Premier Denver

Criminal Defense 

Trusted, With More Than 25 Years Experience
Licensed in Colorado and Texas

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criminal law




personal injury law




bad faith


Our team is here to help you with all of you legal concerns. We have over 25 years of experience in criminal matters, and we will put that experience to use for you!

James Colgan has over a quarter of a century of trial experience from both sides of the courtroom, including the prosecution and defense in criminal trials. He began his legal career as a police officer. He has also represented plaintiffs in civil lawsuits. When you or a family member need a lawyer in Colorado, the Law Offices of James Colgan are the legal team for you.

Attorney Colgan began his career in the office of the district attorney, advocating for victims of serious crimes from DUI to sexual assault to homicide. As Chief Deputy District Attorney, he conducted numerous trials successfully, getting justice for the victims and removing dangerous criminals from the streets.

Attorney Colgan realized that he had a passion for helping people navigate the complicated legal system and supporting them as they get their lives back on track. He left the prosecution to advocate for people. He helps them get the benefits they are entitled to by law, whether that’s statutory compensation in a personal injury case or the strongest defense for a criminal defendant.

A former client described Attorney Colgan as a “pit bull in the courtroom.” He is a fierce advocate for his clients, with trial experience in the form of a rare blend of prosecution and defense in criminal matters and the plaintiff’s counsel in civil cases.

more about us

Choosing an Attorney with a Track Record of Success

AVVO Clients' Choice Award 2023
AVVO Clients' Choice Award 2022
AVVO Clients' Choice Award 2023

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What Our Clients Say About Us

  • After 40 plus years in business I found myself in a situation I had never encountered or imagined. Luckily, I was referred to Jim Colgan after I was accused of a sex crime by an employee. Because of Jim's efforts on my behalf through every stage of my attempted prosecution I was able to keep my business and my life. Jim's support and encouragement through preparation a nd subsequent trial were invaluable. Jim is not only a great attorney, but he cared about me personally and was determined I did not pay for a crime that I did not commit.
    Larry McMillan
  • James kept me informed about my options and provided excellent advice about how to best proceed after my car accident. I was able able to get the care I needed, which was my main concern. He has the experience to provide informed advice. I would recommend him!
    Sunshine divis
  • James Colgan is what all lawyers should be. He is ethical, moral, able to work “the legal system” to my best advantage. Throughout my cases, I felt I had a friend and legal expert applying all of his experience, resources and unique communication abilities to the highest level for my benefit. I would highly recommend James to anyone facing criminal charges.

A Good Defense Starts With A Good Defender

The information you obtain at this site is not, nor is it intended to be, legal advice. We welcome your calls, letters and email; however contacting us does NOT create an attorney-client relationship.

office address

The Law Office of James Colgan, LLC
11990 Grant Street #550
Northglenn, Co 80233

@ 2024 The Law Office of James Colgan, LLC | All Rights Reserved

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