Mitsch Design, a commercial interior architectural design firm, announced plans to expand its headquarters in Hamilton County, nearly tripling its office space and creating up to 43 new jobs by 2021. The company will invest $2.38 million to expand its headquarters in the Indiana Design Center. The Indiana Economic Development Corporation (IEDC) offered up to $75,000 in training grants and up to $225,000 in conditional tax credits based on the company’s job creation plans. The city of Carmel supports the project.