According to the UN, the “buildings and construction sector is by far the largest emitter of greenhouse gases.” Sustainable architecture, in essence, tries to change that—and is more needed than ever. As climate change intensifies, it challenges architects and designers to consider the impact of their work in every step of the building process, from raw materials to site impact to future maintenance, decades down the line. Here, we spoke to several architects about their practice and how the key facets of sustainable architecture show up in everyday projects.
What is sustainable architecture?
Sustainable architecture refers less to how a building looks and more to how it performs; it’s a way of building that considers the full life cycle of a structure, from building materials to daily use to eventual maintenance or reuse. Thus, distilling sustainable architecture down to one pillar or practice is practically impossible. “It’s not only a matter of energy performance or material efficiency,” says Eran Chen, founder of ODA. “It begins with extending the life of existing structures, conserving embodied carbon, and creating buildings that remain useful, adaptable, and meaningful over time.”
Generally, building sustainably means building with a carbon footprint in mind, and engineering creative solutions to keep that footprint small. “Materials are chosen for their origins and their long-term impact, buildings are oriented to natural light and views, and the footprint is guided by how to tread as lightly as possible,” adds Lucia Bartholomew, cofounder of Electric Bowery.
Why is sustainable architecture important?
“When sustainability becomes only a label, nothing improves. When the idea is taken seriously, architecture can actually reduce the impact buildings have over the decades they exist,” says Scott Specht, founder of Specht Novak. “Buildings use a huge amount of energy and materials, so how we design them has real consequences.”
For residential projects, sustainability can be incredibly important to clients not only for ethical reasons, but for comfort and reliability: “People want homes that feel good, run efficiently, and do not require constant upkeep,” adds Specht. On an urban level, sustainable architectural design becomes more pressing as populations grow. “Cities are growing denser while facing escalating ecological and social pressures,” says Chen. “Designing responsibly means reducing waste, reusing resources, and creating buildings that contribute positively to the public realm.”
History of sustainable architecture
“The history of sustainable architecture begins long before the term existed, in a time when buildings were shaped by climate, local materials, and an intuitive understanding of how to work with the land,” says Bartholomew. Over more recent decades, sustainable architecture has evolved into a critical discipline that integrates principles of environmental responsibility with modern architectural design practice. Sustainable architecture as the term we know now was popularized during the 1960s and 1970s as environmental awareness was growing (Rachel Carson’s Silent Spring, an opus of sorts that inspired the modern environmental movement, was published in 1962).
The 1990s marked a turning point, as sustainable architecture became more formalized. In 1998, the US Green Building Council launched LEED (Leadership in Energy and Environmental Design), the world’s most recognized green building rating system. LEED certifications provide a concrete framework for healthy, efficient, and cost-saving buildings—pillars now commonly considered the core of sustainable building and eco-friendly green architecture.
Now, in the 21st century, net-zero and energy-positive buildings have become more mainstream in the built environment. Lowering energy consumption of buildings by utilizing natural ventilation, passive shading, natural or recycled materials that require little maintenance, and minimizing site disturbance have all become common sustainable strategies.
“In the end, these characteristics grow out of a design mindset that values clarity, usefulness, and long-term performance,” adds Specht. “When those pieces are in place, sustainability becomes a natural outcome rather than a slogan.”
Common characteristics of sustainable architecture
Despite differences in style and scale, sustainable buildings tend to share common methodologies: passive design strategies, an emphasis on energy efficiency, and a lighter footprint on the land.
Thermal mass architecture utilizes denser construction materials (like concrete, stone, and brick) to regulate indoor temperatures naturally, reducing operating energy and improving comfort by moderating daily heat fluctuations.
Passive shading describes the use of built-in elements (think: overhangs, fins, vegetation, strategic window placement) to limit heat gain, control glare, and reduce the need for mechanical cooling and lighting. “Passive shading, ventilation strategies, orientation, thermal mass, and courtyards are often more effective than any high-tech solution,” says Specht.
“Many of these ideas come from traditional building types that evolved over centuries in specific climates. They are simple, proven, and usually far more durable than mechanical fixes.”
Careful material choices—choosing something local and fit for the environment—can have huge impacts on a building’s lifespan. “Using locally available materials that age well and require little maintenance reduces environmental impact and makes the building feel tied to its place,” adds Specht. “In our work, that might mean weathering steel, simple masonry, or other straightforward systems that hold up without a lot of intervention.”
Thoughtful strategies around water use are another core feature of sustainable architecture. From rainwater collection to managing runoff and reducing consumption, these systems work with natural water cycles to lower demand on infrastructure and protect surrounding ecosystems.
Famous example of sustainable architecture
Around the world, architects have tackled sustainable architecture from all angles: using natural vegetation to support natural temperature control and cultivate a rich ecosystem, turning to all-electric methods to cut emissions, and innovating new technologies and materials to reduce the embodied carbon of a building. These three projects give a glimpse into some pioneering examples of sustainable architecture.
Completed in 2014, Bosco Verticale is a sustainable reimagining of the classic residential high-rise building design, with plants distributed across each level of the façade. Designed by Stefano Boeri, the two towers support more than 700 trees, 11,000 perennial plants, and 5,000 shrubs, integrated directly into the building’s balconies. The vegetation acts as a natural climate buffer—shading interiors, improving air quality, and reducing urban heat—while also nurturing thousands of specimens of birds and butterflies, restoring biodiversity in a dense city.
Located in Downtown Brooklyn, 505 State Street stakes its claim as New York’s first fully electric skyscraper, eliminating natural gas entirely in favor of electric heating, appliances, and HVAC to cut carbon emissions and improve indoor air quality. Completed in 2024, the 44-story tower houses 441 apartments—including affordable units—and anchors a mixed-use block designed for sustainable, transit-oriented urban living.
The Pixel Building was designed by Studio 505 as a prototype for sustainable commercial design, becoming Australia’s first carbon-neutral office building and earning a perfect 105 Green Star score and LEED Platinum. It achieved this using a few key strategies: Pixel generates it own power using solar panels and wind turbines; treats and reuses rainwater; uses smart ventilation strategies to dramatically cut energy consumption and water use; and uses innovative “Pixelcrete,” a unique concrete mix shown to use almost half the embodied carbon when compared with traditional concrete designs. Pixel proves that sustainability can be a functional part of everyday architecture, setting a global benchmark for resource efficiency.
