About Us



Assessment Appeal Advisors, LLC is headquartered in Calabasas, CA and specializes in contesting unfair property assessments in order to reduce our client's property tax installments for as long as we can provide our efforts. Our firm works directly with the County Assessor and the Assessment Appeals Board for which the property is located at in order to ensure your property is assessed fairly. Our experience and knowledge results into different ways our firm can create the problems regarding your assessments into solutions that will assist you in obtaining savings.

Since 1992, our efforts have been responsible for obtaining millions of dollars in property tax refunds to real estate owners. Our staff has an extremely high level of success and is experienced with appealing all property types throughout all counties within Southern California. We work and represent all type of property owners and real estate investors, from families and their primary residences, to local real estate developers, as well as corporations listed on Forbes' "America's Largest Private Companies", all while providing the same uniform quality of service and consideration to all clients.

Mark Kanter

Co-Principal Owner

Mark Kanter graduated from the University of Southern California in 1989 with a degree in Business Administration, with an emphasis in Real Estate Finance. Mark began his real estate career as an investment real estate broker with Marcus and Millichap, specializing in commercial and multi-family real estate. Since then, Mark has also been a  successful active real estate investor.

In 1992, as the Southern California market began to enter a recession, Mark left Marcus and Millichap to begin specializing in property tax consulting and contesting unfair property values. Since then, Mark has been responsible for the recovery of tens of millions of dollars. Mark has continued to grow his clientele base through extremely satisfied clients, and continues to serve many reputable real estate professionals in the industry with their property taxes.

Jeff McGuire

Co-Principal Owner

Jeff McGuire graduated from the University of Southern California, where he earned his degree in Real Estate with an emphasis in Management and Organization. Jeff is widely recognized for being the #1 Re/Max commercial agent worldwide, along with multiple other prestigious achievements while at Re/Max. Jeff has also been involved as a sales investment specialist and principal buyer for over 24 years, including his key role in over 300 transactions, totaling over $1.2 billion closed in real estate.

Jeff partnered with Mark to create Assessment Appeal Advisors, LLC to help property owners contest property unfair tax assessments. Since then, Jeff has had success representing former clients as well as many new clients, including companies listed on Forbes and all their real estate under management. 

Elliott Kimmel

Senior Advisor


(818) 985-6400 ex.225

Elliott Kimmel joined Assessment Appeal Advisors in 2009 after graduating cum laude from California Lutheran University, with a major in Business Administration and a minor in Political Science. In addition to earning a degree from California Lutheran University, he also studied abroad in Graz, Austria at an international business school, with a focus on global markets, and attended LCWS in Washington D.C, working at a public relations firm.

Specializing in all real estate asset classes and legal issues, Elliott has successfully appealed over $6 billion in California and Nevada real estate tax assessments and has earned a reputation as an outstanding tax agent. Elliott prides himself with providing the same quality service to "mom and pop" owners as he does to large portfolio managers. Elliott has also been a licensed real estate broker in California since 2016.

Rudy Ramirez

Property Tax Advisor


(818) 985-6400 ex.232

Rudy Ramirez is the most recent addition to join the Assessment Appeal Advisors staff. Rudy graduated from California State University, Northridge while earning a degree in Finance, with an emphasis in Investment Analysis, and a minor in Real Estate. Rudy is also certified through Bloomberg's Market Concept, specializing in a comprehensive understanding of financial markets.

Rudy has successfully assisted real estate investors and home owners in reducing the assessed values of their properties throughout various regions in Southern California. Through market research and analysis, Rudy has also assisted property owners who were unaware that their properties were being unfairly over-assessed, resulting in Rudy being able to assist them to receive permanent tax savings on their investments. Rudy has also had an active real estate license in California since 2017.