Collin County DWI Defense

McKinney DWI Lawyer

Science-driven DWI defense for McKinney arrests, heard at the Collin County courts in your own city and handled from our Allen office fifteen minutes away.

  • Two ACS-CHAL Forensic Lawyer-Scientists
  • Former Dallas County Prosecutor
  • Author, The Texas DWI Manual
  • 500+ Cases Tried to Verdict

At no cost · Answered 24/7 · You have 15 days from the notice of suspension to request your ALR hearing

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    No cost. No obligation. Confidential.

    Recognized by Deandra Grant – Texas Super Lawyers 2026 Deandra Grant – Best Lawyers in America 2027 Deandra Grant – Justia 10.0 Lawyer Rating The National Trial Lawyers Top 100 Deandra Grant – D Magazine Best Lawyers in Dallas 2026 Avvo 10.0 Superb – Top Attorney Criminal Defense DUI Defense Lawyers Association Badass Award Martindale-Hubbell AV Preeminent
    Case Results

    Recent Collin County DWI Results

    Every case gets forensic-level attention. These are recent outcomes for people facing DWI charges in Collin County.

    Meet our trial team
    The Deandra Grant Law trial team, six Texas DWI and criminal defense attorneys
    DismissedJul 2026
    Charge

    DWI

    Collin County Trial Setting
    ReducedMar 2026
    Charge

    Intoxication Manslaughter

    Collin County Pre-Trial
    DismissedJul 2025
    Charge

    DWI

    Collin County Pre-Trial
    Not GuiltyJun 2025
    Charge

    DWI

    Collin County Trial
    Not GuiltyDec 2024
    Charge

    DWI

    Collin County Trial
    Not GuiltySep 2024
    Charge

    DWI

    Collin County Trial
    DismissedAug 2024
    Charge

    DWI

    Collin County Pre-Trial
    DismissedMay 2024
    Charge

    DWI

    Collin County Pre-Trial
    Not GuiltyJan 2024
    Charge

    DWI

    Collin County Trial

    Past results do not guarantee a similar outcome. Every case is fact-specific. Client names and identifying details have been omitted for privacy.

    DWI Defense in McKinney

    Facing a DWI in McKinney?

    Deandra Grant Law defends people charged with DWI in McKinney and across Collin County, from a first DWI to high-BAC, repeat, and felony charges, including DWI with a child passenger, intoxication assault, and drugged driving. McKinney is the county seat, which makes a McKinney DWI different from every other Collin County DWI in exactly one respect: the courthouse that decides your case is in your own city. A driver stopped in Plano or Frisco drives to McKinney for every setting. A driver stopped in McKinney is already there.

    That convenience does not buy a home advantage. Your file is handled by the Collin County District Attorney, not the City of McKinney, on the same docket and under the same policies as every other Collin case, including the county’s stated policy against reducing a DWI to obstruction of a highway. Whatever advantage exists comes from the evidence and from familiarity with these specific courts. This firm answers with more than 500 trials to verdict, an Allen office fifteen minutes down US-75, and a managing partner who wrote The Texas DWI Manual and trains DWI attorneys across the state. When the State’s case rests on a breath number or a DPS blood result, we go to the underlying science.

    Getting started costs nothing. Call or schedule online to talk through what happened. You have 15 days from the notice of suspension before your license suspension becomes automatic, so sooner beats later.

    15-Day Deadline

    Arrested in the last 15 days?

    Your license is on its own clock. It starts when you receive the notice of suspension, which in a blood case often arrives by mail weeks later.

    What We Defend

    McKinney DWI Charges We Handle

    Every Collin County DWI charge, from a first offense to intoxication manslaughter.

    First-Offense DWI

    Driving while intoxicated with no prior convictions, a Class B misdemeanor.

    First DWI penalties

    Second DWI

    A DWI with one prior conviction, a Class A misdemeanor with mandatory jail time.

    Second DWI penalties

    Third DWI

    A DWI with two prior convictions, a third-degree felony carrying two to ten years.

    Third DWI penalties

    DWI, BAC 0.15+

    A result of 0.15 or higher raises a first DWI to Class A.

    Why 0.15 matters

    DWI with Child Passenger

    A passenger under fifteen turns a misdemeanor DWI into a felony.

    Why this is a felony

    Intoxication Assault

    Causing serious bodily injury to another while intoxicated, a third-degree felony.

    Assault penalties

    Intoxication Manslaughter

    Causing a death while intoxicated, a second-degree felony carrying prison time.

    Manslaughter penalties

    Underage DWI

    Drivers under twenty-one face DUI charges for any detectable amount of alcohol.

    DWI vs. DUI

    Drug DWI

    A DWI where the intoxicant is a drug, prescribed or illegal, with no breath number involved.

    How they prove it

    Marijuana DWI

    Marijuana and edibles can support a DWI without any measurable level.

