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Diane Marie Hartog

Family Attorney at Rancho Cucamonga, CA

4.5   8 reviews
  • Licensed for 26 years
    State CA
    Acquired 1997
    Active No misconduct found

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

About Diane

Learn Diane’s areas of practice.

Practice areas
  1. Adoption

    28 years

  2. Child support

    28 years

  3. Divorce and separation

    28 years

  4. Family
    Umbrella term pertaining to divorces, legal separations, custody and visitation, support, division of assets, etc.

    28 years, 1,000 cases

  5. Wills and living wills

    28 years

We have provided exceptional service to our clients since 2000. Diane M. Hartog has provided services in traditional litigation and the collaborative approach to divorce and family law matters.  Ms. Hartog has been practicing law in San Bernardino County for 20 years, and has one of the best reputations in Southern California.  


Ms. Hartog is knowledgeable and friendly and strives to provide superb legal services to her clientele.  


Located in Rancho Cucamonga, attorney Hartog appears in court in San Bernardino Central, Victorville, Riverside, Hemet, Pomona and other courts in Los Angeles County.

Photos and videos


Law Offices of Diane M Hartog
10621 Church St Ste 130
Rancho Cucamonga, CA, 91730

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4.5 / 5.0
  8 customer reviews
5 Star
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1 Star
Posted by anonymous | April 13, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Highly Recommended
Diane has been my attorney for many years. I have been in an ongoing and intense custody case, brought on by my ex, for many years. Diane has always been honest and upfront about all of the possible outcomes when it pertains to my case and is a forceful, and knowledgeable, presence when dealing with my ex, his attorney, and in the courtroom. I feel very fortunate to have Diane by my side when it comes to my legal issues, even after many years. The legal system has always favored on my side, thanks to Diane.
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Posted by Happy man | March 6, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Caring and compassionate and such a great team!
I feel comfortable with Diane's office after consulted with other attorneys. I got her contact through friend, friend and someone that lost case to Diane's office. Diane and her team were sensitive to my need and emotion. Answered questions that may have seemed petty with respect and dignity. They working tirelessly to ensure the best possible outcome on my behalf, and I can't thank you enough to Diane, Sara and Annie. I recommend to anyone. God Bless You Ladies
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Posted by Kari | February 26, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Love her!
Not only is Diane compationante and understanding, she truly has your best interests in mind when you are her client. Diane has represented me on 2 separate occasions now. Divorce with custody and then an emergency Custody hearing. She has become not only my attorney but also a friend I proudly call family. I have referred more clients then I can count to her! Love her!
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Posted by Cassie | September 12, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Highly Recommended
Diane has been my divorce Attorney throughout my complicated dirvorce with my deadbeat husband and dad. She has been there for me to listen and guide me and my children during this emotional time. Her knowledge, personality, and fight are the reason the judge has ruled in our favor after every court hearing so far. I am very pleased with the service she has provided me and my children. Diane and her staff have been welcoming and responsive to my calls, emails, and questions in a positive and supportive manner. Thank you so much for helping me comtinue to get thru such a difficult time in my life. I fully trust that we will continue to have judgements in my favor and I am glad you are in my corner. I would highly recommend Diane and her office to anyone in the midst of a divorce.
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Posted by Cory | December 24, 2014
child custody
This lady is a true gem. She did wonders for me. As long as your realistic and are on the same page as to what's best for the kids and not for your selfish reasons she will deliver a wonderful outcome. I cannot say how pleased I was with her services and had a wonderful staff. Thank you Diane keep up the good work.
Posted by Gregg Riddle | March 31, 2013
Very knowledgeable attorney!
She was the greatest! I would hire her in a minute if I had a need for an attorney. She assured us as to what she could and would do and she did it!
Posted by anonymous | November 16, 2012
I'd re-hire her in a heartbeat.
I hired Ms. Hartog to represent me in my divorce. I can honestly say that it is a shame she does not practice more areas of the law because I would prefer to have her team handle all of my affairs. She is fair and honest, and her fees are very reasonable. I have felt very comfortable with her and with her staff as they have all gone above and beyond to handle my case with care. After having read the last two reviews, I can hardly believe they were talking about the same attorney, as this was exactly the opposite experience I had when represented by Ms. Hartog. I make it a point to refer all of my friends, family and acquaintances to her if they happen to need a lawyer who handles family law. And the feedback I get from them is the same satisfaction that I have had in dealing with her firm.
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Posted by anonymous | May 29, 2016
This review is from a person who hired this attorney.
| Hired Attorney
She starts off great but once you get to know her run
When I first met Diane I felt very good about her taking my case and getting it cleaned up. But in the long run she only got me supervised visits thousands of dollars later. I could have done that myself for free. She cares only about money and if you are late with a very small bill be prepared because she will ask you to sign a release. Don't bother giving her good information to use for your case either because she will not use it for the judge to see. I had one job for her and that was to make sure my girls were safe from there abusive father. Now she asked me to release her and didn't even notify me I had a court date and will not give me my file to prepare for my court date on my own.
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Response from Diane Hartog June 2, 2016
The file was ready within the week and has since been picked up. It is unfortunate that this negative review is a result of the client not honoring their contract. This client told me in no uncertain terms that they would be leaving a negative review as soon as they figured out how. The way this review is written makes it appear as though this client is on monitored and supervised visitation; which is not the case. This client was put in a position of strength, a position they are still in. As is typical with many clients who fail to honor their contract and are reminded of their obligation, the complaints about “nothing being done” are tossed around. I do care about the children and I wish this client all the best.
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  • Hourly Rates $ 400-400 per hour
Payment methods
Cash, Check, Credit Card


AVVO RATING 8.6 (Excellent)

Work Experience

  • Owner
  • Law Offices of Diane M. Hartog
  • 2000 - Present


  • California Southern Law School
  • JD - Juris Doctor
  • 1996
  • California Southern Law School
  • BS - Bachelor of Science
  • 1995
  • California State University, Fullerton
  • BA - Bachelor of Arts
  • 1983


  • Western San Bernardino County Bar Association
  • Immediate past president, Board of Director
  • 2010 - Present
  • East West Family Law Council
  • Board of Director
  • 2006 - Present

Languages Spoken

  • Spanish
  • English

Attorney endorsements

Received (1)
Given (0)
Endorse Diane
Family Attorney | May 05
Relationship: Worked together on matter
"Diane is a consummate professional. She is phenomenal and is always a challenging and respectful opposing counsel. She understands family law courts and how to manage a case with opposing counsel."
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Rancho Cucamonga Family Lawyer Diane Marie Hartog
Diane Marie Hartog
Family Attorney
Rancho Cucamonga, CA
Licensed for 26 years