The Property Sciences Commercial Appraisal team is composed of highly trained, credentialed professionals
with nationwide experience in commercial appraisals, appraisal review, quality control procedures, information
systems management, econometrics, real estate investment analysis and urban planning. With decades of diverse,
professional experience and excellent academic training, Property Sciences is uniquely qualified to advise you
in your most important real estate collateral decisions. For immediate commercial division information, contact
our Andrew Mekjavich, VP Client Services Manager Andy.Mekjavich@propsci.com
or call direct 925.246.7326.
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Paul E. Chandler, MAI
Founder & CEO
925.246.7301
Paul.Chandler@propsci.com
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Mr. Chandler, as founder and CEO, brings 30 years of experience to the company's commercial division,
providing MAI credentials for national clients in addition to leading the residential team. Prior to forming
Property Sciences, he was Senior Vice President of Corinthian Real Estate, where he provided financial institutions
with market analysis, branching strategy and site acquisition consulting.
Mr. Chandler holds an MBA with an emphasis in real estate from the Haas School of Business, University of California,
Berkeley and a BS in Business Administration with an emphasis in finance from the University of California, Berkeley.
Additionally, he holds a California Real Estate Broker's License is a member of the Appraisal Institute holding the
MAI designation and is a state certified appraiser with the General Certification.
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Bernard A. Duer, AG
Vice President
925.246.7323
Bernard.Duer@propsci.com
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Bernard Duer is the Vice President of the Commercial Division for Property Sciences.
He has over 20 years of experience performing appraisals and consulting assignments
including valuation and feasibility analysis on a variety of property types, such
as office, industrial and retail facilities with emphasis on special use properties
including marinas and wineries. Mr. Duer has extensive experience in agricultural
valuations including row crop and permanent plantings. He manages the research and
data resources of the firm and serves as the Chief Review Appraiser for appraisals
performed by companies outside of Property Sciences.
Mr. Duer holds the State of California Certified General Real Estate Appraiser License.
His education includes a Master’s Degree in Geography from Columbia University with
an emphasis in economic market research and statistical methods applied toward location
analysis. He is currently an Associate Member of the Appraisal Institute.
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Douglas A. La Rocca, AG
Chief Appraiser
925.246.7324
Doug.Larocca@propsci.com
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Douglas A. La Rocca is the Chief Appraiser for Property Sciences. He has over 10
years experience providing valuation and feasibility analysis for various property
types including single-family, office, retail, industrial and special use properties.
His areas of expertise include self-storage facilities, residential and commercial
subdivisions, lodging and hospitality properties, and religious facilities. Mr.
La Rocca has also lectured on a vast array of real estate topics and is an accomplished
public speaker.
Mr. La Rocca holds the Certified General Real Estate Appraiser License for California
and Arizona as well as a California Real Estate Broker’s License. His education
includes a Bachelor’s Degree in Psychology and advanced degrees in theology and
philosophy. Mr. La Rocca is working towards attaining his MAI designation.
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Russell (Leang) Tiv, AG
Vice President
213.443.4501
Leang.Tiv@propsci.com
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Russell (Leang) Tiv is the Vice President of the Commercial Division for Property Sciences in the southern CA corporate
office. As a 12-year industry veteran, he works closely with large financial institutions and investors to monitor
markets, update portfolio risks and execute acquisition and disposition strategies. He has extensive experience
analyzing land, subdivisions and master planned communities.
Mr. Tiv holds the Certified General Real Estate Appraiser License for California and Nevada. His education includes
a Bachelor’s Degree in Architecture with a minor in City and Regional Planning from the University of California at
Berkeley. He is currently an Associate Member of the Appraisal Institute and is working towards attaining his
MAI designation.
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Dean Huynh, AG
Vice President of Appraisal Services
925.246.7381
Dean.Huynh@propsci.com
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Mr. Huynh’s seven years of appraisal experience include a variety of complex property types including subdivisions,
lodging properties and condominium developments. He is also the company's project manager of special assets portfolios,
pension fund projects and product development. In his overall corporate managerial role, he uses a hands-on approach
to IT development and project design specifications.