    The marijuana rules

    Prescription Drug DWI

    A valid prescription is no defense if the medication impaired your driving.

    Prescription rules

    CDL DWI

    A commercial license is disqualified even for a DWI in your own car.

    CDL consequences

    Boating DWI (BWI)

    Operating a boat while intoxicated, prosecuted much like a driving DWI.

    The BWI rules
    Local Knowledge

    What Actually Happens to a DWI in McKinney

    Collin runs its DWI cases differently from the counties around it. These are the local specifics that shape a defense here.

    Where your case is heard

    Every Collin County DWI, wherever the arrest happened, is heard at the Russell A. Steindam Courts Building at 2100 Bloomdale Road in McKinney. Misdemeanor DWIs go to one of the County Courts at Law, felonies to the District Courts. For a McKinney arrest that is a drive across town, not across the county.

    Who prosecutes

    The Collin County District Attorney's office works its cases up thoroughly and expects prepared lawyers. It also has a stated policy against reducing a DWI to obstruction of a highway, the plea that quietly disposes of DWIs in some other counties, so a McKinney DWI is generally prosecuted as a DWI.

    Where your blood goes

    Collin County sends DWI blood to the DPS crime lab in Garland, and the turnaround is often slow, which is frequently where the defense takes shape. The lab's chromatography, calibration, and quality control records are discoverable, and we request them in every blood case.

    Jail release

    After a McKinney PD or Collin County Sheriff's arrest you are booked at the Collin County Detention Facility on Bloomdale Road, next to the courts. Bond is set at magistration, usually within 48 hours.

    Pretrial programs

    Collin County runs the Burden to Blessing program and a Veterans Court, and it runs no-refusal weekends when a breath test refusal can turn into a warrant and a blood draw the same night. Whether your case qualifies for any alternative track is one of the first things we check.

    Visit the Allen Office Explore the Collin County Court Guide
    Why Deandra Grant Law

    Why Collin County Clients Choose This Firm

    What decides a DWI case is how well your lawyer understands the evidence.

    Former Prosecutor
    Deandra Grant prosecuted DWI cases as an Assistant DA, so she knows exactly how these cases get built.
    Two Forensic Lawyer-Scientists
    Deandra Grant and Douglas Huff both hold the ACS-CHAL Forensic Lawyer-Scientist designation from the American Chemical Society.
    Science Behind the Law
    An M.S. in Pharmaceutical Science and a Graduate Certificate in Forensic Toxicology, plus Intoxilyzer operator and maintenance training.
    500+ Trials Since 1994
    We work only in DWI and criminal defense, and we have tried more than 500 cases to verdict.
    We Wrote the Manual
    Deandra Grant authored The Texas DWI Manual for James Publishing, the reference other lawyers use.
    We Read the Lab
    A Collin County blood case rests on lab work. We request the chromatograms, calibration records, and QC data behind the number, and we challenge them at the chemistry level.
    After You Hire Us

    What We Do on Every Case

    From the first call, in order:

    • Request your ALR hearing before the 15-day deadline and use it to question the officer under oath.
    • Demand the dash and body camera video before it is destroyed.
    • Pull the full discovery file: offense report, calibration and maintenance logs, lab records, certifications.
    • Read the underlying chemistry ourselves: the chromatograms and the QC data, not the summary report.
    • Re-score the field sobriety tests against NHTSA protocol, on video.
    • File the motions the evidence supports, because suppression is how DWI cases end.
    • Build your mitigation file, with clinical assessments, at no cost to you.
    • Try the case if the offer is not right. Prosecutors know which firms try cases.

    We quote a flat fee after a consultation at no cost to you, so the investment is known before you commit.

    Reviews

    What Collin County Clients Say

    613 verified reviews and counting. Real Texans, real charges, real outcomes.

    ★★★★★

    They are very responsive to requests and questions. Doug went above and beyond to fight for me and get the best possible deal I could in Collin County. I even had questions during probation and they were quick to answer and help (which they didn't have to do).

    JA
    Jordyn Adams
    Jun 2022
    ★★★★★

    My son was facing possible prison prison time, I was afraid. But by the Grace of God I found Deandra Law Firm where Doug and Jada both worked awesome deals for my son in both counties he was facing..no prison. Thank you for being team Vick for us

    KV
    Karen Vick
    Mar 2026
    ★★★★★

    Deandra Grant Law is top-notch! I was provided with great resources from day one. Elena was also super helpful and patient! They're the perfect team to guide you through a tough time.

    SG
    Stephanie Gonzales
    Feb 2026
    Read All Reviews on Google
    Attorneys

    McKinney DWI Attorneys in the Collin County Courts

    Forensic-science training, three decades of Collin County defense, and the courtroom record to back it up.

