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Mark L. Gantz

Probate Attorney at Dearborn Heights, MI

5.0   35 reviews
  • Licensed for 52 years
    State MI
    Acquired 1971
    Active in Good Standing No misconduct found

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

About Mark

Learn Mark’s areas of practice.

Practice areas
  1. Probate
    Handling of Probate Estates, Conservatorships and Guardianships; Preparation of Wills, Health Care Powers of Attorney and General Durable Powers of Attorney

    53 years

  2. Divorce and separation
    Representation of both women and men in contested and uncontested proceedings.

    53 years

  3. Real estate
    Residential and Commercial Real Estate Transactions; Sale and Purchase of Real Estate; Purchase Agreements; Preparation of Deeds and Lady Bird Deeds

    53 years

I have been rated "AV Preeminent" (Highest Rating) by the Martindale Hubbell Law Directory, and included in the 2011 and the 2012 Super Lawyers List of Top Lawyers in Michigan in addition to "dbusiness" Magazine 2010 list of Top Lawyers.  has awarded me its best rating of "Superb" 10.0 out of 10.0.  I am an experienced, competent and sincere lawyer, who would like to represent you. I am a partner in a small, conveniently located, Detroit area lawfirm. Please visit our firm's website: .

Please don't hesitate to call or email me with any questions or concerns. I am avaiable for telephone, Skype, Face Time, and Zoom consultations, which avoid the need for in-person meetings. I wish you all good health, and please stay safe!

At our law firm we share the concerns of every individual, family and small business as we all face this unprecedented time in our lives. We echo the reassurance of health care experts, that we can all get through this together. We reaffirm our commitment to continue addressing the legal concerns of existing and new clients as concientiously and resolutely as always.

Photos and videos

Our Conference Room
This is me (Be assured that my head is not cut off when you see me in person!)
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Mark L. Gantz
8283 N. Telegraph Rd
Dearborn Heights, MI, 48127

