Jason A. Marquez

Jason A. Marquez

3.6
Rating: 8.8

Licensed for 17 years

Divorce and separation Lawyer at Denver, CO
Practice Areas: Divorce & Separation, Criminal Defense, Child Custody ... +3 more

950 South Cherry Street, Suite 508, Denver, CO

About Jason

Biography

Practice Areas

Fees and Rates

Cost

Free Consultation

$0 first 60 minutes

Hourly Rates

$ 250-350 per hour

Retainer

Always


Payment Methods

  • Cash
  • Check
  • Credit Card

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Licenses

Licensed in Colorado for 17 years

State: Colorado

Acquired: 2008

Active

No misconduct found

Location

Márquez Law

950 South Cherry Street, Suite 508, Denver, CO, 80246

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Jason A. Marquez's Reviews

Avvo Review Score

3.6 /5.0

20 Client Reviews

5 star (13)
4 star (0)
3 star (0)
2 star (0)
1 star (7)

Posted by Eric | July 22, 2025 | Hired Attorney

This review is from a person who hired this attorney.

Flashy but that is all

I hired Jason based on a friends recommendation, and it was one of the worst decisions that I have ever made. I was looking for someone that would fight for me, and that is not what I got. Jason is flashy and organized but not a fighter. I ended up losing quite a bit because he was not effective i...n showing how much I was involved in my kids life, and how little my "stay at home" wife was not involved in extra things. I provided plenty of examples to show how uninvolved she was and none of them were used in court. Jason is expensive and I did not get what I paid for. I was actually charged $2600 for post divorce matters that added up to about 4 hours. He actually got beat by a Lawyer with 4 years of experience. I would not recommend Jason as a Divorce Lawyer.

Jason Marquez

Replied last September 11, 2025

We appreciate all feedback. We cannot discuss the specifics of your case in this forum. However, the outcome in your case is very aligned with Colorado law despite our extraordinary efforts to secure an outcome disproportionately in your favor.

Posted by Jennifer | April 16, 2025 | Hired Attorney

This review is from a person who hired this attorney.

Save your money and sanity - Go elsewhere!

I hired Jason Márquez to represent me in a modification of my existing decree, and I deeply regret that decision. What should have been a relatively straightforward matter turned into a prolonged, costly, and frustrating experience. Throughout the process, Jason was often late to hearings, which n...ot only added stress but also raised serious concerns about his professionalism. Much of the legal drafting appeared to be copied and pasted from other cases, with little customization or care given to the specifics of my situation. One of the most disappointing parts of this experience was that my ex-husband’s attorney had actually attempted to settle early on. Instead of working toward a practical resolution, Jason pushed forward with the case, continually assuring me that I had a "solid" position. This ultimately led to over $60,000 in legal fees over the span of a year. Looking back, the matter could have—and should have—been resolved far more quickly and inexpensively. I stayed with him longer than I should have, largely because I trusted his repeated assurances. But in hindsight, I wish I had followed my instincts and moved on when the red flags started to appear. If you're considering hiring him, I strongly recommend doing your due diligence and weighing your options carefully. For me, the cost far outweighed the value received.

Jason Marquez

Replied last September 11, 2025

We appreciate all feedback. However, we do not have any record of representing you in this matter and none of the issues raised herein are true.

Posted by anonymous | September 9, 2024 | Hired Attorney

This review is from a person who hired this attorney.

Wow ---! Not sure how he calls himself an attorney!

Needed help getting parenting time adjusted from my ex-husband. While it all sounded like it was a slamdunk case, Jason bled me dry with unnecessary filings and motions. He has no desire to work with the opposing counsel, which could have made things go much smoother and cost effective. He was late t...o 2 hearings. It was such an embarrassment. I am now having to re-do everything he promised we could get done over the past year. Save your money, run from this crook. He is an absolute rookie.

Jason Marquez

Replied last September 11, 2025

We appreciate all feedback. However, we do not have any record of representing you in this matter and none of the issues raised herein are true.

Posted by anonymous | June 4, 2024 | Hired Attorney

This review is from a person who hired this attorney.

Should have read the others reviews!

Working to make changes to current orders. Jason, up front, seemed like he knew what he was doing, I trusted him, took his advice, only to put me into a horrible position with my ex. He was tardy in responding, his advice, no that. I know better, was poor and only to drag matters out longer than ...needed. I guess this is how he plans to make more money. Do your research, and stay away from this crook!

Jason Marquez

Replied last September 11, 2025

We appreciate all feedback. However, we do not have any record of representing you in this matter and none of the issues raised herein are true.

Posted by Derek | January 24, 2024 | Hired Attorney

This review is from a person who hired this attorney.

Over charged and under served!

Wow! I got took! This guy sent me a bill for breathing! He missed TWO, count ‘em, TWO court appearances, and still charged me, AND he lost my case! I will admit, Jason is a charming, articulate young man, but…….”One who overbills , and doesn’t show up” simply doesn’t win the race! My suggestion, kee...p looking for a lawyer!

Jason Marquez

Replied last September 11, 2025

We appreciate all feedback. However, we cannot discuss the specifics of your case in this forum. The outcome in your case was very aligned with Colorado law despite our extraordinary efforts to secure a different outcome. Otherwise, the issues you raise here are either not true or accurate.

