
DUI Defense Attorney in San Antonio
Understanding DUI & DWI Procedures in San Antonio
In San Antonio, DUI and DWI cases are treated with significant scrutiny due to the potential risks to public safety. The legal process begins with an arrest in which officers assess your blood alcohol concentration (BAC) or conduct field sobriety tests. If charged, the case typically proceeds to a local San Antonio court where you will face arraignment and subsequent hearings.
At Calfas Law Group, PLLC, our local expertise allows us to provide informed legal guidance. Our familiarity with San Antonio’s court procedures and prosecutors enables us to craft strategic defenses tailored to your specific case. We focus on examining every detail of the arrest and detainment process to identify any procedural or statutory breaches.
Contact our reliable DUI Defense Lawyer in San Antonio at (210) 405-8315 to schedule a confidential consultation.
DUI Defense in Texas

Drunk driving is one of the most commonly charged criminal offenses in Texas and throughout the country. It only takes a momentary lapse in judgment for drivers to be accused of this crime, and if convicted, they can face numerous criminal penalties. If you or a loved one has been arrested for DWI or DUI, time is of the essence, and legal representation should be consulted as soon as possible.
At Calfas Law Group, our legal team includes former prosecutors who possess an intimate understanding of our criminal justice system. When you choose our firm to handle your drunk driving case, you will partner closely with a dedicated, knowledgeable San Antonio DWI/DUI defense attorney who knows what to look for in these cases. Many drivers have viable defense options, and our firm knows how to identify possible errors and shortcomings in these allegations.
The process begins with an in-depth consultation where we review all aspects of your situation. We take the time to understand the circumstances of your arrest, including any potential missteps by law enforcement. By meticulously reconstructing the events, we aim to identify areas where your rights may have been compromised. Our familiarity with the local courts allows us to strategically navigate the legal system on your behalf.
DUI vs. DWI in Texas
It’s important to realize that the State of Texas distinguishes between DWI (Driving While Intoxicated) and DUI (Driving Under the Influence). DWIs are usually charged to individuals who are legally intoxicated (.08 BAC) or who have lost control of their mental and/or physical capacity to responsibly operate a vehicle.
However, a DUI is typically issued to persons under 21 years of age who are found driving with any detectable amount of alcohol in their system. If these are your or your family’s circumstances, contact a DUI attorney immediately to review your case.
Our Firm Can Fight for You
When we begin building your defense, we combine the facts of your case with our legal knowledge, experience, and research of transportation codes, case law, and legal precedents. There are several reasons your case may have been handled improperly or was unjustified from the start, including:
- The arresting officer did not truly have probable cause to pull you over, or the reason for pulling you over was flimsy at best.
- Reports from third-party witnesses do not corroborate the police report.
- An unverified anonymous drunk-driving tip was the reason for your arrest.
- The field sobriety test was not administered properly, and/or the arresting officer was not properly qualified to administer field sobriety tests.
- A test other than the Standardized Field Sobriety Test was used, or the field sobriety test results cannot be trusted due to medical conditions, environmental conditions such as weather, or the surface on which it was administered.
- The arresting officer did not properly provide your Miranda warning (did not read your Miranda rights).
- Blood test results cannot be trusted due to a lack of qualifications by the technician or unsanitary conditions.
- Legal protocols were not followed properly, such as the 15-minute observation period.
Our detailed review of your arrest timeline and the procedures followed by law enforcement is crucial. Every step is scrutinized, from the initial stop to the execution of sobriety tests, to detect any inconsistencies or procedural errors. Additionally, we will evaluate any video or audio evidence available from the scene to ensure the accuracy of reports and testimonies provided by law enforcement. Our approach is comprehensive, ensuring that no aspect of your interaction with the authorities is overlooked.
Frequently Asked Questions
What Are the Common Defenses Against a DUI Charge?
There are several potential defenses against a DUI charge, each requiring thorough investigation and legal insight to validate. One common defense is challenging the legality of the traffic stop. If the officer did not have reasonable suspicion to initiate the stop, any subsequent evidence might be inadmissible. Other defenses focus on the accuracy and administration of sobriety tests, questioning whether proper procedures and qualified personnel were involved. Your legal representation can also scrutinize the chain of custody concerning breathalyzer or blood test results, seeking any instances of tampering or mismanagement. At Calfas Law Group, PLLC, we work tirelessly to explore every possible defense route to ensure your rights are protected and to navigate towards an optimal outcome.
How Does the Trial Process Work for DUI Cases in San Antonio?
In San Antonio, a DUI case begins with an arraignment where the formal charges are presented. Here, you will enter a plea of guilty, not guilty, or no contest. If a not guilty plea is entered, the case will proceed to a pre-trial stage, which might involve motion hearings and negotiations. During this stage, your attorney will file motions to challenge or suppress evidence and negotiate with the prosecution. If no plea agreement is reached, the case heads to trial. In the trial, evidence is presented, witnesses may testify, and your attorney will argue your defense. The outcome could lead to an acquittal, conviction, or in some cases, a dismissal. Navigating a DUI trial involves strategic planning and a keen understanding of local court operations, something we provide through our dedicated service.
What Should I Do After Being Arrested for a DUI in San Antonio?
After a DUI arrest in San Antonio, it is crucial to remain calm and compliant with law enforcement. Avoid volunteering information beyond your identification and request to contact your attorney. Collect any documentation related to your arrest, such as copies of the police report or bail information. Promptly contacting a San Antonio DUI attorney is essential. A swift legal consultation will help identify any procedural flaws in your arrest or charge. Your attorney can advise on immediate steps to protect your driving privileges and prepare for your first court appearance. At Calfas Law Group, PLLC, we offer prompt consultations to aid in understanding your rights and formulating a sound defense, ensuring you're supported throughout the legal proceedings.
What Sets Us Apart
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Results -DrivenOur goal is to obtain the highest favorable outcome for your case.
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Free ConsultationsWe offer initial free consultations as a starting point for our clients seeking counsel from our firm.
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DeterminedLitigation is what we are known for. If we have to litigate a case, we are always ready to do so on our clients' behalves.
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Trusted by the CommunityAll of our attorneys have familiarity with the local courts, having presented many cases throughout our years in practice.
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Experienced Attorneys
We offer comprehensive counsel for a broad range of family law, criminal defense, and personal injury matters.

Meet Our Experienced Attorneys
Prepared to Fight for You
Glowing Reviews
Former Clients Share their Experience
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“With a need to hire an attorney we consulted with Neil Calfas. We Hired! The case is being handled and everything is working out brilliantly. This is a very high quality, high-level law firm with some of the best attorneys in the state.”Shirleyann R.
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“Neil Calfas was the only lawyer to did not accept the offer and advised me that it was his legal opinion that the case should be investigated, so he was able to find that the "victim" was lying and he put pressure on the DA and was able to get my”Aken C.
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“Neil took the time to explain the process prior to taking the case. Advised me of how to proceed and explained less costly alternatives. Although busy, he is knowledgeable of the law and a friendly people person with legal contacts that can get the job don”Greg H.
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“Mr. Calfas is the best! Love him to death. Great lawyer and knows his business. He is straight forward and to the point & best of all, honest.”Cookie
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“If you are serious about getting your life back on track, after inheriting the disaster of a DWI charge, then Chase Butler, is in the league to take evasive, appropriate action. When I met Chase Butler, I knew there was hope. In minutes, after deliberating”Charles

