Kathryn has more than 25 years of experience in real estate development and specializes in all aspects of permitting and entitlements for both commercial and residential projects.  

She currently represents her district on the Pierce County Planning Commission and is a board member on the Tacoma-Pierce County Affordable Housing Consortium.

In addition, Kathryn is a licensed real estate broker with Windermere Real Estate Gig Harbor.

Kathryn Jerkovich


Land Use Planner



Mike has more than 40 years of practical experience in residential and commercial site development from project planning through construction.  

Mike is a licensed on-site septic designer and also has experience installing systems.  He applies his knowledge, experience and a no nonsense approach to design systems that are best suited for the project.

About Us

With over 40 years of experience in all phases of site development, Harborstone Consulting, LLCis qualified to handle your project from site feasibility through project completion.

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

Mike Jerkovich


Licensed Septic Designer