Our Team
Each member of our team represents the spirit of our company: driven, committed, and acutely aware of how limitless CORE’s potential is to grow. We go to great lengths to identify self-starters with diverse experience.
Brokerage and Advisory
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Matt is the originator and founder of Team CORE and currently serves as CEO. He oversees the day-to-day operations of the company. Matt is a top broker especially known for office and high-tech transactions. He has been ranked as a CoStar Power Broker for 15+ consecutive years, holds the Certified Commercial Investment Member designation, was a Crain’s Detroit Business 40 under 40 honoree, he was the 2009 Broker of the Year, and Crain’s “Top 50 Persons to Know” in Commercial Real Estate. His personal passions include his role as a board member and Past President for EO Detroit, downhill skiing, water sports and youth travel hockey.
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Phil has over 25 years of commercial real estate experience. In this time he has established his reputation as a professional broker expert at selling and leasing medical and general office, retail, and industrial properties, including vacant land. Phil was a former hospital administrator at POH Medical Center, now known as McLaren-Oakland Hospital. He is a former Board member of the Oakland County Chamber of Commerce and the Economic Restructuring Committee (ERC) of Pontiac’s Downtown Development Authority (DDA-ERC). As a former hospital administrator, Phil has been able to translate that experience into effective representation for both the buyers and tenants of many medical entities.
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Kevin joined Team CORE with great excitement and willingness to learn after his change in careers from teaching to real estate. Tamer has been with the company since 2017 and has grown exponentially from assisting in deals to running lead and controlling his focus in the market in such a short period of time. Kevin is now a avid member at Rochester Chamber where he attends monthly events and meetings. Kevin is preparing for his Broker of Record license and is looking to obtain his SIOR membership. He resides in Rochester with his wife, Samantha, son Beckett, and dog Lenny.
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Samuel joined Team CORE as an intern in the summer of 2015, and received his real estate license that same year. He is currently a Vice President in the Advisory Division. Sam finished up at Michigan State University in 2018. Sam works with a variety of different corporate and local client’s including but not limited to Tier One Automotive suppliers and National Accounting firms. In addition, Sam and the Team have a select amount of key Industrial and Office property listings with both local and national ownership groups. One of Sam’s favorite things about working at CORE is the team mentality and culture, which he says is very noticeable when in the office. He loves that everyone collaborates across departments on a variety of projects.
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At Team CORE Samantha Tamer, has moved from assisting brokerage to Marketing Director. Samantha assists in marketing operations, heads graphic design for banners, postcards and e-fliers for listings, promotional products strategy, document prep, and client relationship management support. Apart from her daily duties Samantha is involved with helping with CORE’s event planning, on boarding of new employees, aiding in invoicing and tenant communication, and assisting in property management when needed.
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Spencer Wittebort joined Team CORE after graduating from the University of Detroit Mercy’s Business School with a degree in Business Administration. After working part-time with the company for seven months, Spencer transitioned into a full-time role as an Associate. He currently works with the brokerage team across multiple sectors including industrial, office, medical, and retail. Spencer is a licensed real estate agent and an active member of the Clarkston and Auburn Hills Chambers of Commerce. Spencer also recently attained his real estate license in Florida. In his free time, Spencer can often be found exploring new music, on the golf course, or enjoying the outdoors through surfing and snowboarding.
Property Management
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Zack brings over 10 years of experience in Project, Vendor, and Client Management to the team. Zack oversees the day-to-day operations of Team CORE’s property portfolio, along with managing the facility engineers and vendors. Prior to joining Team CORE, Zack’s Project Management experience in the technology field saw him oversee multi-million dollar project implementations.His Vendor Management experience saw him assist with vendor selection and contracts along with capital budget management He currently sits on the board of directors for Oakland University Athletics and also is a current commissioner for the American Collegiate Hockey Association.
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Since joining the company in 2014 as an Administrative Assistant, Amanda has had the opportunity to grow significantly within a few years. She now oversees the company's day-to-day operations and serves as the lead support for our Property Management Division. Previously, she also provided lead support for the Brokerage Division. In addition to these core responsibilities, Amanda is actively involved in the marketing department, including event marketing operations support, graphic design for various promotional materials (banners, postcards, e-fliers), and promotional product strategy. She also oversees the administrative staff, assists with event planning, onboards all new employees, and provides support for client relationship management. Amanda looks forward to continuing to contribute to Team CORE's success in these various capacities.
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Sarah brings over 30 years of customer relations in Oakland County with retail, event planning, marketing, automotive and property management experience. Sarah has a Bachelor of Arts from Oakland University in Communications and Rhetoric. Sarah assists with first impressions, property management, marketing, administrative support and tenant communications. Her passions outside of work include traveling, gardening, and enjoying time at her family cabin near Higgins Lake, MI. She resides in Rochester Hills with her husband Stefan and two boys Zachary, Nicholas and her dog named Winnie Rose.
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Kris has over 25 years of experience in many aspects of Real Estate. At Team CORE he is part of the Property Management division assisting in building management, customer relations as well as vendor procurement. When not at work Kris spends time in northern Michigan enjoying the outdoors.
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Tyler joined Team CORE in February 2026, taking on the role of managing accounts receivable and helping keep the team’s financial intake organized and running smoothly. Always looking for new ways to contribute, learn and improve. Outside of his role with Team CORE, Tyler is also a student at Oakland University, balancing his academic goals with his professional responsibilities. In his free time, he enjoys watching sports and spending as much time on the golf course as he can.
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Kristina brings over 25 years of customer service expertise, with a background as a business owner and extensive experience in retail and banking. At Team CORE, she oversees accounts payable and provides vital support to the brokerage team, ensuring smooth operations and exceptional service.
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Jim currently works with CORE as head technician for Rehmann buildings. Jim has had many years of experience as a tech working at the Beaumont / First Center building. Jim weekly assists with day to day client needs, plumbing, maintenance for locks / doors / tile floors / cabling / lawn sprinklers, etc at the two buildings. Outside of work Jim enjoys spending time with his children and grandbabies.
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Robert brings over 30 years of facility and maintenance service. He has 22 years facility management experience with GM and has been with CORE for over 10 years. Robert has a Bachelor’s of science and business management degree from University of Phoenix. He is currently the lead maintenance technician for the Raymond James Financial building, Allison Transmission, Woodward, and Indian Hill. He assists with day to day client needs, plumbing, maintenance for locks / doors / tile floors / cabling / lawn sprinklers, etc. His passions outside of work include bike riding, golfing, and singing in his choir.
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Jon as a former member of EQ Grounds brings in experience in landscaping and snow removal. He currently assist in the maintenance for the Raymond James Financial building, Allison Transmission, Lafayette, Woodward, and Indian Hill. Jon is head of landscaping and plowing for our buildings and assists with day to day client needs, plumbing, maintenance for locks / doors / tile floors / cabling / lawn sprinklers, etc.
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Robert brings over 30 years of building construction, home inspections, facility and maintenance management expertise. He has experience with roofing, siding, electrical, custom metal works and wood replacement for commercial and condo buildings. He has worked with various property management companies in the Detroit Metro areas and Florida during his career. He has owned his own business and has managed teams of up to 16 people. In his spare time he enjoys a round of golf and spending time with his family, grandkids and the great outdoors.