    All Attorneys
    Press

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    Across the County

    Serving McKinney and All of Collin County

    We defend DWI cases across McKinney and the rest of Collin County: Plano, Frisco, Allen, Prosper, Celina, Melissa, Princeton, Fairview, and Wylie. Wherever the stop happened, the case is prosecuted in McKinney, and those are courts we work every week.

    The full county walkthrough is on Collin County DWI Lawyer, and the building itself on the Collin County courts guide. Facing a non-DWI charge? See Collin County Criminal Defense Lawyer.

    Historic Downtown and the courthouse

    The Collin County courts sit in McKinney at the Russell A. Steindam Courts Building on Bloomdale Road, with the county detention facility nearby, so a McKinney arrest is booked and set within a few miles of where it happened. The historic courthouse on the square no longer hears criminal cases.

    Stonebridge Ranch, Craig Ranch, and US-75

    McKinney PD and DPS stops on US-75, SH-121, and Eldorado Parkway produce a steady share of the city DWI arrests, and all of them are prosecuted by the Collin County DA under its policy of not reducing DWIs.

    Prosper, Melissa, and Princeton

    Arrests north and east of McKinney on US-380 and US-75 are Collin County cases heard in McKinney, unless a Prosper stop fell on the Denton County side of that city.

    Close to the Courthouse

    Our Allen Office

    Fifteen minutes from the McKinney courts down US-75. Free parking on site at the Atrium building.

    The Deandra Grant Law office in Allen
    Address
    1333 W. McDermott Drive, Suite 180
    Allen, TX 75013
    (972) 848-8828
    Consultation

    At no cost and confidential, in person, by phone, or by video.

    Office Hours
    Mon – Fri8:30 AM to 5:30 PM
    Sat – SunBy appointment
    Phone intake24 hours
    Parking

    Surface and covered parking at no cost on site at the Atrium building, with visitor spaces near the main W. McDermott Drive entrance.

    Directions to the Allen Office

    1. From Russell A. Steindam Courts Building (McKinney) 9.5 mi / 15 min

      From 2100 Bloomdale Road, take US-75 South and exit W. McDermott Drive in Allen. Turn right and continue west; the Atrium building is at 1333 W. McDermott.

    2. From US-75 / Central Expressway 1.0 mi / 3 min

      Exit W. McDermott Drive and head west toward Alma Road. The Atrium at 1333 W. McDermott is just past the Watters Road intersection.

    3. From Plano 10.5 mi / 18 min

      Take US-75 North, exit W. McDermott Drive in Allen, and turn left across the highway. Continue west to 1333 W. McDermott.

    4. From Frisco / Sam Rayburn Tollway (SH-121) 12.0 mi / 20 min

      Take SH-121 east to US-75 North, then exit W. McDermott Drive and head west.

    5. From Downtown Dallas 26.0 mi / 35 min

      Take US-75 North (Central Expressway) to Allen, exit W. McDermott Drive, and turn left across the highway.

    Also From This Office

    Court guides for the counties this office covers: Collin County, Grayson County, McKinney, Plano, Frisco.

    Start Here

    Wherever You Are in Your Case, Start Here

    A DWI case has many moving parts. Find the question you are asking right now.

    “I’m out of jail. Now what?”

    What happens next, from booking through your first court date, and the deadline that comes first.

    Booking to court date

    “Will I still be able to drive?”

    A DWI arrest starts a second, separate case against your license, and it runs on a 15-day clock.

    Save your license

    “What even counts as a DWI?”

    What Texas actually has to prove, and the three elements every case rests on.

    The three elements

    “What exactly am I charged with?”

    Texas charges DWI at six levels, and four facts can turn a misdemeanor into a felony.

    See the charge levels

    “How bad can the sentence get?”

    What a first, second, or felony DWI carries in jail time, fines, and suspension.

    Jail, fines, suspension

    “Is their evidence any good?”

    Breath, blood, and roadside tests: what each measures and where each one goes wrong.

    Where the tests fail

    “Was the stop even legal?”

    What police need before the lights come on, what the roadside can and cannot require of you, and how to tell afterwards.

    The 24 driving cues

    “What can be done about it?”

    Every Texas DWI defense by category, from the stop through the elements the State still has to prove.

    Every defense, by type

    “What happens next, and when?”

    Every stage of a Texas DWI case, from filing through disposition, and what happens at each.

    Walk through a case

    “How does my case end?”

    Dismissal, acquittal, reduction, deferred, probation, or jail, and which endings let you clear your record.

    See how cases end

    “What does this do to my life?”

    What a DWI touches beyond the courtroom: your job, insurance, immigration status, and license.

    What a conviction costs

    “Who should I hire, and what will it cost?”

    What to ask, which credentials matter in a DWI case, what fees should cover, and the red flags.

    Credentials and fees

    Not sure what a term means? Check the glossary.

