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Mortensen & Reinheimer, PC Mortensen & Reinheimer, PC
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About Us

Serving All of Orange County!

MORTENSEN & REINHEIMER, PC is an established law corporation in Orange County. We know that some of the most important objectives in a lifetime are protecting what you have earned, and planning to provide for your loved ones. Our primary goal is to ensure that whatever step you are working towards or whichever phase of life you are in, we can help accurately reflect your desires in the legal perspective of it. Whether it is creating your estate plan or handling the affairs of a loved one you lost, our attorneys will work with you on a continual basis in order to effectively meet your needs.


Mortensen & Reinheimer, PC offers unparalleled service and is dedicated to providing each of our clients with the personal attention they need to successfully handle their legal matters. We are always available to answer your questions. Our attorneys will readily meet with you to discuss the various legal situations you encounter, such as changes to your estate plan. At Mortensen & Reinheimer, PC, we build long-term relationships with each of our clients, striving to maintain their personal investments in the security and well-being of their families.

    “They were very patient and explained every step along the way.”

    Tamsin and Karlee have been extremely helpful through a tough time in my life. They were very patient and explained every step along the way. I highly recommend them.

    - Sandy R.
    “Mr. Herbold was extremely honest with information and probable outcome.”
    “Mr. Herbold was extremely honest with information and probable outcome.”
    - L.C.
    “They provide the best service to their clients”

    I have worked with the firm for over 10 years. I have dealt with every attorney and office staff. They are kind, professional, efficient and very helpful. They provide the best service to their clients and to me as a partner in assisting them with taxes for their clients.

    - Donna S.
    “The personal attention and service is a big plus.”

    Prompt, curteous, sincere concern that you understand what and why the documents purposes are. Timely completion of requested documents with considerate follow up on action items yours or others. Second time utilizing Tamsen and her team Karlee & staff. The personal attention and service is a big plus. You won't regret this groiup representing you.

    - Tony S.
    “Always friendly and attentive.”
    Mortensen & Reinheimer, PC is a great practice for addressing family trust matters. They provided thorough and knowledgeable counsel, making the legal jargon easy to understand. The entire staff was kind and professional. They were always friendly and attentive while ensuring prompt communication. Well done and thank you to everyone at the firm!
    - Former Client
    “Jim saved us a bunch of time, money and aggravation with his cool head, knowledge and skilled responses”
    I had to deal with a bunch of different law firms during a 4 year legal battle and lawsuit over a family trust as the trustee. I switched law firms 4 times because they just ran up costs and never solved anything.

    On our first meeting, Jim ( an owner ) first said "Is there a way we can discuss with the other parties how to settle this without more legal fees and courts? " I've never had an attorney start off with how can we reduce costs and settle quicker!

    The other side was past that point and with Jim we prepared to move forward with the court case but Jim flagged a bunch of their false claims and said we wouldn't back down.

    A couple weeks before the first court date they reached out and accepted what was offered 2 years before and we all signed off on an agreement and settlement.

    Jim saved us a bunch of time, money and aggravation with his cool head, knowledge and skilled responses.
    - Craig T.
    “Mr. Weily Yang is a true professional with a good grasp of the law.”
    “Mr. Weily Yang is a true professional with a good grasp of the law.”
    - Ray Y.
    “Tamsen is an extremely thorough, proficient and creative attorney.”
    Tamsen is an extremely thorough, proficient and creative attorney. She is wise beyond her years and is one of the most thoughtful lawyers I have ever met! She always does the right thing for her clients. Her personal integrity and ethics are of the highest caliber. Tamsen helped me out with some estate issues and it is a great relief to know she is in my corner when I need her. I highly recommend Tamsen Reinheimer.
    - Tina M.

What sets us apart?

  • Personalized Care to Every Case
    We handle each case on a one-on-one basis and explore all possible options with you.
  • We strive for excellence.
    Our knowledgeable and courteous staff work hard so that you don't have to.
  • Over 75+ Years of Combined Experience

    With 75+ years of combined experience, we've handled cases of all types and can confidently help you.

Let us Help with your case

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