DUI Save Your License. Protect Your Future.

Boulder DUI Attorney

Defending Your Rights: DUI Defense

There are numerous types and charges associated with DUI cases. If you have been charged with in DUI or any charges similar to those listed above, it is of the upmost importance to speak to one of our experienced attorneys immediately.

Do not hesitate when you stand accused of DUI charges; your future rests on swift action and skillful guidance. Our attorneys will do everything in their power to assist you throughout the DUI process.

When confronted by the vigorous nature of the prosecution in DUI cases and the unmerciful approach taken by judges in convicting DUI offenders, it is absolutely essential to have a skilled attorney on your side to make certain that your rights and freedoms remain protected.

Do not take chances when it comes to DUI charges. These charges are very serious and law enforcement, prosecuting attorneys, and judges are never lenient towards convicted DUI offenders. If charges hang over your head, the surest way to navigate the treacherous terrain of Colorado law would be to seek the advice of a Boulder DUI defense lawyer.

Do not hesitate to call (303) 569-8410 today to request a free initial consultation to learn how we can protect your rights and freedom. Available 24/7!

Why Hire a DUI Attorney

When facing DUI charges, it is important that you do not attempt to handle them alone. These will place your entire future on the line. You need to be confident that you are doing everything possible to defend them. By getting the assistance of an experienced DUI lawyer, you will be able to protect your rights and fight for the most desirable outcome possible.

Denver DUI Defense

While we focus on protecting the residents of Boulder, Colorado with DUI charges, we are also prepared to help clients who live in the Denver area. By providing high-quality assistance, we remain committed to ensuring that our clients have the best possible chance of success.

DUI Defense in Boulder, Colorado

Lancaster Law Office, LLC has been expertly defending Colorado DUI cases of all types and circumstances for years. With nearly 20 years of experience, Attorney Barry Lancaster has a comprehensive understanding of the complexities and nuances of DUI law in Colorado to aggressively defend DUI cases throughout the state. We possess the knowledge and personalized legal services to greatly increase your chances of receiving favorable results when faced with DUI charges.

When confronted by the vigorous nature of the prosecution in DUI cases and the unmerciful approach taken by judges in convicting DUI offenders, it is absolutely essential to have a skilled attorney on your side to make certain that your rights and freedoms remain protected. Do not take chances when it comes to DUI charges. These charges are very serious and law enforcement, prosecuting attorneys, and judges are never lenient towards convicted DUI offenders.

If charges hang over your head, the surest way to navigate the treacherous terrain of Colorado law would be to seek the advice of a Boulder DUI defense lawyer. Contact a Boulder DUI attorney from our firm if facing drunk driving charges.

How Can a Boulder DUI Lawyer Help You?

If you have been criminally charged, it is easy to feel as if you do not have anywhere to turn. When dealing with the ramifications of a DUI charge, it is daunting to know where to turn. At our firm, we recognize the confusion associated with these situations and we have created this website in our efforts to help the accused.

Below you will find lists of the informational pages available on this site. On these pages, you will be able to learn more about the different types of charges and the nuances that are unique to these types of cases:

0.2 DUI

It is a criminal offense to operate a vehicle with a blood alcohol concentration over 0.08%. What, however, happens if your BAC is higher than that? If you are found to be operating a motor vehicle with a BAD over 0.2%, you will be facing enhanced penalties and even more complications regarding your case.

Blood Tests

Believed to be one of the most accurate forms of chemical testing, the blood test is used to determine the blood alcohol concentration of the defendant. There are, however, ways in which a false reading can be given. At our firm, we will work to prove the validity of the test results.

Breath Test Refusal

When arrested for driving under the influence, it is possible that you could have been asked to submit to a breath test. While you are legally able to refuse, you might face extra complications to your case if it is determined that you refused to take the test.

Breathalyzer Tests

Breath tests, using the Breathalyzer machine, are used to take a breath sample from the defendant. These are then used to determine the BAC of the defendant. While a preliminary form of testing, they are wrought with sources of errors. Improper calibration, administration of the test and time of the test can all result in false readings.


