Deandra Grant Law – Criminal & DWI Defense DWI Brand

Plano DWI Attorneys

With Offices in Dallas, Fort Worth, Allen, Denton, Waco & Rockwall

Do You Need Legal Help?



    Plano DWI Attorneys

    With Offices in Dallas, Fort Worth, Allen, Denton, Waco & Rockwall

    Do You Need Legal Help?



      "Deandra Grant Law fights hard for their clients and is always willing to go above and beyond. They are the best firm for DWI cases in DFW and beyond. Definitely hire them to represent you in any pending cases."

      - P. Williams

      "Deandra Grant made a tough situation so much better. She listened to my concerns and helped me so much with my case. I would recommend her to anyone needing legal services."

      - M. Haley

      "Deandra Grant Law handled my case with diligence and professionalism. Deandra Grant's reputation is stellar and now I know why. She has a team of individuals who provide quality service."

      - N. Coulter

      New! AI Legal Avatar — Get 24/7 Answers on Texas DWI Law, Penalties, and Defenses

      Our AI Legal Avatar provides instant, plain-language answers to your questions about Texas DWI laws—like penalties, license suspension, and defense strategies—anytime, day or night. While it's a helpful starting point, it doesn't replace the clarity and advocacy of our experienced DWI attorneys.

      As Seen On

      DWI Book BG

      Collin County Criminal Courts Guide
      By Attorney Deandra Grant

      If you’re facing a criminal charge in Collin County, understanding how the local courts work can make the process far less confusing. This guide explains where cases are heard, what each court handles, and what you can expect as your case moves through the system.

      Read Now

      Plano DWI Attorneys

      A DWI arrest in Plano triggers two simultaneous legal proceedings: a criminal case in Collin County courts and an Administrative License Revocation (ALR) proceeding through DPS. Plano’s restaurant, entertainment, and nightlife districts (including Legacy West, The Shops at Legacy, Willow Bend, and the restaurants along Park Boulevard, Preston Road, and 15th Street) are among the most active DWI enforcement areas in Collin County. The Plano Police Department’s traffic division conducts regular DWI patrols and saturation enforcement, producing a high volume of DWI arrests.

      Deandra Grant Law has defended DWI cases in Collin County since 1994. Managing Partner Deandra Grant and Partner Douglas Huff both hold the ACS-CHAL Forensic Lawyer-Scientist designation. Deandra Grant is also a trained SFST instructor and the author of The Texas DWI Manual. Every DWI case at Deandra Grant Law begins with an independent review of the forensic evidence (the breath test, the blood test, or the field sobriety tests) at the chemistry and methodology level.

      Deandra Grant Law – Criminal & DWI Defense Helps Residents Across Texas with DWI Defense – Including: Allen , Arlington, Belton, Cleburne, Collin County, Dallas, Denton, Fairview, Fort Worth, Frisco, Gainesville, Granbury, Hood County, Johnson County, Lewisville, Little Elm, McKinney, Park Cities, Parker County, Princeton, Richardson, Rockwall, Rowlett, Royse City, Southlake, Sunnyvale, The Colony, Waco, and Weatherford.

      The 15-Day ALR Deadline

      Critical: If you were arrested for DWI in Plano, you have only 15 days from the date of notice of suspension to request a hearing to challenge the automatic suspension of your driver’s license. Missing this deadline results in an automatic suspension. Contact us immediately to protect your driving privileges.

      DWI Penalties in Texas

      First offense — Class B misdemeanor: 72 hours to 180 days in jail, fine up to $2,000, license suspension.

      First offense with BAC 0.15% or higher — Class A misdemeanor: Up to 1 year in jail, fine up to $4,000, mandatory ignition interlock device.

      Second offense — Class A misdemeanor: 30 days to 1 year in jail, fine up to $4,000, 2-year license suspension.

      Third offense — Third-degree felony: 2 to 10 years in prison, fine up to $10,000.

      DWI with child passenger — State jail felony: 180 days to 2 years in state jail, fine up to $10,000.

      Intoxication assault — Third-degree felony: 2 to 10 years in prison, fine up to $10,000.

      Intoxication manslaughter — Second-degree felony: 2 to 20 years in prison, fine up to $10,000.

      Criminal Defense/DWI

      Criminal Defense Assault Boating While Intoxicated Cocaine Defense Drug Crimes DWI Gun Crimes Theft Defense Warrants  

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      Why the Science Behind Your DWI Matters

      Most DWI defense attorneys challenge procedure. The ACS-CHAL Forensic Lawyer-Scientist training held by Deandra Grant and Douglas Huff allows us to challenge the science itself:

      Blood testing.  GC-FID (gas chromatography-flame ionization detection) methodology, coelution errors, sample contamination, in vitro fermentation that can artificially elevate BAC readings in improperly stored samples, and improper blood draw procedures. The laboratory’s analytical method, instrument calibration records, analyst qualifications, and chain of custody are examined in every blood test case.

      Breath testing.  Partition ratio variability (breath testing assumes a fixed 2100:1 blood-to-breath ratio that varies significantly between individuals and is affected by body temperature). Mouth alcohol contamination from recent drinking, belching, or GERD. False positives from diabetes (acetone), certain diets, or other physiological conditions. Intoxilyzer 9000 limitations, including the machine’s proprietary source code and documented accuracy concerns.