    Not a DWI Case?

    The Rest of What We Defend

    DWI is the majority of our work, not all of it. The same attorneys handle these charges in the same courthouses.

    McKinney

    McKinney DWI Questions, Answered

    Where is my McKinney DWI case heard?

    At the Collin County courts in McKinney, at the Russell A. Steindam Courts Building at 2100 Bloomdale Road. A first or second DWI goes to one of the County Courts at Law and a felony DWI goes to a District Court. Your court assignment appears on your bond paperwork, and our Collin County court guide covers the building.

    Does a McKinney DWI attorney have an advantage because the courthouse is here?

    No. The Collin County District Attorney prosecutes arrests from the whole county on the same terms, so being arrested in the county seat does not change how your file is treated. Familiarity with these courts, these prosecutors, and the DPS lab that produces the blood result is the advantage that exists.

    What should I look for in a McKinney DWI lawyer?

    Someone who regularly appears in the Collin County courts, since that is where your case is and where every other Collin DWI is too. Ask how they handle a blood case, because Collin County does not offer the obstruction reduction that resolves DWIs elsewhere, which means the science decides more cases here. Start with the defenses that actually work.

    How long do I have to save my license after a McKinney DWI?

    15 days from the notice of suspension to request an ALR hearing, or the suspension is automatic. Inside the window, call today. Past it, an occupational license may keep you driving.

    Can a first DWI end without a conviction?

    It can. Since September 1, 2019, Texas law lets a judge grant deferred adjudication on a first DWI when your alcohol concentration was under 0.15, you have no prior conviction under the intoxication statutes, and you did not hold a commercial license at the time. An ignition interlock is a required condition, and the decision is the judge's, not automatic. Deferred is not a dismissal, but the case ends without a final conviction. It is not available where a child was in the car, or on intoxication assault or intoxication manslaughter. Our guide to deferred adjudication covers who qualifies and what it does to your record.

    Is there a DWI lawyer near me in McKinney?

    Deandra Grant Law has no McKinney office. Our Allen office serves Collin County and is fifteen minutes from the courts in McKinney where your case is heard. The first consultation works by phone or video, so you can get advice the same day.

    What does a DWI lawyer in McKinney cost?

    It depends on the charge and whether the case is headed to trial, and we are direct about numbers at the first call. The consultation is free and we offer payment plans. Our fee guide explains what a DWI defense should and should not cost, and How Much Does a DWI Cost in Texas? covers the fines and fees a conviction adds.

    Is a DWI a felony in Texas?

    Usually not the first time. A first DWI is a Class B misdemeanor, or Class A if your alcohol concentration was 0.15 or higher, and a second DWI is a Class A misdemeanor. It becomes a felony with a third offense (third-degree felony, two to ten years), any DWI with a passenger under 15 (state jail felony), intoxication assault (third-degree felony), or intoxication manslaughter (second-degree felony). Our felony DWI guide covers each level.

    What is the legal alcohol limit in Texas?

    0.08 for most drivers, 0.04 for anyone holding a commercial driver license, and any detectable amount for a driver under 21. The number is not the whole story: Texas also defines intoxication as losing the normal use of your mental or physical faculties, so a driver under 0.08 can still be charged, and a 0.08 result can still be challenged on how the sample was taken and tested. See what 0.08 actually means.

    How long can my license be suspended after a McKinney DWI?

    The administrative suspension comes first. A failed breath or blood test brings 90 days for a first offense, and a refusal brings 180 days. A prior alcohol-related contact in the last ten years raises those to one year and two years. A conviction can add its own suspension of 90 days to a year. Requesting the ALR hearing within 15 days of the notice of suspension is the only way to contest the first one, and an occupational license can keep you driving in the meantime. See our license guide.

    Will I go to jail for a first DWI in Collin County?

    The statute allows it: a first-offense DWI carries 72 hours to 180 days in the county jail, and up to a year if the result was 0.15 or higher. In practice a first offense in Collin County more often ends in a dismissal, a reduction, deferred adjudication where you qualify, or probation, and the jail exposure is what the defense is built to remove. The time you already spent in the Collin County Detention Facility after the arrest counts against any sentence.

    I was just arrested for DWI in McKinney. What should I do first?

    Call us before you do anything else, because two clocks are already running. The 15-day window to request an ALR hearing starts when you receive the notice of suspension, and your bond conditions take effect the moment you are released. Write down everything you remember about the stop while it is fresh, keep the paperwork you were handed, and do not discuss the case with anyone but your lawyer. The consultation is free.

    Your Defense Starts Now

    Charged with DWI in McKinney?

    The county works its cases hard. So do we. Free, confidential case review. An attorney answers, 24/7.

    Our Allen Office
    1333 W. McDermott Drive, Suite 180
    Allen, TX 75013
    Get directions
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