Billy McNabb, Attorney At Law
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Billy McNabb practices in San Marcos, Texas and has been defending and protecting the rights of citizens accused of crimes since 1995. We have successfully defended thousands of citizens accused of crimes. We have a proven track record of winning trials, making the best of a bad situation, expunging criminal records, and prevailing on appeal.

Due to the consequences of a DWI conviction, we firmly believe that each DWI case should be aggressively defended. Mr. McNabb holds two certifications in gas chromatography from a premiere laboratory training facility. The facility in which Mr. McNabb received his training and certifications trains some of the top governmental agencies, including the FBI, DEA, and CDC.
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We have successfully defended thousands of citizens accused of crimes. We have a proven track record of winning trials, making the best of a bad situation, expunging criminal records, and prevailing on appeal. If you have been arrested, you are presumed innocent unless the State can prove the case against you beyond a reasonable doubt.
Driving under the influence is the crime or offense of driving, operating, or being in control of a motor vehicle while impaired by alcohol or other drugs, to a level that renders the driver incapable of operating a motor vehicle safely. Due to the consequences of a DWI conviction, we firmly believe that each DWI case should be aggressively defended.
An Expunction is a civil suit that is necessary to rid your criminal record of information related to an arrest. If an expunction is granted, under current law you may legally deny the occurrence of the arrest, except when questioned under oath in a criminal proceeding about an arrest for which the records have been expunged.
Reviews (8)
Timothy Johnson
Timothy Johnson
Jan 28, 2021
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This law firm is great. Billy answered my calls right away and gave me great guidance. Amie, did an outstanding job working with me step by step to make sure thwt everything was handled accordingly. They both went out of their way to make sure my needs were taken care of. I could not have asked for a better law office. I highly recommend them to anyone. Great job and thank you so much for everything.
Jonathan Phillips
Jonathan Phillips
Dec 11, 2020
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Positive: Professionalism, Quality, Responsiveness, Value
Amy was amazing and always there too answer any questions I had in a timely manner and helped me out in anyway she could. Billy was extremely thorough and mindful of my case And walked me through all the info I needed to know about the case in an efficient manner. Overall great experience with billy as my attorney.
Jamie Evans
Jamie Evans
Nov 21, 2018
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He is a awesome attorney. If you have a DWI he is the guy you need. !!! Very informed, and does his homework on your case. Amy is always helpful and patient . And always returns your calls and emails quickly. They have a awesome office. I highly recommend them.
Jamie E.
Jackie Griffith
Jackie Griffith
Aug 21, 2018
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Billy McNabb is a great lawyer. He was honest from the beginning on what he could do and exceeded expectations. I was constantly updated on the case and always quick response to any questions I had.
L. M.
L. M.
May 31, 2018
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Billy and his assistant, Amy, are amazing at what they do. Amy responds to emails super promptly including nights and weekends which helped immensely in calming my nerves and strengthening my confidence in them leading up to my trial. Most importantly, Billy helped to clear me on all 3 of my charges related to my DWI. First, I was in danger of losing my license for 6 month, but I did not. Second, I was charged with striking an object (a bush), which Billy was able to get completely dropped immediately. Third, and most importantly, Billy did an outstanding job defending me during my jury trial,
Betsy Benner
Betsy Benner
Sep 24, 2017
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Billy McNabb is the best attorney!!! He is without a doubt the most amazing attorney! Amy that is in his office is so professional...caring...and wonderful!! Wouldn't consider anyone else.
Blake Endicott
Blake Endicott
Jun 22, 2017
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I've had to use Billy and Amy on multiple occasions. Amy is extremely professional and way more organized than I will ever be! I would have been lost without her. Billy knows his stuff hands down. I will never use any other attorney.
Aaron Jacobson
Aaron Jacobson
Jun 20, 2017
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Billy saved me. I can’t speak highly enough about his proffesilnalism and results... I made the mistake of hiring one of these downtown chop shop lawyers at first. They kept telling me to settle and take these horrible plea deals. I fired them, broke my contract and hired Billy. He stepped in and coached me through the entire process. He got me the best possible outcome per the circumstances. I can’t believe what an amazing job he did. Not only that but he saved me a ton of time. I would highly recommend Billy McNabb and his entire team.