In the late 20th century, the way buildings were designed and constructed in the United States was undergoing a quiet but important shift. While building codes had long ensured minimum standards for safety—protecting occupants from structural failure, fire and other hazards—they did not address a growing concern: the environmental and human health impacts of buildings themselves.

By the early 1990s, architects, engineers and environmental advocates were beginning to recognize a troubling reality. Buildings were responsible for a significant portion of energy use, water consumption and greenhouse gas emissions. At the same time, many indoor environments were contributing to poor air quality, discomfort and even illness among occupants.

This realization birthed a new idea: What if buildings could be designed not just to meet minimum standards, but to actively improve environmental performance and human well-being?

This question led to the founding of the United States Green Building Council (USGBC) in 1993.

The USGBC was not created by a single industry group. It emerged as a coalition—a diverse gathering of professionals from across the building sector. Architects, builders, product manufacturers, environmentalists and real estate developers came together with a shared goal: to transform the way buildings are designed, constructed and operated.

At the time, there was no widely accepted definition of what a “green building” actually was. Some designers focused on energy efficiency. Others emphasized materials, water use or indoor environmental quality. Without a common framework, it was difficult to measure performance or compare projects.

The founders of the USGBC saw the need for a unified approach.

Their purpose was ambitious but clear:

Establish a common language for sustainable building

Promote best practices across the industry

Encourage innovation beyond minimum code requirements

Educate both professionals and the public

Importantly, the USGBC was not a regulatory body. It did not create laws or enforce compliance. Instead, it operated as a voluntary, consensus-driven organization. Its strength lay in collaboration and leadership rather than mandates.

A key idea driving the organization was market transformation. If building owners and developers saw value in sustainability—through reduced operating costs, healthier spaces and enhanced reputation—they would choose to build better, even without being required to do so. This market-based approach has become a defining feature of the USGBC’s work.

The growing awareness of climate change, although not as widely discussed as it is today, and the connection between buildings and carbon emissions was becoming increasingly clear. Improving building performance was seen as a critical strategy in reducing environmental impact.

Likewise, there was a growing awareness that the built environment affects people in deeply personal ways. Indoor air quality, access to natural light, thermal comfort, and acoustics all influence how people feel and function in a space. A truly “green” building should support both environmental sustainability and human health.

In its early years, as the USGBC focused on research, education and developing partnerships among stakeholders, it quickly became clear that something more tangible was needed—a tool that could guide design and provide measurable outcomes. That tool would become Leadership in Energy and Environmental Design, (LEED).

The creation of the USGBC and the LEED certification platform marked a turning point in the building industry. For the first time, sustainability was being treated not as an optional feature or niche interest, but as a central design principle.

Today, the influence of the USGBC can be seen across the country and around the world. Green building practices have become mainstream, and many of the ideas that were once considered innovative are now expected.

At its core, the organization’s founding vision remains the same: to move beyond the minimum, and to redefine what it means for a building to truly perform well—for both people and the planet.