We Value

cor·ner·stone    /ˈkôrnərˌstōn/

  • 1. A stone that forms the base of a corner of a building, joining two walls.
  • 2. An important quality or feature on which a particular thing depends or is based.

We strive to provide you with THOROUGH, OBJECTIVE, INDEPENDENT and UNBIASED opinion backed by our strong Guam real estate market knowledge, advanced education and commitment to professional ethics and standard. Our products and services will enable you to make sound decisions and maximize return on your real estate investment. “We Value” not only what we do but our commitment to you through our professionalism and timely service.

Meet the Team

Siska S. Hutapea

Engaged in real estate research, valuation and consulting since 1992. Appraisal assignments include residential, commercial, industrial and resort property throughout Indonesia. Part-time lecturer in Tarumanagara University, Jakarta, Indonesia in valuation-related subjects from 1997 through 1999. Read More

Kimberly Kono
Real Estate Appraiser Trainee

A Research Analyst at Cornerstone Valuation Guam, Inc. since 2015 and transitioned to a Real Estate Appraiser Trainee in 2018.  Ms. Kono holds a degree in Business Administration concentrating in Finance and Economics from the University of Guam.

Noah Austin
Research Analyst

 A Research Analyst, Mr. Austin relocated back to the island and rejoined the team in 2016.  He previously served as a Research Analyst for Cornerstone Valuation Guam in 2013-14, prior to moving off-island.