Location
Johnson Law Group
(720) 452-2540
Fax
(866) 864-7670
Mobile
385 Inverness Parkway, Suite 250, Englewood, CO, 80112
johnsonlgroup.com/Gallery
Online Presence
Other places you can find Thomas online.
Thomas John Nellessen's Reviews
Avvo Review Score
16 Client Reviews
Filter Avvo Reviews (16)
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Practice Areas
What Clients Mention
Showing 1 - 4 of 4 reviews | Communication Style
Posted by Barkley | April 19, 2017 | Hired Attorney | DUI & DWI
BEST I HAVE SEEN
Tom is the complete package when it comes to an attorney. He is knowledgeable, highly experienced and very skilled in the courtroom. Tom is also a very caring person who fights to help people. The manner in which Mr. Nellessen handled my case was exceptional. He was very pleasant to the prosecutor...
Thomas Nellessen
Replied last April 19, 2017Thank you so much for the kind words. It is appreciated.
Posted by Shane McIntyre | August 03, 2016 | Hired Attorney | Divorce & Separation
Highly Recommend
Tom Nellessen was referred to me as a highly competent, qualified and caring attorney. He helped me through one of the most painful times in my life. Ive always heard how messy and revengeful divorce can be even after the fact. I am very grateful for Tom's expertise & commitment to my case, especiall...
Thomas Nellessen
Replied last August 03, 2016Shane, thank you for trusting me with your matter. WOW, What a ride it was! I know how difficult the entire situation was for you, but you handled it very professionally...which makes my job so much easier. Thank you for the kind words and the great review.
Posted by Jason | October 29, 2015 | DUI & DWI
Simply the BEST!
I hired Tom to help me deal with a DUI charge I recieved while being on my private property working on a four wheeler. The lack of in depth investigation skills of the Park county officer was pointed out in court after several very frustrating court appearances my case was completely dropped! Tom was...
Thomas Nellessen
Replied last October 29, 2015Jason, your case was a pretty wild ride. Unfortuanately, it took the DA a little longer than necessary to accept the flaws in the case. When the Judge tells the prosecutor to either dismiss the case or the court will, you know you have a good case! Thank you for the kind words and for allowing me to assist you in your matter.
Posted by Rosella | October 23, 2025 | Hired Attorney | Ethics & Professional Responsibility
My child safety was in this man’s hands and I was overcharged as if I would never realize and with no explanation or correction
I was handed over to Thomas at Johnson’s Law Group, where I was overcharged and billed for things that had nothing to do with my case. The invoices included wrong names and dates, and I never received any correction or explanation despite asking multiple times. After the original attorney left, I was...
Thomas John Nellessen's Lawyer Endorsements
"There’s a reason clients come back to Attorney Nellessen, he doesn’t just handle cases, he builds trust. His sharp thinking and measured approach make every case stronger. A cornerstone of our litigation team at Johnson Law Group."
"Tom is an extremely passionate about helping people both in his career and on his own free time. He is very knowledgeable, level headed, and takes the time to listen to his clients. Tom analyzes cases from the other prospective, looking at all sides of a case to avoid any surprises and holes in his theory. These attributes makes his advice and recommendations trustworthy and solid. It has been a pleasure working with Tom."
"I have had the pleasure of working with Tom Nellessen. He is Of Counsel in the same firm where I work in a similar capacity. I have had many occasions to review cases with him. Tom has many years of experience and a really good feel for how to handle cases. He is well regarded by prosecutors, judges and other members of the defense bar. He works his cases to obtain just outcomes for his clients."
"I have spent much time over the years speaking to Mr. Nellessen about many legal issues. He is a knowledgable, confident, experienced attorney worthy of the respect and esteem he commands in the legal community."
"I've known Tom professionally for 28 years, having first met him when I was a young DA in Douglas County. Tom was then and is today an extremely gifted advocate and leave no stone unturned in the pursuit of justice for his client. He has my highest endorsement."
"If your in trouble with the law you need a lawyer with knowledge, experience and the know how to get things done. You can find many lawyers to take your case but if you need to Win you only have one choice Thomas J. Nellessen, Esq. I endorse him."
