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"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
As Seen On
Denton County Criminal Courts Guide
By Attorney Deandra Grant
If you’re facing a criminal charge in Denton 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 NowArgyle DWI and Criminal Defense Lawyers
Argyle is a rapidly growing community in southern Denton County, situated along FM 407 between I-35W and I-35E. What was recently a rural crossroads is now a booming residential corridor with new developments, growing commercial areas, and increasing law enforcement presence. The Argyle Police Department and Denton County Sheriff’s Office handle enforcement in the area. Every criminal and DWI case arising from Argyle is prosecuted by the Denton County District Attorney’s office and heard at the Denton County Courts Building.
Deandra Grant Law’s Denton office is at 1317 E McKinney Street, Suite 101A which is directly across the street from the Denton County Courts Building at 1450 E McKinney Street, where Argyle cases are heard.
Managing Partner Deandra Grant holds a Master’s Degree in Pharmaceutical Science, a Graduate Certificate in Forensic Toxicology, and the ACS-CHAL Forensic Lawyer-Scientist designation. Partner Douglas Huff holds the same ACS-CHAL designation and has completed advanced digital forensics training. For federal matters in the Eastern District of Texas, Of Counsel James Lee Bright brings more than 25 years of federal trial experience.
Why the Science Behind Your Case Matters
Most defense attorneys challenge DWI and criminal evidence through legal argument. Deandra Grant Law challenges it through the science.
- Blood testing: DPS Garland lab for alcohol cases. GC-FID methodology, in vitro fermentation, sodium fluoride adequacy, chain of custody, analyst qualifications
- Drug cases: DPS Austin lab, Armstrong Forensic Laboratory, or NMS for drug analysis. Presence is not impairment. Pharmacokinetic analysis is how drug impairment evidence is properly challenged.
- Breath testing: Intoxilyzer 9000. Partition ratio variability (1,100:1 to 3,400:1), 15-minute observation period compliance, calibration records, mouth alcohol, GERD/diabetes effects.
- Field sobriety tests: Deandra Grant is a trained SFST instructor who administers and grades the ACS-CHAL Forensic Lawyer-Scientist and DUIDLA Board Certification exams. SFST cross-examination goes to the protocol, not just the result.
- Digital evidence: Cell phone data, social media, CDR records, metadata challenged through Doug Huff’s digital forensics training.
- Retrograde extrapolation: Rising BAC defense, Widmark formula, individual elimination rate variability
Argyle and Southern Denton County Courts and Enforcement
Courthouse: Denton County Courts Building, 1450 E McKinney St, Denton, TX 76209. Misdemeanor cases are heard in the County Criminal Courts. Felony cases go to the district courts. Our Denton office is directly across the street.
Federal cases: Argyle and Denton County are in the Eastern District of Texas. Attorney James Lee Bright handles federal defense in the Eastern District.
Enforcement Agencies Serving Argyle
- Argyle Police Department: (940) 464-7254
- Denton County Sheriff’s Office: (940) 349-1600
- Texas DPS Troopers (I-35W, I-35E, FM 407, US 377)
- Enforcement active along FM 407, US 377, FM 1171, and the connecting roads between the I-35W and I-35E corridors
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DWI Penalties in Texas
- First offense (Class B): Up to 180 days jail, fine up to $2,000, license suspension up to 1 year.
- BAC 0.15+ (Class A): Up to 1 year jail, fine up to $4,000, mandatory ignition interlock.
- Second offense (Class A): 72-hour minimum jail as COP, up to 1 year, fine up to $4,000, mandatory interlock.
- Third offense (felony): 2–10 years prison, fine up to $10,000, 10-day minimum jail as COP.
- DWI with child passenger: State jail felony, 180 days–2 years, fine up to $10,000.
- Intoxication manslaughter: Second-degree felony, 2–20 years. Bentley’s Law child support restitution applies if victim was a parent of minor children.
Criminal Defense in Denton County
Every criminal defense in Denton County begins with Texas Code of Criminal Procedure Article 38.23 which is the exclusionary rule with no good faith exception. An unlawful stop, a defective warrant, a search beyond its scope: any of these can suppress the evidence driving the prosecution’s case. In Argyle, where enforcement along FM 407 and the I-35 corridors produces significant traffic stop activity, the stop analysis is often the most important question in the defense.
We handle the full range of criminal charges arising from Argyle and Denton County:
- Assault and family violence — including the permanent consequences of the family violence affirmative finding
- Drug possession and delivery — DPS Garland / DPS Austin / Armstrong / NMS lab analysis challenged at the chemistry level
- Theft, robbery, fraud, and white-collar offenses
- Gun crimes — UCW, felon in possession, federal firearms charges
- Sex offenses — forensic evidence and digital evidence
- Murder and homicide — through capital murder
- Federal criminal defense — Eastern District of Texas, handled by James Lee Bright
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Criminal Defense in Denton County
Every criminal defense in Denton County begins with Texas Code of Criminal Procedure Article 38.23 which is the exclusionary rule with no good faith exception. An unlawful stop, a defective warrant, a search beyond its scope: any of these suppresses the evidence driving the prosecution’s case.
We handle the full range of criminal charges arising from Lewisville and Denton County:
- Assault and family violence — including the permanent consequences of the family violence affirmative finding
- Drug possession and delivery — lab analysis challenged at the chemistry level
- Theft, robbery, fraud, and white-collar offenses
- Gun crimes — UCW, felon in possession, federal firearms charges
- Sex offenses — forensic evidence and digital evidence examined independently
- Murder and homicide — through capital murder
- Federal criminal defense — handled by James Lee Bright
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Why Choose Deandra Grant Law in Argyle
- Denton office directly across from the courthouse. 1317 E McKinney St, Suite 101A.
- 30+ years in Denton County courts. 500+ trials to verdict statewide.
- ACS-CHAL Forensic Lawyer-Scientist — both Deandra Grant and Douglas Huff.
- Master’s Degree in Pharmaceutical Science + Graduate Certificate in Forensic Toxicology. Science-based challenges to blood, breath, and drug evidence.
- Trained SFST Instructor.
- 17 published law books. Including The Texas DWI Manual.
- Digital forensics training.
- Texas Super Lawyer since 2011. AV® Preeminent rated by Martindale-Hubbell®.
- Federal defense. James Lee Bright — Eastern District of Texas.
If you have been arrested for DWI or are facing criminal charges in Argyle or anywhere in Denton County, call (214) 225-7117 for a free, confidential consultation. Or schedule online at texasdwisite.com. The 15-day ALR deadline may already be running.
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.”