MarWest Commercial specializes in the management and repair of commercial property owners’ associations nationwide. Founded in 2003 and acquired by FirstService Corporation for its specialized CPOA expertise, MarWest Commercial manages approximately 350 commercial associations across office, industrial, medical, retail, and mixed-use projects.
Headquartered in Irvine, California, we deliver full-service commercial association management with the personalized attention of a boutique firm, supported by the resources and infrastructure of a global organization. Our team partners with boards and owners to protect and enhance long-term asset value.
Headquartered in Irvine, California, we deliver full-service commercial association management with the personalized attention of a boutique firm, supported by the resources and infrastructure of a global organization. Our team partners with boards and owners to protect and enhance long-term asset value.
Leadership Team
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Amy Mathieson
Amy Mathieson
President -
David Rainer
Vice President -
Nicole Egner
Nicole Egner
Vice President, Business Development -
Sharon Whitney
Sharon Whitney
Vice President
Amy Mathieson
Amy Mathieson
President
Serving as President, Amy brings over 20 years of Human Resources, Business Operations and leadership experience to the MarWest Commercial team. Amy’s authentic and direct approach to commercial association management creates a proactive environment for our clients and team to thrive.
David Rainer
Vice President
As Vice President, David Rainer brings over two decades of experience in the property management industry. In his role at MarWest, David is focused on driving operational excellence and strengthening team performance, building on the disciplined approach that has defined his career. With a legal background, he is a key resource in the areas of risk management, debt collection, and the implementation of evolving regulatory requirements. David holds a Bachelor of Arts in Philosophy from the University of California, Riverside, and a Juris Doctor from Loyola Law School.
Nicole Egner
Nicole Egner
Vice President, Business Development
Nicole Egner holds a Bachelor of Science in Business Administration from Chapman University and brings over 17 years of experience in commercial real estate management. As Vice President of Business Development, she drives MarWest’s national growth strategy, partnering with institutional investors and business owners to deliver tailored management solutions. Known for aligning strategy with execution, Nicole helps clients navigate complex association needs while reinforcing accountability, consistency, and long-term value. She is a licensed real estate broker in California.
Sharon Whitney
Sharon Whitney
Vice President
Sharon Whitney graduated Magna Cum Laude from Arizona State University with a Bachelor of Science in Business Management and is an active member of IREM and NAIOP. She brings over 14 years of property management experience and leads the MarWest Commercial team in serving clients throughout the United States, from Arizona to North Carolina. Sharon was instrumental in successfully launching the Texas market for MarWest Commercial, helping to establish a strong foundation for the firm’s continued growth and national expansion.
Financial Team
Charlii Honghin
Charlii Honghin
Controller
Charlii serves as Controller for MarWest Commercial, leading the company’s accounting operations and financial reporting functions. With over 10 years of accounting experience, including more than seven years specializing in residential and commercial property management, his background includes client tax preparation, nonprofit accounting, and corporate finance. Charlii is focused on strengthening internal controls, enhancing operational efficiency, and ensuring accurate, reliable financial management that safeguards client assets.
Management service professionals
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Cassandra Towles, Regional Manager
Cassandra Towles
Regional Manager, Orange County & Inland Empire -
Cindy Dopf
Cindy Dopf
Regional Manager, Orange County -
Kelly Cwynar, Regional Manager
Kelly Cwynar
Regional Manager, Arizona -
Stephanie Jordan
Stephanie Jordan
Regional Manager, Nevada -
Justine Rios
Justine Rios
Senior Portfolio Manager, Texas -
Trista Payton
Trista Payton
Regional Manager, San Diego -
Briana Vogt
Briana Vogt
Regional Manager, Bay Area
Cassandra Towles, Regional Manager
Cassandra Towles
Regional Manager, Orange County & Inland Empire
Cassandra holds a Bachelor of Science in Hospitality Management from California Polytechnic University, Pomona, and began her career in property management in 2020. As a Regional Manager at MarWest Commercial, she is recognized for building strong client relationships, maintaining proactive communication, and taking a hands-on approach to property operations. Cassandra partners closely with Boards and owners to protect and enhance asset value through disciplined oversight and responsive service.
Cindy Dopf
Cindy Dopf
Regional Manager, Orange County
Cindy Dopf brings over 32 years of commercial property management experience, including more than 20 years with MarWest Commercial. She is known for her strong accounting background and detail-oriented approach to financial oversight and operations.
Prior to joining MarWest, Cindy worked on the developer side of the business, providing valuable insight into project development and long-term asset performance.
Prior to joining MarWest, Cindy worked on the developer side of the business, providing valuable insight into project development and long-term asset performance.
Kelly Cwynar, Regional Manager
Kelly Cwynar
Regional Manager, Arizona
Kelly has more than 10 years of experience in commercial property management and holds a Bachelor of Science in Business Management from Niagara University. She works closely with commercial associations and real estate owners to provide tailored recommendations that improve operational performance and support long-term asset value. Kelly is known for her practical, solutions-oriented approach and her ability to align day-to-day management with broader ownership objectives.
Stephanie Jordan
Stephanie Jordan
Regional Manager, Nevada
Stephanie, regional manager for Nevada has 14+ years of experience in CIC property management with an extensive background in sales and operational support. Additionally, Stephanie is a member of CAI and CREW Las Vegas.
Justine Rios
Justine Rios
Senior Portfolio Manager, Texas
As Senior Portfolio Manager, Justine brings over eight years of experience in the property management industry. She has a strong track record of overseeing property operations, partnering with board members and clients, and managing the day-to-day needs of the communities she serves. Known for her clear communication, reliability, and client-focused approach, Justine is committed to driving operational excellence, fostering strong relationships, and delivering long-term value to MarWest’s clients & their commercial associations.
Trista Payton
Trista Payton
Regional Manager, San Diego
Trista is an experienced real estate professional with over 16 years of industry expertise. She has managed diverse portfolios across the East, West, and Central Coast regions, giving her a well-rounded perspective on property operations and client engagement. Trista is known for her ability to build strong client relationships, streamline operational processes, and deliver a consistently high standard of service across varied markets. Her experience and hands-on approach enable her to bring thoughtful, practical solutions that support both asset performance and long-term client success.
Briana Vogt
Briana Vogt
Regional Manager, Bay Area
Briana holds a Bachelor of Science in Business Administration with a concentration in Marketing from California State University, East Bay. She brings more than 9 years of commercial property management experience across the Bay Area, with specialized expertise in commercial condominium associations. Based in San Ramon, Briana is known for her dedication to client service and operational excellence. In recognition of her outstanding contributions, she was honored with a Service Excellence Award in 2026.