Holcim Awards Recognize the Most Innovative Sustainable Construction Projects in North America

Holcim Awards Recognize the Most Innovative Sustainable Construction Projects in North America

Sustainability in construction has moved beyond niche certifications to become a central driver of innovation across the residential and commercial building sectors. The Holcim Awards, held every three years by the Holcim Foundation for Sustainable Construction, represent one of the most respected global competitions recognizing projects that push the boundaries of what sustainable building can achieve. The North American regional winners announced in Toronto highlight a range of groundbreaking approaches to materials, water management, flood protection, and urban design. For builders tracking sustainable construction trends, the award-winning concepts offer practical directions for incorporating sustainability into everyday building practice.

The 5Ps Evaluation Framework

The Holcim Awards jury, led by U.S. architect Toshiko Mori, evaluates entries using five criteria known as the 5 Ps: progress, people, planet, prosperity, and place. This comprehensive framework examines environmental, social, and economic performance while requiring architectural excellence and a high degree of transferability. Projects must not yet be built at the time of submission, though nearly half of all past winners have since been constructed or are under construction. This track record demonstrates that the awards do more than celebrate concepts they actively catalyze real-world development by providing funding, credibility, and visibility that help winning projects attract additional investment and support.

The competition covers five global regions: North America, Europe, Latin America, Africa and the Middle East, and Asia Pacific. Regional winners advance to a global competition, creating a pipeline of sustainable construction ideas that cross geographic and cultural boundaries. The 5 Ps framework has proven durable precisely because it balances environmental performance with practical considerations of economic viability and social benefit, making it relevant for builders evaluating their own sustainability strategies.

Gold and Silver Awards: Water Management and Flood Protection

The top two prizes addressed water-related challenges from opposite ends of the spectrum: water scarcity in the arid Southwest and flood protection in a coastal urban center. Both projects demonstrate that innovative concrete and landscape design can solve water challenges while enhancing the built environment.

Gold: Poreform Urban Water Capture System

The Gold prize was awarded to Amy Mielke and Caitlin Taylor of the Water Pore Partnership for Poreform, a water-absorptive urban skin system designed for Las Vegas. The concept addresses a critical challenge in arid urban environments: capturing and utilizing stormwater runoff rather than letting it evaporate or drain away unused. In a city where water scarcity is a persistent concern, this project turns the entire urban surface into a water collection system.

The system combines two key components that work together to manage stormwater at an urban scale:

• A permeable concrete surface layer engineered for rapid water absorption, capable of preventing urban flooding even during intense rain events. The concrete is formulated with a specific pore structure that maintains load-bearing capacity for sidewalks, plazas, and roadways while allowing water to pass through freely
• A subterranean basin system that captures, filters, and stores the runoff for later use in irrigation, cooling towers, and non-potable applications. The basins are designed for periodic maintenance access and long-term durability

The projected impact is substantial: the system could add more than 75,000 megaliters (20 billion gallons) to Las Vegass water supply capacity, significantly reducing the citys dependence on Colorado River water and groundwater extraction. This approach mirrors the principles behind permeable paving systems used in green homebuilding, scaled to an urban infrastructure level with the same fundamental concept of allowing water to soak through rather than running off.

Silver: Manhattan Flood Protection Barrier

The Silver prize went to Bjarke Ingels Group (BIG) for an ambitious urban flood-protection concept protecting Lower Manhattan. The 13-kilometer (8-mile) barrier system incorporates raised berms, public spaces, and protective landscape elements designed to mitigate hurricane damage while enhancing the urban environment rather than degrading it as traditional flood walls do.

Key design features include:

1. Strategic berm placement that protects critical infrastructure while creating elevated public spaces with waterfront views. The graded slopes serve as informal amphitheaters and gathering spots
2. Protective upland landscaping that absorbs and redirects floodwaters away from densely populated areas, using natural drainage patterns rather than fighting them with pumps and barriers
3. Multi-use design where the barrier doubles as recreational space, parks, and pedestrian pathways, ensuring the investment in flood protection also improves quality of life

Practical Lessons for Residential Builders

Builders working in water-sensitive regions can draw several practical lessons from these award-winning concepts:

• Permeable concrete surfaces can serve dual structural and water management purposes, reducing the need for separate stormwater detention infrastructure on residential sites
• Integrated water capture systems add measurable property value by reducing municipal water demand and lowering stormwater utility fees for homeowners
• Graded landscaping and strategic earthwork are among the most cost-effective flood control measures available to site developers, requiring minimal ongoing maintenance
• Raising mechanical equipment, electrical panels, and finished floors above projected flood levels remains the most reliable building-scale protection strategy for individual homes
• Coordination with municipal flood protection plans can reduce on-site mitigation requirements and improve project feasibility in flood-prone areas