Probate lawyers nearby


5.0 / 5.0
  35 customer reviews
5 Star
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1 Star
Posted by Mary Lynn | October 25, 2022
This review is from a person who hired this attorney.
| Hired Attorney
Mark was the appointed attorney in an estate that I was involved with. Great experience, timely communication, professional in our interactions.
Posted by Kurt | August 17, 2022
This review is from a person who hired this attorney.
| Hired Attorney
So Very Helpful
Mark was very helpful acquiring my conservatorship and guardianship for a close acquaintance. He handled every detail of the process and kept me fully informed every step of the way. His personable style made navigating the probate system easy for me and I am so grateful for his guidance during a very stressful time. I would highly recommend Mark for any probate issue or consultation!
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Posted by Barbara | October 28, 2021
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
Even though Mr Gantz could not help me with my situation, he took the time to speak with me, answer some of my questions and offer suggestions. That is truly appreciated.......Thank you.!
Posted by Ken | June 11, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Business Closing
Mark has been our attorney for many years. He has handled all of our leases for commercial properties. We have been in business for 44 years and finally decided to sell. Mark advised us on our sale and took care of all the paperwork and was there with us at the closing and professionally handled the entire closing. I would use Mark for any legal matters in the future.
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Posted by Cathy | June 10, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Highly Recommended
Mark helped me settle the estate of my aunt, who passed during the pandemic. She lived alone, was never married, and had no children, so my five siblings and I were her only heirs. The pandemic along with the absence of a will added complexity to an already difficult situation. Mark helped me to settle the estate, all the while working virtually with the courts due to the pandemic. From selling a home and a vehicle, to handling all of the creditors, to filing taxes, to managing and communicating with my family regarding the status of the estate, and through to the final certificate of completion, Mark was always a very knowledgeable, steady, and caring helping hand. He guided me through the process without fail and always suggested how to proceed with the lowest fees. This was my first time going through such a process and Mark made it all doable. I simply could not have done it without him! I highly recommend Mark Gantz as someone who will sincerely advocate for you and your best interests.
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Posted by Mary | February 3, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Estate attorney for complex cases
Mark was referred to us by another estate attorney who could not handle the complexities of my father's estate. My father was a hoarder with an invalid will, assets in two countries that were difficult to find and a US estate with only Canadian beneficiaries (with one beneficiary threatening to sue the estate throughout the process)! A global pandemic with closed courts and the inability for the personal representatives to enter the US was just the added spice! Mark handled all of this with solid advice on how to settle the estate with the least amount of fees for us. He even got the litigious sister on board! - signed one grateful Canadian.
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Posted by Joe | January 14, 2021
This review is from a person who hired this attorney.
| Hired Attorney
There's no one better Lawyer
Mark Gantz has been our attorney for several years. To begin he is just an overall super person. Mark is gracious and respectful. He is a genuine man with great communication skills. Mark's knowledge of the law will put your mind at ease. He helped us out after a death in our family, a situation that brings out a lot of emotions. He was supportive and guided us through the legal steps of estate and trust issues that we were nervous about. Mark listened to our concerns and understood our needs. He also helped us prepare personal documents so we could feel secure knowing we have all our matters in order. He is a good guy to have on your side.
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Posted by Mark | January 7, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Mark Gantz - Highly Recommended
I have known Mark Gantz for the past 43 years on both a personal and professional level. I have always found him to be honest, trustworthy and ethical; a person with high integrity. I have retained Mark for the sale of my personal residences, and for estate planning and execution of an estate after the passing of my mother-in-Law. In my professional life I referred many of my clients to Mark for business transactions. In all cases I would receive positive feedback from my clients. I would highly recommend Mark to anyone looking for legal assistance.
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Posted by Delia Jane | January 6, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Mr. Gantz represent me 25 years ago in a divorce and real estate transactions. Mr. Gantz and his firm are the most professional people I have had the pleasure to deal with. Mr. Gantz was the attorney who represented me recently in a divorce case. I will be using his firm this month for some other legal issues. Mark is so knowledgeable and up to date on everything. Also, any advise he gave me was absolutely right on target. Mark helped the bad circumstances I found myself in bearable. The experience, knowledge, kindness and concern for his clients makes him the best in my opinion.
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Posted by Michael | January 6, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Mark Gantz ..highly recommended!
Mark was my Father's attorney for many years (and friend) and so when I first needed an attorney, Mark was the easy choice to turn to. Over the past 20 + years Mark has handled a Divorce and numerous real estate transactions for me, all with the utmost Professionalism and efficiency. It's a comfort to me knowing I have him to represent me in legal matters.
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Posted by Harry | January 6, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Review for Mark Gantz
I have known Mark for many years. He has handled everything for me from my divorce to my will. Because I am in the mortgage field I have referred many clients to him regarding their real estate needs and he has always done a great job. I would highly recommend him without hesitation.
Posted by Randal | December 14, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Real Estate Attorney
I have used and consulted with Mark on several occasions as it relates to my real estate practice and rental properties. Mark is the rare professional who takes the time to explain the process in simple layman's terms and delivers on his commitments. I have referred several of clients to him over the years - all have thanked me for passing along his name.
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Posted by Robert | June 21, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Experienced Professional
Mark Gantz handled my divorce case in 2018, and I feel that he did an excellent job representing me. He knows the law and has lots of experience with divorce cases. He is very personable and spent lots of time (off the clock) talking with me. After my divorce was finalized, Mark prepared my will. Easy to talk to, very prompt with returning calls, fair, honest attorney.
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Posted by Andrea | September 6, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Look no further!
My first contact with attorney Gantz was on behalf of a lifelong friend who was troubled, for whom he was the family attorney. He helped tremendously in my efforts to help his client, and couldn't have been kinder in aiding in navigating the unique circumstances. He is a consummate professional, so much so, that my husband and I have had him do routine POA work for us. He goes above and beyond, returns calls timely, and his manner with clients is warm, friendly, and a credit to his profession when it is often viewed as cold and/or uncaring. The staff at his practice is equally kind and efficient, and a pleasure with which to work. Mark is gifted at his work, and is honest, plain-spoken, and goes the extra mile. Took me too long to post my review, but it is honest and heartfelt. You can't do better, in my humble opinion, if you need an excellent Mr. Gantz with confidence. He's extraordinarily knowledgeable, accessible and patient, as are those employed at the practice.
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Posted by anonymous | August 28, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Very Professional!
Mark Gantz, Attorney at Law, quickly and efficiently prepared some legal documents I needed for my family. He was easy to communicate with, went right to work, and in a few days, mission accomplished. Highly recommended!!
Posted by Teri Derkacz | May 24, 2017
This review is from a person who hired this attorney.
| Hired Attorney
A Great Guide
Mark represented me in my divorce in 2013. He was the voice of reason during an emotional time. He provided guidance to spare time and cost. He offered suggestions that eventually led to a mediated settlement. His empathy and professionalism were greatly appreciated. I recommended Mark to a friend and she was as pleased with his representation.
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Posted by Kristin Ramold | May 23, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Mr. Gantz is extremely professional, friendly and thorough. He explained the divorce process in detail and I ended up with a fair settlement because of his years of experience. He was prompt in all communications and very reasonably priced. I would highly recommend his services.
Posted by Mike | May 23, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Mark Gantz was my lawyer for a divorce. He was outstanding from every legal & ethical treatment possible!!!
I hired Mark Gantz to be my lawyer for my divorce case, during our first meeting. He was professional every step of the way! He also was kind in his treatment of me, as I was emotional about losing my wife. Without Mark it would have been unimaginable!!
Posted by Keith Robbins | March 13, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Highly Recommend
Mr. Gantz handled my divorce case. Thoroughly professional, but excellent, friendly and easy to work with. He provided a detailed explanation of the process, advised me of the possible complications, gave me some wise counseling and was always open to answering my questions. For anyone considering engaging an attorney, I would highly recommend Mark.
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Posted by Marty Leach | February 8, 2017
This review is from a potential client who consulted with this attorney.
| Consulted Attorney
Wish I would have found him first.
Mr. Gantz was very helpful in a consultation that lasted more than an hour. His knowledge is easily seen. I really appreciated his help and information regarding my case.
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  • Free Consultation 60 minutes
  • Hourly Rates $ 250-300 per hour
Payment methods
Cash, Check, Credit Card


