About ISI: Your Partner in Sustainable Infrastructure

The Institute for Sustainable Infrastructure (ISI) is the organization that developed and manages Envision, a framework that encourages systemic changes in the planning, design, and delivery of sustainable, resilient, and equitable civil infrastructure through education, training, and third-party project verification.


Help communities around the world build sustainable, resilient, and equitable civil infrastructure.
Train and credential Envision® sustainability professionals and verify projects using Envision®.
Protect the environment, enhance human health and well-being, and bolster economic prosperity.


At ISI, we imagine a world where all infrastructure is sustainable, resilient, and equitable. To ensure that happens, we provide people with the tools, resources, and roadmaps needed to succeed. For us, better infrastructure equals a better world, and working in partnership with our members and ENV SPs, we help communities thrive and prosper while restoring and healing the planet.

To learn more about ISI’s goals and objectives, please read and download the ISI brochure.

Based in Washington, DC, ISI is an education and research nonprofit (a 501c3) that was established in 2010 by the American Public Works Association (APWA), the American Society of Civil Engineers (ASCE), and the American Council of Engineering Companies (ACEC). ISI collaborated with the Zofnass Program for Sustainable Infrastructure at the Harvard University Graduate School of Design to develop Envision.


  • We manage the Envision Sustainability Professional (ENV SP) credential and all continuing education curricula to designate professionals who have a deep understanding of sustainability and resiliency. ENV SPs are considered subject matter experts in sustainable and resilient civil infrastructure.
  • We oversee the Envision Rating system that evaluates all types of public and private infrastructure projects. Once verified, we apply an overall score to project submissions, recognizing them as Envision Verified, Envision Silver, Envision Gold, or Envision Platinum.
  • We oversee a membership program for organizations, public service agencies, academics, and professionals. Our members are granted access to proprietary resources, receive discounts on credentialing and continued professional development, and are listed in our directories as an Envision Qualified Company or Professional.  Public sector agencies are listed in our directories as Envision Supported Agencies. We also welcome and encourage members to become involved in the continued development of the Envision framework.
  • We also work with our partners and members to advocate for Envision sustainability.

ISI has witnessed exponential growth in recent years and has established a network of more than ten thousand individual practitioners, government agencies, companies, and other organizations that are recognized members and ENV SPs.

Though headquartered in the United States, Envision is growing in Canada, Italy, Mexico, Spain and around the world through project verification and credentialing.

In Italy, the Envision credentialing and verification programs are administered by ICMQ through Envision Italia. ICMQ (Institute for Certification and Quality Branding for Products and Services for Construction) is a non-profit association that encompasses numerous sector associations operating in every part of the construction industry.

Visit this page for more information about our global partners.