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William Mark Jacob

Family Attorney at Richardson, TX

3.7   9 reviews
  • Licensed for 19 years
    State TX
    Acquired 2005
    Eligible to Practice in Texas No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About William

Learn William’s areas of practice.

I am dedicated, honest and take a genuine interest in my clients and my work. I do not shy away from high conflict cases.  I will aggressively litigate a matter if that is what is in the client's best interest.  On the other hand, I am always ready to find creative ways to meet my client's goals through dispute resolution.  I believe one of my best attributes is my personable attitude.   Through the years of practice I have found that my attitude coupled with successful results make a winning combination. 


Law Office of William M. Jacob, PLLC
100 N Central Expy Ste 330
Richardson, TX, 75080-5310

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3.7 / 5.0
  9 customer reviews
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Posted by Teresa | August 31, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Less than year ago I hired William and based on my experience William has always been professional and knowledgeable. My son was facing major charges and with William's knowledge and expertise, my son is no longer facing any further legal actions. I still utilize his services for any legal issues. I have referred him to family members and friends. I now use him as my family attorney. He still continues to provide excellent service and continues to be professional. He is always attentive, hands on and timely. I can't say one bad thing about him as he has always been available no matter the time or day/night. Each time I have reached out to William he has always responded to my needs to include him being at the hospital visiting his mother, out to dinner with his family and out shopping during the holiday season. William is an excellent attorney and I highly recommend utilizing his services.
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Posted by Jason | August 31, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Fantastic Lawyer
I went through 3 lawyers prior finding William Jacob Law Office. Family/custody battles can be brutal...but knowing first hand experience how bad lawyers can be and how messed up our court system is...William is truly one of the few good ones. He was prompt to every meeting/hearing/appointment. He listened to every word I said. He cared. He was personable, light hearted and extremely generous...he should be charging more for as good as he is. He has very helpful personal insight to many of the "legal people" you will be at the mercy to in our system. I have known William for going on 8 years now...and can honestly say that if you are looking for a family lawyer...and i'm not sure what all Law he practices...but he is your guy.
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Posted by Tonja | April 15, 2015
Reliable, Honest, Knowledgeable and Hard Working
I hired Mr. Jacob as my divorcee attorney and he did an outstanding job. First Mr. Jacob listened to every word I said and always got an understanding. I never once had to wonder or worry about what was going on. He was very thoroughly and explain every documented sheet of paper to me. He was very patient, professional and accepted my phone calls and always responded in a timely manner. During my divorce I had a lot of questions and he never once grew tired of me asking even the same question twice. He is very affordable and even during court with my x-husband he was very professional and courteous. As I reflect back over my divorce case, and if I had to do it again I would not hesitate to hire Mr. Jacob to represent me. Going to court can be a frightening experience but Mr. Jacob made sure I felt comfortable before going and always addressed my questions. Because of Mr. Jacob I not only received child support, medical support but spousal support which is not usually awarded in the state of Texas. I highly recommend William Jacob to anyone going through a divorce.
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Posted by Arecelia | April 8, 2015
honest hard working attorney!!!
I hired William in the year of 2010 , when my boys father had taken custody of my children. Mr. Jacobs fought long and hard to help me win my case! He told me he was going to help me get my kids back he did and he did everything in his power to win my case. This past year Mr. Jacobs helped me win sole custody of my boys. He is the most genuine person we have ever met, I highly recommend anyone to William Jacob! He's a hard working man. If I ever get into a situation again I will definitely to go to Mr Jacobs again!
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Posted by Yogeswary | December 17, 2014
Divorce w children
Mr. Jacobs was very helpful and work closely with me, assisting me and advising me every step of the way. I could rely in him , I also followed his advice on visitations and paperwork. This helped me to have a much positive outcome on my case. I would definitely recommend him.
Posted by Armando | August 18, 2014
Great lawyer
I hired Mr. Jacobs 05 / 14. I live in Colorado and needed a lawyer quickly. I read his review and didn't think that was correct so I made some calls to find out about Mr. Jacobs luckily I found out that he was reasonable priced and very knowledgeable in Family law that.. I ended up hiring him the next day.. the night before my hearing Mr. Jacob called my hotel room and we discussed the case and got ready for the case after 2 hrs we ended the call and the next day won the case within a few min.. I have had lawyers for the past 11 years and never had a lawyer take the time to get to know the case or me like Mr. Jacob has. Its almost three months later and Mr. Jacob still calls to see how I am doing. So if you are looking for a great lawyer, a lawyer that is on point and gives his all into your case Mr. Jacob is the lawyer for you.
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Posted by anonymous | February 17, 2017
This review is from a person who hired this attorney.
| Hired Attorney
I hired William the summer of 2016 and my case is still not completed to my satisfaction. He is so slow and inattentive, that even the judge was shocked at how long it took him to get my case presented. I recommend you find another attorney!
Posted by anonymous | April 13, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Donot waste your time
I was a client of Mr Jacob and I normally do not write reviews but I donot want anyone to fall for the same thing. This guy never shows up on time, he is never prepared. He messed my entire case up. He is expensive. Always wants more money and nearly returns calls. Please spare yourself the pain and go with a more honest attorney.
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Posted by anonymous | February 17, 2016
This review is from a person who hired this attorney.
| Hired Attorney
William is a horrible family law attorney. He gave me advice that made my situation much worse and did not even show up to 2 of my court hearings so I was left by myself. He is a liar, and all talk. He wasted my time and money, and didn't even know how to argue the facts. He is a loser, not a winner. Hire another attorney regarding family law. Not William because he will say whatever to get your money, but shows NO action.
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Contact for Details


AVVO RATING 7.7 (Very Good)


  • DePaul University College of Law
  • Doctor of Jurisprudence/Juris Doctor (J.D.)
  • 2001
  • Dba Civil Trial Academy
  • N/A
  • The University of Texas Southwestern Medical Center At Dallas
  • Bachelor of Science
  • N/A

Languages Spoken

  • Hindi
  • Urdu

Attorney endorsements

Received (5)
Given (5)
Endorse William
Family Attorney | Jul 03
Relationship: Worked together on matter
"Mr. Jacob is professional, efficient, and knowledgeable. We have worked together on multiple matters, generally protecting the rights of parents who need to protect their child in custody litigation. He builds a great rapport with clients, judges, and other attorneys. Highly endorse his family law experience and skills."
Family Attorney | Dec 09
Relationship: Fellow lawyer in community
"I endorse this lawyer. William is a honest hardworking lawyer who strongly advocates for his clients. He is compassionate and any one who has William as their attorney is in good hands."
Family Attorney | May 20
Relationship: Worked together on matter
"I endorse this lawyer. I have worked with Mr. Jacob as co-counsel on some cases. His experience in family law is extensive. His demeanor is always postive toward his clients. When at trial he is very focused and attentive to the details."
Family Attorney | Dec 18
Relationship: Fellow lawyer in community
"I have referred several clients to William Jacob for Family Law cases. He is extremely knowledgeable and attentive to detail. I strongly recommend him."
Family Attorney | Dec 16
Relationship: Opposing Counsel on matter
"I highly endorse William Jacob. We have had a case opposite each other, and he worked hard to resolve tough issues. William is a great negotiator who puts his client’s interests first."

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Richardson Family Lawyer William Mark Jacob
William Mark Jacob
Family Attorney
Richardson, TX
Licensed for 19 years