      Field sobriety tests.  The Standardized Field Sobriety Tests (HGN, walk-and-turn, and one-leg-stand) must be administered under strict NHTSA protocols. Deviations in instruction, demonstration, or scoring affect the validity of the results. Deandra Grant is a trained SFST instructor and challenges administration and scoring errors in every applicable case.

      Retrograde extrapolation.  When the prosecution attempts to calculate a defendant’s BAC at the time of driving based on a test taken later, the retrograde extrapolation methodology (including the assumed elimination rate and the absorption phase assumptions) is challenged. The science of retrograde extrapolation involves significant variability that prosecutors frequently understate.

      Plano DWI Enforcement

      The Plano Police Department operates one of the most active DWI enforcement programs in Collin County. Key enforcement areas include Legacy West and The Shops at Legacy entertainment districts, where restaurant and bar traffic generates a high volume of late-night stops; the Highway 75 corridor through Plano; Preston Road; and the Tollway. Plano PD participates in multi-agency DWI enforcement campaigns during holidays and special events.

      Plano operates its own detention facility, where DWI arrestees may be held before transfer to the Collin County Jail in McKinney. 

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      Why Deandra Grant Law for Plano DWI Defense

      • ACS-CHAL Forensic Lawyer-Scientist — Deandra Grant and Douglas Huff.  Blood test, breath test, and field sobriety test evidence challenged at the chemistry and methodology level.
      • Trained SFST Instructor — Deandra Grant.  
      • The Texas DWI Manual.  Deandra Grant authored the definitive Texas DWI defense reference. 17 published law books total.
      • Defending DWI cases in Collin County since 1994.  The Collin County courts and the Collin County DA’s office are familiar ground.
      • 15-day ALR deadline response.  We act immediately to protect your driving privileges from automatic suspension.
      • Texas Super Lawyer since 2011.  AV® Preeminent rated by Martindale-Hubbell®.

      If you were arrested for DWI in Plano or anywhere in Collin County, call (214) 225-7117 for a free, confidential consultation. Or schedule online at texasdwisite.com.

      Frequently Asked Questions About DWI Arrests in Plano, TX

      Being recently arrested for DWI in Plano, TX, can be a daunting and confusing experience. You likely have numerous questions about the legal process and what lies ahead. At Deandra Grant Law – Criminal & DWI Defense, our experienced Plano DWI Attorneys are here to provide you with answers and guidance during this challenging time. Here are some frequently asked questions and their answers to help you understand your situation better:

      After a DWI arrest in Plano, it is crucial to remain calm and cooperate with law enforcement. However, you have the right to remain silent, and it’s often wise to exercise this right until you

      have consulted with an attorney. Your attorney can guide you on how to handle interactions with law enforcement and the subsequent legal processes. Additionally, your lawyer will help you understand the potential consequences and steps to take in preparing your defense

      A DWI arrest in Plano can have significant implications for your driving privileges. Following your arrest, your driver’s license may be suspended or revoked, depending on the circumstances and whether you refused a chemical test. It’s important to address this issue promptly by requesting a hearing with the Texas Department of Public Safety (DPS) to contest the suspension. Your attorney will assist in navigating this process and may help you secure a temporary license or other necessary measures

      The penalties for a DWI conviction in Plano vary depending on factors such as your blood alcohol concentration (BAC), prior offenses, and whether any aggravating circumstances were involved. Possible penalties include fines, jail time, community service, probation, and mandatory alcohol education programs. Additionally, a conviction can lead to a permanent criminal record and increased insurance rates. Your attorney will provide a detailed assessment of your case and work to minimize the impact of these potential penalties.

      Yes, you can contest a DWI charge. The success of your defense will depend on various factors, including the evidence against you, the legality of the traffic stop, and whether proper procedures were followed during your arrest. Your attorney will evaluate the details of your case, including the accuracy of field sobriety tests, breathalyzer results, and other evidence. With a strategic defense, it is possible to challenge the charges and seek a favorable outcome.

      During a DWI stop, you have several rights, including the right to remain silent and the right to refuse field sobriety tests. However, refusing to take a breath or blood test may result in automatic license suspension and other penalties. It is essential to understand your rights and how to exercise them effectively. Consulting with an attorney can help you navigate these rights and make informed decisions during your legal proceedings.

      An experienced DWI attorney can provide invaluable assistance throughout your case. They will review the evidence, challenge any procedural errors, negotiate with prosecutors, and represent you in court. Your attorney will work to achieve the best possible outcome, whether that means reducing charges, obtaining a dismissal, or securing a favorable plea deal. Having a knowledgeable advocate can significantly impact the resolution of your case.

      Your first court appearance, often called an arraignment, is where you will be formally charged and asked to enter a plea. At this stage, your attorney will present your case, discuss the charges with the judge, and address any bail or bond issues. Your attorney will also help you understand the legal process and prepare for subsequent court dates. It’s crucial to have legal representation to navigate this initial phase effectively and to begin building your defense.

      After a DWI arrest, you typically have a limited time to respond to the charges, including filing any necessary motions or requests for hearings. The exact timeline can vary based on the specifics of your case and local court procedures. Your attorney will ensure that all deadlines are met and that your rights are protected throughout the legal process.

      Client Reviews

      “Deandra Grant Law – Criminal & DWI Defense handled my case with diligence and professionalism. Deandra Grant’s reputation is stellar and now I know why. She has a team of individuals who provide quality service.”

      N. Coulter

      Read More Reviews