There is no instance in which a DUI is simple. If, however, you are a commercial driver, then your license is the source of your livelihood. If you are found guilty of drunk driving as a commercial driver, you could have this suspended of even revoked – which could cause countless complications in your life.

College Students & DUI

If you are found to be driving under the influence while in college, it is likely that you are under the legal drinking age of 21. At our firm, we recognize that the threshold for a BAC is infinitely lower for underage drivers. We are prepared to go the distance in our efforts to protect the rights of our clients.

DMV Hearings

Separate from the criminal case, those criminally charged with drunk driving will also face what is known as the DMV hearing – a civil case. This will be held by the state's DMV department and will determine the future of the defendant's license. We are prepared to help with both the civil and the criminal aspects of your case.

DUI Accidents

At our firm, we know just how daunting it can be to get involved in an accident that ties into a criminal DUI offense. However, we are not daunted by the complications and are prepared to go the distance in our efforts to defend your legal rights.

DUI Assault

In cases where a DUI accident resulted in a serious injury to a victim, you could find yourself facing criminal charges of DUI assault. This will simply compound the already complex situation of drunk driving. For hard-hitting defense you can trust, give us a call.

DUI Checkpoints

Law enforcement will often utilize sobriety checkpoints in their efforts to catch drunk drivers. This will basically be a roadblock which will sporadically check drivers as they pass through on the road. There, however, are many laws which must be abided for these checkpoints to be considered legal. If you were arrested for a DUI, we will work to determine the legality of these checkpoints.

DUI Defense

Defending your rights against the possibility of a DUI conviction is not a simple matter, but it is an important one. At our firm, we have extensive experience in handling DUI-related cases and are fully prepared to go the distance in our efforts to help you.


Those who face charges for driving under the influence likely have considerable confusion about what exactly they have coming. For this reason, we have compiled all of the most relevant information on this website – providing accessible and comprehensive answers. We have also put together a list of some of the most commonly asked questions so that you can get the answers you're looking for.

DUI License Suspension

One of the most common, and most inconvenient, forms of punishment for those convicted of a DUI is that of a license suspension. For some who rely on their driving privileges to uphold their career, this is not only irritating, it can threaten their very livelihood.

DUI Over .02

For underage drivers, it is considered to be a criminal offense to have a BAC over 0.02–a threshold much lower than for adults. Should they have a BAC between 0.03 and 0.05%, they face penalties that include three months of license suspension.

DUI Penalties

The penalties associated with drunk driving will vary greatly depending on the type of the DUI and the extenuating circumstances. Some of the most common penalties include license suspension, monetary fines, installation of an ignition interlock device and even incarceration.

DUI Plea Bargains

When criminally charged with drunk driving, it is important to realize that your entire future will be on the line. Penalties are severe and in some cases, it might be impossible to completely avoid them. In some cases, we will advise you to enter into a plea bargain. This will allow you to have the lightest sentence possible in some cases.


DUI criminal charges are not always in regards to alcohol. The state of Colorado takes an equally serious stance on driving under the influence of drugs–no matter whether this involves an illegal controlled substance or a perfectly legal prescription drug.


Even if you were found to be driving a vehicle with a BAC under 0.08% it does not mean that you are perfectly safe. Under state law, if you have a BAC between 0.05% and 0.08%, you could be charged with what is known as Driving While Ability Impaired.

Protect your future and enlist the help of our DUI attorney. We offer free initial consultations. Call us at (303) 569-8410 today!

Field Sobriety Tests

One of the first steps in determining the level of intoxication in a driver is known as a field sobriety test. While oft used, these are not without their dangers. Highly subjective and prone to error, these tests can incriminate a perfectly sober driver.

First DUI Offense

Even if you have a perfectly clean record, this does not mean that you do not have reason for concern. The law is equally harsh on first offenders – you could be facing serious penalties or could be making it more difficult for similar charges in the future.

Marijuana and DUI

One of the most often charged types of crimes involves drivers who are under the influence of marijuana. If you find that you are facing a charge of this nature, it is in your best interests to get us involved. We recognize what is on the line with criminal charges of this nature and will do everything possible to help you protect your rights.