Bronze Award and the Future of Sustainable Building Materials

The Bronze prize recognized David Benjamin of The Living architecture lab for Hy-Fi, a zero-carbon compostable structure displayed at MoMA New York. The project represents a paradigm shift in how building materials can be grown rather than manufactured, with the potential to eliminate the significant carbon emissions associated with traditional material production such as kiln-fired clay bricks and cement-based concrete.

Hy-Fi: Growing Building Materials from Biotechnology

The Hy-Fi bricks are made from two surprisingly simple ingredients that together create a high-performance building material:

The bricks are grown in molds over several days as the mycelium binds the corn stalks into a solid, lightweight, fire-resistant material that can be formed into virtually any shape. The process requires almost no embodied energy and produces zero carbon emissions, contrasting sharply with the high-temperature kiln firing required for conventional clay bricks or the energy-intensive steam curing of concrete masonry units. For builders exploring innovative materials, this points toward a future where biological processes play a significant role in material production, potentially transforming how builders think about supply chains and end-of-life material management.

Current Status and Commercialization Path

While Hy-Fi was a temporary pavilion, several companies are now commercializing mycelium-based materials for acoustic panels, interior cladding, insulation boards, and temporary event structures. Ongoing research targets improved moisture resistance for exterior applications and scaled fermentation processes for commercial production volumes. The US Department of Agriculture and multiple university research programs are actively investigating agricultural waste streams as feedstocks for bio-based building materials, suggesting that the cost gap between biological and conventional materials will continue to narrow.

Next Generation Material and System Innovations

The Awards Next Generation category recognized emerging professionals whose ideas could reshape construction practices in the coming decade:

Ennss interlocking panelized timber system deserves particular attention from builders working in challenging locations. The precision-milled panels lock together without specialized equipment or highly skilled labor, making them ideal for remote communities, disaster recovery housing, and international development projects. This complements the growing availability of cross-laminated timber manufacturing across the United States, which has opened new possibilities for timber construction in mid-rise and multi-family applications where steel and concrete were previously the only options.

Kims thin concrete panel method addresses cements significant carbon footprint, which accounts for approximately 8 percent of global carbon dioxide emissions. By using optimized reinforcement placement and efficient cross-section geometry, the method substantially reduces material consumption without compromising durability or aesthetics in cladding and finishing applications. For builders specifying concrete finishes, this innovation points toward a future where high-performance concrete elements use less material while delivering equal or better structural results.

What Builders Can Apply Today

The Holcim Awards North American winners share five common threads with direct relevance to building professionals across the residential and commercial sectors:

1. Materials innovation is accelerating rapidly: From mycelium bricks to thin concrete panels to cross-laminated timber, the range of sustainable material options available to builders expands every year. Staying current with these developments is essential for maintaining a competitive advantage in a market that increasingly values green building credentials
2. Water management is a core design challenge: Both top prizes addressed water-related risks, reflecting the growing importance of resilience and water conservation in building design across all climate zones. Permeable surfaces and integrated water capture are no longer optional features but fundamental design considerations
3. Sustainability and affordability work together: Several winning projects demonstrated that environmentally responsible design succeeds within real-world budget constraints when approached holistically from the outset. The most cost-effective sustainable strategies are those integrated at the design phase rather than added as upgrades later
4. Prefabrication reduces waste and improves quality: The panelized timber system and thin concrete innovations both point toward off-site manufacturing as a key strategy for reducing material waste, improving quality control, and shortening construction schedules
5. Biotechnology is entering construction: Biological processes will play an increasing role in material production, offering pathways to carbon-negative building materials that sequester carbon rather than emitting it. Builders who understand these materials now will be positioned to specify them effectively as they reach commercial maturity

The top three North American winners advance to the global Holcim Awards competition against projects from Europe, Latin America, Africa, the Middle East, and Asia Pacific. For builders and specifiers, these projects serve as a valuable benchmark for what is possible when sustainability drives the design process from the outset rather than being treated as a compliance requirement or afterthought. Staying informed about material innovations and award-winning techniques ensures that building professionals remain competitive in a market where green building credentials increasingly influence buyer decisions, financing terms, insurance premiums, and regulatory requirements across North America.