San Antonio DWI Attorney

Evidence-Driven Defense for Alcohol & Drug-Related Charges

A DWI arrest in San Antonio moves quickly. You may already be dealing with a license suspension notice, a court date, or a request for chemical testing. The situation can feel rushed and unclear, especially when you have not yet spoken with a lawyer. When you contact The Law Office of Rene A. Flores PLLC, the goal is simple: to give you a clear plan, explain what happens next, and begin building a defense that responds to the evidence in your case.

DWI cases are built differently from most criminal matters. They rely heavily on science, timing, officer decisions, and specific procedures that must be followed from the moment of the stop through the final blood or breath test. A strong defense begins with understanding these steps and knowing how to challenge the points where mistakes often occur. That is where our firm focuses its attention from day one.

Talk directly with a San Antonio DWI attorney today. Call (956) 606-3606 or contact us online to set up your free consultation.

Support That Starts Immediately and Stays Consistent Throughout Your Case

When you are facing a DWI charge, you need clear information early and dependable access to the person guiding your defense. The Law Office of Rene A. Flores PLLC keeps the process straightforward from the first call. You meet with an attorney, receive practical direction about your next steps, and know exactly who you will be working with as your case develops. Nothing is filtered through layers of staff, and nothing moves forward without your understanding and input.

Here is what you can expect from us:

• Free initial consultation. A direct conversation with an experienced attorney before you make decisions about how to proceed.
• English and Spanish communication. Clear explanations in the language you are most comfortable with, which matters in a city as diverse as San Antonio.
• Representation directly from Attorney Rene Flores. Your case is handled by the managing attorney from start to finish, not rotated among staff.
• A conveniently located office near major legal centers. Our San Antonio office sits about 10 to 15 minutes from the courthouse and surrounding legal institutions, allowing us to be where you need us promptly.

A Rare Level of Scientific Training Applied Directly to Your DWI Case

Laboratory results are treated as the centerpiece of many DWI cases. The State often points to blood alcohol concentration numbers, drug screens, or breath test readings as if they are unquestionable. 

That is rarely the case in practice.

Attorney Flores is the only attorney in South Texas who has earned the ACS-CHAL Forensic Lawyer-Scientist certification. This accreditation is awarded to lawyers who complete rigorous scientific coursework and pass a demanding examination focused on forensic chromatography and chemical testing. Few attorneys in Texas hold this designation, and none outside this region have completed the certification process.

Why this matters to your DWI defense:

• Chemical tests are only as reliable as the methods used to run them
• Machine calibration, sample handling, contamination, and timing can each affect accuracy
• Results must be interpreted within scientific standards, not assumptions
• Errors in the underlying data can significantly change the meaning of a reported BAC

Most people only see the final number on the lab report. We examine the full set of data that produced it. This level of review often reveals issues that would otherwise go unnoticed and allows us to challenge scientific claims with the detail they require.

Hire A Lawyer with Deep Local Insight into How DWI Cases Are Built in San Antonio

DWI investigations in San Antonio vary widely depending on the agency involved. SAPD, Bexar County deputies, DPS troopers, and task force units each follow their own practices for traffic stops, field testing, and chemical sampling. Knowing how these agencies document their work helps us identify issues that may not be visible on the surface, such as gaps in procedure, unusual decisions made during the stop, or inconsistencies in the testing process.

Attorney Flores’s background includes years of work as a prosecutor and many years on the bench as a Municipal Judge, giving him a rare view of how DWI cases are pursued by the State. He understands what prosecutors look for when determining whether their evidence will hold, what judges expect during hearings, and how small details can shift the direction of a case. That insight shapes how we prepare your defense, helping us challenge weak points early and present your case from a position of strategic strength.

Types of DWI Charges We Defend in San Antonio

DWI cases range from first-time arrests to complex felony allegations. Each charge carries its own procedures, evidence requirements, and potential consequences. The Law Office of Rene A. Flores PLLC defends against all forms of DWI, including:

• First-time DWI. Ground-level DWI allegations that often involve roadside testing, body-camera footage, and chemical sampling.
• Multiple or Repeat DWI. Cases where prior convictions increase the stakes and the penalties, and where the State moves quickly.
• Underage DWI. Allegations involving drivers under 21, often centered on “any detectable amount” standards.
• Felony DWI. Charges tied to prior convictions, accidents with injury, or situations involving minors in the vehicle.
• DWI with High BAC Allegations. Cases involving claims of elevated alcohol concentrations that require a close review of laboratory data.
• DWI Involving Drugs or Combined Substances. Allegations based on prescription medication, illegal substances, or a mix of alcohol and drugs.
• Commercial Driver DWI. Charges affecting CDL holders, where even minor findings can disrupt employment and licensing.
• Administrative License Revocation (ALR) Matters. Hearings and challenges connected to potential license suspension after a DWI arrest.

We Work Hard to Protect Your Driver’s License & Livelihood

Losing the ability to drive can create immediate problems. Work, school, childcare, medical appointments, and even basic errands often depend on having a valid license. A DWI triggers a second legal process outside the criminal case, and the deadlines move fast. We step in early to protect your driving privileges and give you a clear plan for what comes next.

We assist with every part of this process, including:

• ALR Hearings. We review the officer’s affidavit, the basis for the stop, and the State’s evidence to challenge the suspension and preserve your ability to drive while the criminal case continues.
• Challenges to Suspensions. Suspension notices often rely on paperwork that is incomplete, inaccurate, or unsupported. We examine each step of the process to determine where the State overreached or failed to meet its requirements.
• Occupational License Applications. When an occupational license is the best path forward, we prepare the petition, gather the required documents, and walk you through the court process so you can drive legally for work, school, and essential responsibilities.
• Compliance and Deadline Management. ALR matters involve strict timelines, filing requirements, and administrative rules. We track them carefully and guide you through each step so nothing falls through the cracks.

Why DWI Cases in San Antonio Require Focused, Local Defense

San Antonio sees a steady flow of DWI enforcement, and the patterns are familiar to anyone who pays attention to how local officers work. Stops often occur in the same high-activity areas: the I-35 and 281 corridors, downtown after weekend events, and the routes leading out of major nightlife districts. Officers watch these areas closely, and the decisions they make during those stops form the backbone of most DWI cases. 

A DWI arrest in San Antonio also triggers two separate processes that move on their own timelines. The criminal case focuses on whether the State can prove intoxication, while the Administrative License Revocation process can restrict your ability to drive long before a court date is set. Both tracks demand immediate attention, and both can influence the outcome of the other. 

When you work with The Law Office of Rene A. Flores PLLC, your defense is built by someone who understands how these systems operate and who knows how to protect your license while preparing the case ahead. Attorney Rene Flores understands how DWI investigations typically unfold and knows where important issues commonly arise, from the first observation of driving behavior to the way roadside tests are administered.

A DWI charge moves fast. Call (956) 606-3606 or send us a message now to secure your free consultation.