Multiple DUI Arrests

If you have been arrested for drunk driving and have similar offenses already on your record, you will face an uphill battle. The law does not look kindly upon repeat offenders and with each subsequent arrest, you will find penalties that increase in severity.

Non-Colorado Resident DUI

Facing criminal charges across state lines is not a simple matter. If you are a non-Colorado resident who has been arrested for a DUI-related charge while in our state, you need a local lawyer that you can trust. At our firm, we know the best way to navigate through these complex cases and will do everything possible to help you.

The Courts

With years of experience, our firm is intimately knowledgeable regarding the courts throughout the Boulder, CO area. We know them and are therefore in the best position possible to help our clients when facing their case.

Traffic Infractions

Not every traffic violation is minor. If you have been charged with a traffic offense, you could be facing points added to your driving record, fines, the possibility of license suspension and could even have your vehicle confiscated. Not to mention, your insurance rates could skyrocket.

Unlawful / Illegal Police Stops

It is important to remember that not every time that the police pull you over is legal. There are many laws that outline the process of police stops and protocol. For example, there needs to be reasonable cause. They cannot just wait outside of a bar and pull you over when you leave.

Vehicular Manslaughter

The criminal offense of vehicular manslaughter refers to a drunk driving accident that resulted in a fatality. Due to the added element of homicide, this is one of the severest of criminal charges relating to drunk driving. We recognize what is on the line with a situation of this nature – you can rest assured knowing that we will do everything possible to protect your rights.

Violation of DUI Probation

Following a DUI, there is a possibility of them placing you on probation. These laws, however, are complex and the terms can be confusing. If you have been accused of violating your probation, you could be facing serious penalties. In some cases, they might even give incarceration in lieu of the probation.

Have a Question About Domestic Violence? Explore Our Frequently Asked Questions

You Are Not Just a Case Number

We Treat Our Clients as Real People Facing a Serious Problem
  • Barry Lancaster went above and beyond.

    “He was phenomenal in court. I cannot sing his praises loud enough, without him, I’d probably be in jail. He works for his client and is not afraid of standing up against a bullying court system. If you want justice, he is the guy to hire.”

    - Bernice I.
  • Lancaster Law provides extremely professional and results-oriented service.

    “Without his superior representation, I do not believe I would have gotten the same positive outcome without him.”

    - Cathy N.
  • Barry went above and beyond all of my expectations. He's the only lawyer I will ever hire.

    “Barry is the man for the job and he will do everything he can to have the best possible outcome for your situation. I can't thank him enough for his work and I am more than 100% satisfied with what he did for me!”

    - Mike G.
  • He fought for me like I was family.

    “He truly DEFENDED MY NAME AND REPUTATION. That being said, results matter and Mr. Lancaster got RESULTS. Highly, highly recommend him.”

    - Avvo User
  • He displayed an unwavering sense of commitment making me feel that I had top priority.

    “When I needed council the most, Mr. Lancaster met me with genuine care and compassion, making me feel at ease, almost immediately like a friend. Mr. Lancaster demonstrated a high level of legal understanding and was able to navigate and layout all potentia”

    - Avvo User

Put Your Case in the Right Hands

You Can Trust Lancaster Law Office LLC
  • Available 24/7 & Provide Free Consultations
  • More Than a Decade of Dedicated Legal Experience
  • Tenacious, Experienced, & Knowledgeable About DUI Law
  • Our Team Works With Experienced Investigators Who Can Help Find Evidence to Help Your Case
  • We Treat Our Clients as Real People Facing a Serious Problem; Our Clients Are Not Just Case Numbers
  • We Pledge to Fight for Our Clients; We Protect, Counsel, and Aggressively Fight on Their Behalf
  • ABA
  • Denver Bar Association
  • Colorado Bar Association
  • Avvo Badge

You Only Have 7 Days

Protect Your Future & Contact Our Firm to Schedule a Free Consultation
  • Please enter your first name.
  • Please enter your last name.
  • Please enter your phone number.
    This isn't a valid phone number.
  • Please enter your email address.
    This isn't a valid email address.
  • Please make a selection.
  • Please enter a message.