Mr. Huynh a Certified General Real Estate Appraiser. He graduated from the University of California at Los Angeles
with a B.A. in Economics with a Programming Specialization.
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Justin Eichman, AG
Managing Director
925.246.7304
Justin.Eichman@propsci.com
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Justin Eichman is the Managing Director of the Commercial Division for Property
Sciences. Since joining the firm in 2001, Mr. Eichman has valued a multitude of
property types including, retail, office, multi-family, industrial, residential
subdivisions and land. His experience also includes partial interests, special use
properties, and consulting assignments. His specialties include proposed projects,
subdivisions and land within various stages of the entitlement process. In addition
to completing appraisal assignments, Mr. Eichman has training, review and final
signing responsibility for many complex risk assignments.
Mr. Eichman holds the State of California Certified General Real Estate Appraiser
License. His education includes a Bachelor’s Degree in Architecture and a Master’s
of Business Administration (MBA) degree with an emphasis in Finance from California
Polytechnic State University in San Luis Obispo.
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Luis R. Lorca, AG
Senior Analyst
925.246.7315
Luis.Lorca@propsci.com
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Luis R. Lorca is a Senior Analyst within the Commercial Division of Property Sciences.
Since joining the firm in 2001, Mr. Lorca has appraised all property types including
office, industrial, retail, religious facilities, condominiums, multi-family, affordable
housing, nursing homes, restaurants, residential subdivisions, car wash and service
station facilities, and agricultural land. His experience also includes partial
interests, easement valuation and portfolio assignments. Most recently his practice
has been focused on business valuations and litigation support.
Mr. Lorca holds a Certified General Real Estate Appraiser License and Real Estate
Broker’s License for the State of California. His education includes a Bachelor’s
Degree in International Business from the University of San Francisco and a Master’s
of Business Administration (MBA) degree from St. Mary’s College. He is working towards
attaining his MAI designation.
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Tom Mong, AG
Senior Analyst
213.443.4540
Tom.Mong@propsci.com
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Tom Mong is a Senior Analyst within the Commercial Division of The Property Sciences
Group. Since joining in 2003, Mr. Mong has provided valuation and feasibility analysis
for various property types including office, industrial, retail, condominiums, multi-family,
restaurants, residential subdivisions, spas and resorts. His experience also includes
partial interests, special use properties, business valuations and consulting assignments.
Mr. Mong holds the State of California Certified General Real Estate Appraiser License.
His education includes a Bachelor’s Degree in Business Administration with an emphasis
in Finance from the California State University of Los Angeles.
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Alex Khasin, AG
Real Estate Analyst
925.246.7336
Alex.Khasin@propsci.com
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Alex Khasin is a Real Estate Analyst within the Commercial Division of Property
Sciences. He has appraised a wide variety of property types, such as retail, office,
industrial, multi-family, service station and car wash facilities. He also has experience
performing highest and best use studies, tenant lease and ground lease evaluations,
market area sales and rental surveys, and market overviews focusing on rental, capitalization,
vacancy and absorption rates for a variety of industries.
Mr. Khasin holds the State of California Certified General Real Estate Appraiser
License. His education includes Bachelor’s Degrees in Economics and History from
Brandeis University and a Master’s of Business Administration (MBA) degree from
California Polytechnic State University in San Luis Obispo. He is currently an Associate
Member of the Appraisal Institute and is working towards attaining his MAI designation.
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Vathana Duong, AG
Real Estate Analyst
925.246.7386
Vathana.Duong@propsci.com
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Vathana Duong is a Real Estate Analyst within the Commercial Division of Property
Sciences. He has provided valuation and feasibility analysis for various property
types including office, industrial, retail, condominiums, multi-family, and mixed-use
properties. His experience also includes feasibility studies, special use properties,
portfolio and consulting assignments. His specialties include residential subdivisions,
lodging and hospitality properties, and land within various stages of the entitlement
process.
Mr. Duong holds the State of California Certified General Real Estate Appraiser
License. His education includes a Bachelor’s Degree in Managerial Economics from
the University of California at Davis.
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