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Harris County DWI Lawyer

If you’ve been arrested for DWI in Harris County, the next steps you take matter. A conviction can lead to license suspension, fines, and jail time. But more than that—it can affect your job, your family, and your future. At The Martinez Law Firm, we fight to protect your rights, your record, and your reputation.

Why Choose Herman Martinez for Your DWI Defense?

Former Chief Prosecutor with Over 25 Years of Experience
Attorney Herman Martinez has spent his entire legal career working in criminal law. He served as Chief Prosecutor in the Harris County District Attorney’s Office. He knows how the prosecution builds a DWI case—because he used to build them. Today, he uses that experience to dismantle weak charges and push for dismissals, reductions, or acquittals.

Boardroom to Courtroom Strategy
As the founding attorney of The Martinez Law Firm, Herman Martinez has represented thousands of Texans facing DWI charges. He understands the local courts, prosecutors, and judges. He crafts a focused defense based on facts, law, and cross-examination—never guesswork.

Award-Winning Legal Representation
Herman Martinez has been recognized by peers and clients alike. He has received a 10.0 “Superb” rating from Avvo, has been featured multiple times in Houston Texas Magazine as a Top DWI Lawyer, and was named a Top DUI Contributor by Avvo. He provides legal commentary for local media and has appeared on Houston TV and radio stations.

What to Do After a DWI Arrest in Harris County

The moment you’re arrested, time starts working against you. The state can suspend your license within days unless you take action.

Step 1: Hire a DWI Lawyer Immediately
You have just 15 days from the date of your arrest to request an Administrative License Revocation (ALR) hearing. If you miss that deadline, your driver’s license will be automatically suspended. We handle this hearing as part of our legal service.

Step 2: Do Not Speak to Prosecutors Without a Lawyer
Anything you say can be used against you. Let us communicate with the district attorney and begin building your defense.

Step 3: Start the Investigation
We collect evidence, review the police report, examine the dashcam or bodycam footage, and study breath or blood test results for errors. Every detail matters.

DWI Charges We Defend

First-Time DWI
A first offense in Texas can lead to fines, license suspension, and up to 180 days in jail. We work to reduce charges or seek dismissal where possible.

Repeat DWI Offenses
A second or third DWI brings harsher penalties. Prior convictions can lead to felony charges. We aggressively challenge these cases.

DWI with Accident or Injury
A DWI crash involving injury can lead to felony intoxication assault. We defend your rights and seek to limit your exposure to long-term consequences.

DWI with Child Passenger
This is a felony offense, even for a first-time DWI. We understand what’s at stake and fight to protect your freedom and parental rights.

Underage DWI (Under 21)
Drivers under 21 can face DWI charges with any detectable alcohol. We work to protect your record and help you move forward.

Commercial Driver DWI
If you hold a CDL, a DWI puts your career at risk. We understand federal and state regulations and work to defend your license and livelihood.

Understanding the Legal Process

The Arrest
Officers must have probable cause. If your traffic stop was illegal, the entire case may be thrown out. We evaluate every step of the arrest process.

Field Sobriety Tests
Officers often use these tests to justify an arrest, but they are subjective. We review the administration of the test for errors and inconsistencies.

Breath and Blood Tests
Machines malfunction. Lab results are mishandled. We look closely at how your BAC was measured and challenge any unreliable results.

Court Hearings
We handle all appearances, fight to suppress evidence, and file motions to dismiss charges. We communicate with you every step of the way.

What Makes The Martinez Law Firm Different?

We Know the Other Side
Herman Martinez spent years as a prosecutor. He understands their strategy, their weaknesses, and their assumptions.

We Don’t Back Down
Some lawyers pressure clients into plea deals. We prepare every case as if it’s going to trial. If your case can be dismissed, we push for that outcome.

We Keep You Informed
From start to finish, we explain your options, deadlines, and likely outcomes. You’ll never be left wondering where your case stands.

Your Future Matters. Get a Free Case Review.

A DWI arrest is serious—but it doesn’t have to define your life. At The Martinez Law Firm, we help good people in tough situations. We offer clear answers, honest guidance, and aggressive defense from day one.

Call now for a free consultation.
Se habla español.
We serve all of Harris County, including Houston, Pasadena, Humble, Baytown, and surrounding areas.