AVVO RATING 9.5 (Superb)

Work Experience

  • Attorney/Partner
  • Hurwitz & Gantz, P.C.
  • 1988 - Present
  • Adjunct Professor
  • Oakland University, Rochester, MI
  • 1975 - Present
  • Assistant to National Partner
  • Hyatt Legal Services
  • 1986 - 1988
  • Attorney/Partner
  • Rogers & Gantz, P.C. and predecessor firms
  • 1974 - 1986
  • Associate Attorney
  • Gottlieb & Goren, P.C.
  • 1971 - 1974
View all work experience


  • Wayne State University Law School
  • JD - Juris Doctor
  • 1971
  • Wayne State University
  • BA - Bachelor of Arts
  • 1968

Sample of Legal Cases

  • Estate of Hugh A. Miller, Decedent
  • Over $1,000,000 turned over to charities!


  • Michigan Attorney Grievance Commission
  • Arbitrator/Special Investigator
  • 1980 - Present
  • Barristers B'nai B'rith Bar Association
  • Financial Secretary/Treasurer
  • 1975 - 2015
  • Family Law Section, State Bar of Michigan
  • Ethics Committee 1972-1975
  • 1972 - 1975

Languages Spoken

  • English

Honors and Awards

  • "AV Preeminent" Peer Review Rating
  • Martindale-Hubbell Law Directory
  • 2018
  • 2018 Top Lawyers in Michigan
  • The Legal Network
  • 2018
  • Top Attorneys in Michigan
  • The New York Times
  • 2012
  • 2011 Five Star Wealth Manager
  • HOUR Detroit Magazine
  • 2011
  • 2011 Top Attorneys in Michigan
  • Super Lawyers Magazine
  • 2011
  • 2010 List of Top Lawyers
  • "dbusiness" Magazine
  • 2009
View all awards


  • Legal Research and Writing I (Course Pack)
  • An Overview of The Michigan Uniform System of Citations
  • 2009

Speaking Engagements

  • Quality of Life Senior Sessions
  • Estate Planning for Real Estate
  • 2014
  • Paralegal Conference
  • Legal Writing
  • 2004

Attorney endorsements

Received (8)
Given (6)
Endorse Mark
Divorce and separation Attorney | Aug 01
Relationship: Fellow lawyer in community
"I endorse this lawyer and refer clients seeking a family law attorney in Wayne County to him because of his intelligence, integrity and philosophy to simply "get the job done"."
Unknown Attorney | Oct 16
Relationship: Family member
"I endorse this lawyer."
Probate Attorney | Jul 22
Relationship: Fellow lawyer in community
"I endorse this lawyer's work. Mark Gantz is an excellent attorney. He is very knowlegable and a great person!"
Divorce and separation Attorney | Jul 07
Relationship: Worked together on matter
"I endorse this lawyer's work. Well experienced, well prepared, and relates well with clients and adversaries."
Probate Attorney | Jul 06
Relationship: Co-worker
"I endorse this lawyer's work. Mark Gantz is proficient in many area of law, including: probate, real estate and divorce. He works toward realizing a positive and timely result for his clients. He is organized and focused. Clients appreciate that he is available to them for support and guidance. His knowledge of law is extensive. Mark is a great person and lawyer."
Probate Attorney | Feb 09
Relationship: Other
"I endorse this lawyer's work. Mark is knowledgeable, efficient, and a good lawyer. He gets results for his clients, and they enjoy working with him."
Probate Attorney | Jan 27
Relationship: Opposing Counsel on matter
"I have worked opposite him on numerous matters and found mister Gantz to be knowledgeable. thoroughly professional, and legally very well informed. He advocates vigorously for his client, yet does not alienate the opposing party. Any client for whom he provides services will be well represented."
Estate planning Attorney | Jan 22
Relationship: Worked together on matter
"I endorse this lawyer's work. Mark Gantz is an excellent attorney that helped a mutual client with a complicated matter during a difficult time."
View more endorsements
Criminal defense
Divorce and separation
Personal injury