Kathryn has been involved in real estate in some capacity for more than 25 years and specializes in all aspects of land use consulting, construction permitting, project feasibility for both commercial and residential projects, as well as the purchase and sale of properties.  

In addition, Kathryn manages and oversees the day-to-day operations of the company.

She also currently represents District 7 on the Pierce County Planning Commission and is a licensed real estate broker.

Mike has more than 40 years of experience in land development feasibility, septic system engineering and installation and residential, commercial and heavy civil site development.  

In addition to being a highly skilled heavy equipment operator, Mike is a Washington State licensed on-site septic designer and provides onsite septic engineering services for both residential and commercial projects.  He uses his years of experience and knowledge to apply a no-nonsense approach to land development.  

Mike Jerkovich

​​WA State Licensed On-Site Septic Designer



About Us

With over 65 years of combined experience in all phases of real estate, Harborstone Consulting, LLC  is qualified to handle your project from property feasibility through project completion.

Through our years of experience in the real estate development industry, Harborstone Consulting, LLC has developed excellent working relationships with architects, engineers, environmental consultants, land-use attorneys, land surveyors, contractors, brokers and other professionals who can be recommended as a member of a project team.

Kathryn Jerkovich


Land Use Consultant | Permit Specialist

Real Estate Advisor