See All Client Reviews

Jason A. Marquez's Lawyer Endorsements

Endorse Jason
Jane Grace Michalakes headshot
Jane Michalakes

Family lawyer | Aug 24

Relationship: Fellow lawyer in community

"I endorse this lawyer. Mr. Marquez is one of the hardest working attorneys I know."

Brianne Nicole Falgien headshot
Brianne Falgien

Family lawyer | Oct 29

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Denise M. Minish headshot
Denise Minish

Divorce and separation lawyer | Oct 21

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Dianne A. Van Voorhees headshot
Dianne Van Voorhees

Family lawyer | Oct 18

Relationship: Fellow lawyer in community

"I endorse this lawyer. Jason is sharp and organized.He works hard and gives back to the community."

Nathan F. J. Bucar headshot
Nathan Bucar

Family lawyer | Oct 17

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Lauren M. Hulse headshot
Lauren Hulse

Divorce and separation lawyer | Aug 19

Relationship: Opposing Counsel on matter

"I endorse this lawyer."

Heather M. Coleman headshot
Heather Coleman

Divorce and separation lawyer | Oct 04

Relationship: Worked for lawyer

"I endorse this lawyer."

Kathryn Mccord Beck headshot
Kathryn Beck

Family lawyer | May 05

Relationship: Worked together on matter

"I endorse this lawyer. I have had the pleasure of working with Jason as a lawyer, and as a mediator. I have directly observed his skill and compassion as he seeks out the best possible outcome for his clients. He knows the law, and cares about people, to his client's great benefit."

Sara Michelle Cates headshot
Sara Cates

Unknown lawyer | Dec 02

Relationship: Worked together on matter

"I endorse this lawyer."

Sergei B Thomas headshot
Sergei Thomas

Family lawyer | Mar 16

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Rachel L. Young headshot
Rachel Young

Unknown lawyer | Mar 16

Relationship: Worked for lawyer

"I endorse this lawyer."

Zachary Alexander Chapman headshot
Zachary Chapman

Divorce and separation lawyer | Mar 14

Relationship: Worked for lawyer

"I endorse this lawyer. Very knowledgeable and driven by positive outcomes for his clients."

Christopher Robert Basler headshot
Christopher Basler

Divorce and separation lawyer | Mar 02

Relationship: Worked for lawyer

"Jason is a hard working and efficient attorney who always zealously represents his clients. Jason is a technician in both negotiation and the court room which leads to very satisfied clients. He will fight tirelessly for you."

William Howard Van Horn headshot
William Van Horn

Divorce and separation lawyer | Dec 10

Relationship: Opposing Counsel on matter

"Mr. Marquez is very throrough and attentive to detail. He is a very zealous advocate of his clients. He is very competent and effective."

Michael Donivan Evans headshot
Michael Evans

Family lawyer | Oct 06

Relationship: Fellow lawyer in community

"I endorse this lawyer."

View All Endorsements
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Whitney Manning

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Dianne Van Voorhees

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Dianne Sawaya

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Experience

Rating:  8.8 (Excellent)

Honors

2007

Oustanding Student Attorney Award, University of Denver Sturm College of Law

2007

Student Leadership Award, University of Denver Strum College of Law

Work Experience

2018 - Present

Managing Partner, Márquez Law

2008 - 2018

Senior Partner, Johnson Marquez Legal Group

Associations

2018 - Present

Law School...Yes We Can!

President

2017 - Present

Justice Sotoymayor Inn of Court

Member

2008 - Present

Rocky Mountain Children's Law Center

Guardian ad Litem

2008 - Present

Colorado Criminal Defense Bar Association

Member

2008 - Present

Colorado Bar Association

Member

2008 - Present

Colorado Hispanic Bar Association

Member

2008 - Present

Denver Bar Association

Member

2010 - 2014

Colorado Criminal Defense Institute

Board Member

2008 - 2010

Denver Bar Association, Metro Volunteer Lawyers

Volunteer Attorney

Education

2007

University of Denver Sturm College of Law

JD - Juris Doctor

2003

University of Colorado - Denver

MBA - Master of Business Administration

N/A

Westmont College

BA - Bachelor of Arts

Speaking Engagements

2015

Legal & Technology Expo

Technology in the Office and Courtroom

2015

Entertain & Ethics

Trying Cases with Technology

2013

Early Neutral Assessment

Early Neutral Assessment

2013

Colorado Bar Association

Technology in the Courtroom

2011

Collecting Attorney's Fees

Attorney's Liens and Judgments

Publications

Languages

English

Activity

Avvo Rating

Our Rating is calculated using information the lawyer has included on their profile in addition to the information we collect from state bar associations and other organizations that license legal professionals. Attorneys who claim their profiles and provide Avvo with more information tend to have a higher rating than those who do not.

What determines Avvo Rating?
  • Experience & background Years licensed, work experience, education
  • Legal community recognition Peer endorsements, associations, awards
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  • Discipline Disciplinary information may not be comprehensive, or updated. We recommend that you always check a lawyer's disciplinary status with their respective state bar association before hiring them.
Avvo Rating Levels
10.0 - 9.0 Superb8.9 - 8.0 Excellent7.9 - 7.0 Very Good6.9 - 6.0 Good5.9 - 5.0 Average4.9 - 4.0 Concern3.9 - 3.0 Caution2.9 - 2.0 Strong Caution1.9 - 1.0 Extreme Caution