Greenfield Advisors
The breadth of our experience is illustrated by high-profile projects such as expert witness service in contaminated property litigation and mortgage-backed securities lawsuits; managing the tax assessment system for Port-au-Prince, Haiti; and capital raising for clients in the real estate industry.


Since 1976, we have been on the cutting edge of real estate and economic analysis. Our focus has been on complex real estate issues such as litigation, development, and preservation. From our headquarters in Seattle, Washington and our secondary office in Cartersville, Georgia, we serve clients all over the world. Historically, we have been best known for our expertise in contaminated property valuation. Our founder, Dr. Bill Mundy, introduced the term “stigma” to the appraisal lexicon, and our widely-cited methods of mass appraisal and automated valuation modeling have been adopted in both State and Federal Courts throughout the United States. Most recently, we have made a name for ourselves by providing expert consulting services in residential mortgage-backed securities (RMBS) litigation, with a focus on residential property valuation.

Greenfield is regarded as one of the leading firms in the world in our core areas:


Providing support for litigation and non-litigation matters involving real estate valuation, economic, and financial analysis, including advisory on high-amenity trophy properties.

Data & Analytics

Developing long-term data solutions for other businesses using our automated valuation model (AVM), data curation services, and other bespoke tools.

Global Advisory

Establishing tax-assessment systems for developing communities across the globe, and completing economic and feasibility studies for clients looking to secure EB-5 Visas.



John KilPatrick, PH.D., MAI, FRICS

John Kilpatrick, Ph.D., MAI, FRICS

Chairman and Co-Managing Director john@greenfieldadvisors.com

Dr. Kilpatrick has more than 30 years of experience in the real estate and appraisal industry. He is a certified appraiser in all 50 states, and has testified as an expert witness in a wide range of lawsuits.



Denise Hemphill, MBA

Director, Finance denise@greenfieldadvisors.com

Denise is a member of the company’s Management Team, providing financial expertise and guidance.

Lisa Mc Sherry, SPHR

Director, Administration lisa@greenfieldadvisors.com

Lisa is a member of the company’s Management Team and has been with the company for fifteen years. She oversees the day-to-day operations of Greenfield Advisors and its subsidiaries.

Jonathon Hirschi


Jonathon is an experienced statistician and R programmer. He has experience in a wide range of real estate valuation projects including contaminated property valuation, rmbs, and easements. 

Jessica Kenyon, MS


Jessica is an experienced statistician who has conducted a comprehensive review of spatial interpolation techniques available within ESRI ArcMap software and the statistical package R. She has software development experience in R and Python and programming experience in R, SAS, MATLAB, Mathematica, and Python.

Abigail Mooney

Senior Analyst / RMBS Program Coordinator

Abigail specializes in managing large-scale litigation projects, and serves as the Program Coordinator across all RMBS matters at the firm. She is also a member of our Marketing Team and offers support in data management and various technical tasks.

Kerry Mulvaney

Senior Analyst / Certified General Appraiser

Kerry has extensive experience in large-scale litigation, including projects involving mortgage-backed securities, environmental contamination,  appraisal review, domestic and international trophy property valuation, patent disputes, preservation/conservation projects, high-amenity land valuation, condemnation, and Rails-to-Trails valuation. Kerry has been with Greenfield Advisors for over 20 years, is a graduate in Spanish and Political Science from the University of Wisconsin – Madison, and is a Certified General Appraiser in Washington, Oregon, Wisconsin, and California. She is a member of the American Real Estate Society.

Tyler Rogstad


Tyler provides support to our team using his skills in data analysis, financial forecasting, and reporting. He has experience analyzing and underwriting business loans in the nonprofit, real estate, and commercial industrial industries.

Kasia Rozanska

Data Systems

Kasia works with project leads across a variety of projects. Kasia specializes in SQL and database administration. She has experience analyzing and managing data as well as projects at the firm. 

Linda Tayntor

Senior Analyst

Linda works primarily on complex real estate valuation, particularly appraisal of environmentally impaired property, and frequently serves as project lead on litigation projects, including those involving residential mortgage-backed securities.

Paul Topping


Paul has 20 years of experience in wide areas of real estate such as brokerage, REO, valuation, corporate relocation, asset management, commercial real estate and real estate branding. He leads complex RMBS valuation litigation projects as well as social media marketing.


What We Do Best

Litigation Support

We are the preeminent voice in matters of complex real estate valuation for litigation.


We build complex automated valuation tools and algorithms for real estate and built environment-related industries.

Business + Finance

We use our skills in economic and financial analysis to assist clients with the EB-5 Visa process, business valuation, REITs, and more.

EB-5 VISA Support

Our staff works closely with clients to compile the necessary data to build comprehensive business plans and economic impact studies for any business venture.

Real Estate Analysis

From contaminated property to easements, complex valuation is our specialty.

Tax Assessment Systems

Our experienced team has worked in many jurisdictions across the globe, giving us a unique and extensive knowledge of appraisal systems.

Get In Touch

2101 4th Ave, Suite 1335
Seattle, WA 98121
Phone: +1 206 623 2935
FAX: +1 206 623 2985