"I am honored to endorse Mr. Nellessen. He is one of the most professional, committed, and talented attorneys in our community. He is dedicated to forging strong client relationships and is committed to going above and beyond in representing his clients. He is highly respected for his litigations skills and I highly recommend him."
"I endorse this lawyer. Tom know criminal law! He is honest, aggressive, and hard working. I've worked cases with him, and even after representing over 3500 clients, Tom taught me a few things about bettering myself as an attorney! I'd hire Tom for myself!"
"Few individuals come close to approaching the kind of intelligence and integrity in the practice of Colorado criminal law than Tom Nellessen. Tom is well known and well respected for the lengths he will go to aggressively advocate for his clients. He is not only admired by his colleagues in his field - he is admired and respected by the many Colorado judges in the criminal courts all over Colorado. Tom is the man I choose to consult when I have a particularly difficult criminal question - his thinking is clear - his advice sound - his counsel wise. I wholly endorse Tom as a man of unquestionable character - and I endorse him without reservation.. H. Michael Steinberg"
"Tom is a stellar courtroom attorney, blessed with skill, talent and personality which make him uniquely qualified for criminal defense. Importantly, I also know Tom to be a person of unassailable character. I would not hesitate to refer friends and family members to Tom, and I endorse him in the highest possible terms."
"I endorse this lawyer. I have known and watched Tom represent clients sucessfully for 25 years. He is respected within the legal community by Judges, district attorneys and lawyers. His dedication to acheiving justice is always his focus. Tom gives his all helping people in need, and they are fortunate to have hired Tom to represent them."
"Attorney Thomas Nellessen is a dedicated professional who will aggressively fight for his clients. He is highly respected by his colleagues as well as current and former clients. He is an asset to our legal profession."
"I endorse this lawyer. Tom is an experienced and well regarded trial lawyer who will both listen to you and work hard to achieve your goals as a client."
"I endorse this lawyer. From Mr. Nellessen's detailed and thoughtful answers, he proves that he is an excellent attorney and that you would be well-served with his representation."
Robert Barlow
Insurance lawyer
Maren Skulborstad
Family lawyer
Mark Solomon
Criminal defense lawyer
Malcolm Seawell
Criminal defense lawyer
Chris Halsor
Criminal defense lawyer
H. Aalsberg
Criminal defense lawyer
Robert Biondino
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Benjamin Hartford
Criminal defense lawyer
H. Steinberg
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Molly Jansen
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Craig Mastro
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Robert Grossman
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Experience
Honors
2020
Top 100 Trial Lawyers, National Trial Lawyers
2017
Distinguished, Martindale-Hubbell
2016
Notable, Martindale-Hubbell
2015
Notable, Martindale-Hubbell
Work Experience
1991 - 2024
Owner, Nellessen Law Office
Associations
2014 - Present
DUI Defense Lawyers AssociationMember
2012 - Present
Douglas/Elbert County Bar AssociationMember
1991 - Present
Colorado Bar AssociationMember
1991 - Present
Colorado Criminal Defense Bar AssociationMember
2019 - 2020
National Trial Lawyers AssociationMember
Sample of Legal Cases
People V. Adrian V.
Not Guilty
People vs. Tracy E.
Not Guilty DUI, Not Guilty DWAI, Guilty Careless Driving
.366 BAC Dismissed
Cased Dismissed
People vs. Jason T.
Case Dismissed
People v. Daniel D.
Not Guilty on All Charges
Education
1990
Northern Illinois University of Law
JD - Juris Doctor
Speaking Engagements
N/A
Looking for Conference
None at this time.
Publications
Languages
English
Activity
Legal Answers
Top Contributor
Thomas earned significant contribution points in 2017.
Legal Answers
Q&A
Ex wife denied visitation, If I see him later this summer, is it still a violation?
08 Jun 2025
Q&A
My parenting time start the second week of summer break. It's confusing to me
24 Apr 2025
Q&A
What will happen if my wife forges my signature on an insurance claim check during a divorce?
20 Apr 2025