Providing plan review services on an as-needed basis doing overflow plan review directly for the City of Mercer Island since 2016. Kolke Consulting Group is also a pre-approved third-party plans examiner offering pre-approval for owners and developers seeking an expedited review. Mercer Island is known for its many great parks and waterfront views and was noted in a 2023 news article in The Center Square as one of the richest cities in the country after a US Census Bureau demographic and economic conditions study.