Our Consulting Team

Andrew Clarke – Founder and President

Andrew Clarke Ground Floor Partners ConsultingAndrew has advised hundreds of businesses on business strategy, marketing, operations and other issues. He has worked with companies in a wide variety of industry verticals, including energy and environment, medical equipment, biomedical labs, healthcare services, advertising, technology and telecommunications, finance, residential and commercial real estate, insurance, retail, food service, music/entertainment. He has also worked with universities and non-profits.

Before starting Ground Floor Partners Andrew led all technology planning and operations at commercial real estate firm Equis (now DTZ-UGL).

Andrew also has extensive experience as an entrepreneur. In 1997 he founded ListNet, a real estate listing and advertising service on the Internet. He managed all aspects of the business including strategy, operations, marketing, sales, and web site development.

From 1995 to 1998, Andrew worked as Vice President of Analytics and then Vice President of Product Development at Hedge Financial Products, a privately held boutique derivatives firm in downtown Chicago. He led the risk management and quantitative analysis efforts for the Chicago office, designed several complex proprietary crop reinsurance risk models, and supervised a team in all aspects of model development from inception to completion.

From 1979 to 1994, Andrew was a scientist and engineer, working in a variety of technical and management positions in academia and industry. He has published papers in the areas of Theoretical Chemistry, Fluid Mechanics, and Materials Science, and worked as a Research Scientist at University of Washington, Cornell University, and University of British Columbia.

Andrew holds advanced degrees from University of Rochester, University of California at San Diego, and University of Wisconsin.

Yvonne Petterson – Senior Business Consultant

Yvonne has experienced all aspects of business ownership, from start-up to successful exit. She was an owner of Brittanie’s Thyme LLC from 2007-2017. She and her partner took the company from craft shows to national chains and export markets. Along that journey, she helped other companies with feasibility studies, marketing plans, strategic plans, problem solving, etc. The reward of helping other businesses grow and thrive led her to the field of business consulting.

Before becoming an entrepreneur, Yvonne worked as a contract editor and researcher at Euromonitor International. This experience helped her gain in-depth knowledge of packaged consumer goods across a broad spectrum of markets.

Yvonne is an expert in market research. She enjoys designing and analyzing surveys, conducting focus groups and doing interviews. And if any relevant databases or market research reports are hiding on the Internet, Yvonne will find them.

Yvonne graduated in 1991 with a BA in Political Science from Midwestern State University of Texas. She spent two years working in the field of humanitarian aid in the Middle East after graduation. Yvonne loves coffee, is married with two children, and continues to work for social justice and environmental causes.


Ground Floor Partners also has other business consultants on call for large and small projects.