• CHA Releases the 2020 Sustainability Report

  • Reiss Engineering is Now CHA

  • CHA Wins 2021 ACEC Indiana Grand Project Award

  • CHA Captures Six 2021 ACEC New York Engineering Excellence Awards

  • Technology: The View From Above

  • Maine Plastic Surgery Earns AIA Maine 2020 Design Award

  • Join the CHA Team

    Seeking inspired employees who want to
    responsibly improve the world we live in

When You're Ready to "Get Back To Normal"

Keys to Safe Indoor
Air Quality


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