About
Corporate Team
R. Ashton Rowles
MAI, MRICS, President
R. Ashton Rowles, MAI, MRICS is currently a Senior Director for Archstone Appraisal Group, LLC and head of the executive team. Ashton started Archstone in 2017 after 12 years with Colliers international, where most recently, he served as Executive Managing Director Valuation over Latin American.
Ashton also previously worked for the U.S. Department of State as a Senior Real Estate Appraiser, assisting with valuation-related matters for acquisition and disposal for the U.S. Government’s International Real Estate holdings.
Ashton has personally performed appraisals in 40 states and 22 countries. He has overseen and reviewed appraisals in over 40 countries. He has been involved in numerous fields within real estate valuation, including: single asset valuation, Portfolio valuation, market analysis, feasibility studies, lease and cost analysis, highest and best use analysis, rent analysis, eminent domain, litigation support, insurance valuation, foreclosure and bankruptcy support, and tax mitigation.
Adriana Gastelumendi
Finance and Accounting
Adriana is a dual American-Peruvian citizen currently residing in Peru. Following her studies in Business Administration Adriana moved to the United States where she excelled in the hospitality industry: she worked in multiple managerial positions for the Peninsula Hotel, one of the United States’ pre-eminent five-star hotels. Adriana is fluent in English and Spanish and has continually increased her knowledge of business administration in a variety of different environments and positions, both in the United States and in Peru.
Ericka Simmons
Chief of Operations
Real estate professional with experience in real estate private equity, valuation and finance; model development, green improvements and energy analysis and sustainable building training. Specific knowledge of the Mid-Atlantic and NYC metro areas.
Benjamin Greenberg
Operations and Marketing
Previously Manager of Mexico City office for Deloitte and Duff & Phelps. National Marketing Director for Archstone Appraisal Group
Bruce Greenberg
Managing Director
Bruce D. Greenberg, FRICS/RICS Registered Valuer, MAI/SRA, ASN ARM Real Property and Machinery & Equipment is the Managing Director of Archstone Group in Tucson, Arizona and former Managing Director of Duff & Phelps Mexico, Deloitte’s Mexico Real Estate Advisory Services and Valbridge Arizona. Bruce originally was the President and Owner of Montana Verde Consultores y Valuadores S.R.L. de C.V (Founded in 1998) and Bruce D. Greenberg Inc. (Founded in 1981).
Mr. Greenberg is a registered Perito with the lnstituto de Administraci6n y Avaluos de Bienes Nacionales (INDAABIN). Mr. Greenberg was the lead advisor to INDAABIN, Mexico’s federal agency in charge of the administration and valuation of all public properties, in adapting International Valuation Standards as a mandatory requirement for all federal government assets. This organization is in charge of determining, leading the planning, the policy and administration of all federal Real Estate and Personal Property assets and appraisals.
Over the past 45 years, Mr. Greenberg has established relationships with leading real estate lenders, agencies, developers, governmental officials and has performed more than 20,000 valuation and/or consulting assignments in about 20 nations throughout the North and Latin America and the Caribbean. After completed his first assignment in Mexico in 1997, he has since performed nearly 3,500 assignments encompassing more than 7,500 properties throughout North and Latin America and the Caribbean in various real estate matters in the commercial, industrial, residential, touristic and hospitality real estate sectors. These relationships are crucial in order to gather reliable and sufficient data to competently meet the needs and standards of the various real estate industries.
Michael L. Miller
MAI, Managing Partner
Ryan P. Lin
MAI, Managing Partner
Advisory Team
Ashton Rowles
MAI, MRICS, Boise, Idaho and Special Projects
Ericka Simmons
Washington DC Director, Affordable Housing, Global Benchmarking
Mark Savage
MAI, New England Director & Latin America
Richard Cornogg
MAI, Pennsylvania and Agriculture
Joe Consoli
MAI, Baltimore and Transit Oriented Developments
Michael Chaffee
Virginia, Litigation Support, and Self Storage
Aaron Anderson
Denver, Affordable Housing, and Going Concern
Timothy Moore
Denver, Subdivision and Commercial
CK Yang
Asia, Highest and Best Use, Hospitality, International Funds
Daniel Kennedy
Appraisal Trainee, International Research, Technology Support
Affilliate Advisors
Daniel Jackel
MAI, MRICS, Hospitality, Cashflow, Complex Consulting, Sao Paulo, Brazil
Mariano Carruzo
Buenos Aires SFC Hospitality Worldwide
George Mann
MAI, CRE – Senior Reviewer and Quality Control
Jim Jeffrey
Mintwood Investors, project manager, development, lending
Jerry Clawson
Azure Waterfront Properties – International Due Diligence and Mortgage brokerage
Curvin Leatham
Area Probe – CEO