Proudly Serving All of Ventura County

Our clients live in Simi Valley, Moorpark, Thousand Oaks, Newbury Park, Westlake Village, Camarillo, Oxnard and Ventura

Our Philosophy

We believe it’s not about the law, it’s about people, and our approach reflects that. We aim to create lasting relationships with our clients and to become trusted advisors they can count on. We take the time to listen to your fears, desires and dreams, and we work with you to craft a unique, custom-tailored solution that you understand and can use.

What Can You Expect Working With Us?


You can expect the highest standards of professional and personal conduct.


You can expect to receive compassionate counsel and advice as we guide you in designing and implementing and effective, well thought out plan.


You can expect to develop a long-term relationship with the firm, where we are available to assist you and your loved ones every step of the way.


You can expect us to work together with your existing advisors to design and implement the most effective plan for you.


You can expect us to treat your situation as unique and craft a tailor-made approach according to your needs and desires.


You can expect us to be knowledgeable about the law and sound in our advice.

WealthCounsel Member

About Attorney Marc Mackenzie

I became an estate planning attorney because I want to help families. The legal system can be confusing and intimidating, but it doesn’t have to be. I strive to be first and foremost a counselor to my clients. I speak in plain English and truly want you to understand your options and help your make wise decisions. With good planning, not only can future headache and expense be avoided, but you can leave a legacy for your family, taking care of them even after you are gone.

I also practice business law, because as a former small business owner myself, I know the importance of building something, and what it means to you and your family. I’ve been in your shoes, from startup to sale, and understand well what it means to be a business owner.

I take pride in providing each of my clients with one-on-one counseling, responsive, clear communication, and excellent service. I work closely with you to make sure your goals are realized. Estate planning is a lifelong process, and I strive to build relationships that last long after we first meet.


Marc Mackenzie received his J.D. with honors from The George Washington University Law School. During law school, he was a member of The George Washington Law Review and served as a Dean’s Fellow. He earned his B.A. from University of California Santa Cruz. Prior to founding Acorn Law, he worked as an associate in the Washington, D.C. office of the international law firm Hogan Lovells.

Marc is a member of the Ventura County Bar Association, Lawyers With Purpose, The National Association of Elder Law Attorneys, ElderCounsel, and WealthCounsel.

Marc is an Eagle Scout and is active in his community. He lives in Simi Valley with his wife and daughter, along with their two Saint Bernards Barkley and Benson.