Mark Hepner, SRA
Certified Residential Appraiser and Designated Member of the Appraisal Institute
Mark is a native Oregonian and Portland resident for nearly 40 years. He graduated from the University of Oregon in Business Administration with major fields of study in Real Estate and Urban Economics, and continues his education with professional classes and seminars. Mark has over 40 years of appraisal experience and holds the prestigious SRA Designation from the Appraisal Institute. He has also completed the Appraisal Institute’s Professional Development Program for Litigation. He has been with the firm since 1983 and was a co-owner/manager of Portland Residential Appraisals from 1989 to 2022. Specialties include complex and high-end residential properties, litigation work, and Central Coast properties. Mark is licensed as a Certified Residential Appraiser in Oregon and is FHA approved.
MacKenzie Robertson, SRA
Principal, Appraiser and Designated Member of the Appraisal Institute
Kenzie has been a lifelong resident of Oregon and was born and raised in Portland. She began her career in real estate appraising after graduating from the University of Oregon in 2014. Kenzie joined the firm of Portland Residential Appraisals, Inc. in February 2015 and completed training under Mark Hepner, SRA. She is a Certified Residential Appraiser and holds the SRA Designation from the Appraisal Institute. She has also completed the Appraisal Institute’s Professional Development Program for Valuation of Sustainable Buildings: Residential. She is competent in appraising many types of properties and has worked on several complex assignments, such as rural acreage properties, properties with subdivision potential, high value estate properties and green certified homes. When not working, she enjoys backpacking, running, volleyball, and reading.
Taylor Johnson
Registered Appraiser Assistant
Taylor has spent most of his life in the Portland area and has also lived in Washington and California. He graduated from Western Washington University in 2020 and began his career in appraisal shortly afterward. Taylor became an Oregon State Certified Residential Appraiser in 2023 after working under Mark Hepner and MacKenzie Robertson. He is competent in valuing a wide variety of properties, including but not limited to non-complex residential homes, high-rise condos, rural acreage properties, vacant land, and complex multi-family assignments. Taylor’s experience also includes valuations for purposes of estate tax, divorce, selling decisions, and various private party litigation. When not working, Taylor enjoys going to sporting events, traveling, playing golf and spending time with friends/family.
Greg Lamunyan, SRA, AI-RRS, AGA
Principal, Designated Member of the Appraisal Institute
Greg Lamunyan has been an Oregonian since 1991. After serving in the United States Marine Corps, he went back to school and graduated with a bachelor’s degree in Geography from Portland State University. He is a state Certified Residential Appraiser, committed to continuing education. This is evidenced by his Designated Membership of the Appraisal Institute (SRA), (AI-RRS), his accreditation as an Accredited Green Appraiser (AGA), and his Worldwide ERC Appraisal Training. He provides a broad range of fee-based valuation services to attorneys, accountants, estates, title companies, private parties, brokerages, relocation companies and direct lenders. He specializes in litigation work and is an experienced expert witness. He has completed the Appraisal Institute’s Professional Development Program for Litigation along with additional course work related to litigation assignments. Property types include residential land, single-family homes and two-to-four-unit plex’s. Experience includes valuations related to estate tax, generation-skipping gift tax, non-cash charitable contributions, divorce, bankruptcy, tax appeal, title claims, construction defects and mediation. When not working, he enjoys spending time with family, outdoor activities and traveling.
Jonathan Herdina
Certified Residential Appraiser
Born and raised in the suburbs of Portland, Jonathan is a lifelong resident of Oregon. He graduated from George Fox University in 2010 with a Bachelor of Science Degree. He began his appraisal journey at a local Appraisal Management Company as a QC Analyst in 2019. He joined Portland Residential Appraisals in June 2020 and completed training under Greg Lamunyan, SRA, AI-RRS. He is pursuing the SRA designation from the Appraisal Institute to continue his life-long pursuit of continuous improvement. He has more than 2 years of experience appraising complex properties including waterfront, high-value homes, small multi-family, small acreage with outbuildings, and new custom construction. When not appraising, Jonathan enjoys spending time with his wife and kids, including coaching his oldest son’s soccer team. They especially enjoy hiking, traveling, and spending time at the beach.
Mackenzie Tattershall
Production Support Assistant
After moving to Oregon with her family in 2018, Mackenzie joined Portland Residential Appraisals in 2021. She comes to us with over a decade of administrative and support experience. Previous experience includes the management and preparation of reports and documents for expert witness use in construction defect matters. Her skillset and background make her an excellent fit for our firm. When she’s not working, she loves spending time with her husband and their three sons. She also enjoys writing and creating art in her spare time.
