Sustainable building materials are gaining popularity and becoming increasingly necessary. The built environment accounts for nearly 40% of global CO2 emissions. And, to combat climate change, humanity needs to rethink how we construct buildings.
That’s where sustainable building materials come in. From greener alternatives to concrete to building blocks made from recycled plastic, they offer a valuable and promising solution to the environmental issues we face today.
But what are the sustainable building materials that will reshape building in 2026? Below are seven green building materials that will create the carbon-neutral homes and cities of the near future.
Contents
1. Cross-Laminated Timber
One key sustainable building material that will reshape sustainable building in 202 is laminated and compressed wood panels, such as Cross-Laminated Timber (CLT). These materials are very strong, comparable to the sturdiest materials, such as steel, while also being significantly lighter. Developed in the 1990s, it has gained popularity over the last 20 years and is now widely accepted. It’s an alternative method for timber construction, particularly seen in larger commercial buildings.
What makes this sustainable building material so special is that, instead of emitting carbon, CLT sequesters it. In other words, trees are harvested and used to produce materials like cross-laminated timber, which absorbs carbon and retains it within the wood structure for the building’s lifespan. We’re likely to see mass timber used in taller and more complex buildings, moving from niche projects to mainstream urban construction, enabled by evolving building codes.
2. Mycelium
Another unusual yet ingenious building material for sustainability, which is likely to gain popularity in 2026, is mycelium. This is a composite material composed of the root network of fungi and agricultural waste, such as corn husks or wood chips. What makes this sustainable building material particularly beneficial is that it’s grown, not manufactured. Unlike other traditional materials, the process requires minimal energy, and the end product is fully biodegradable, fire-resistant, and an exceptional insulator.
However, it’s important to note that mycelium is not yet used for primary structures. Growing it to the scale needed to be a commonplace, sustainable building material is also a challenge. Although there have been developments in research into overcoming the challenges of growing large-scale building components, we’re still not at a stage where mycelium is used for primary structures. Instead, mycelium will likely become a go-to for high-performance insulation, acoustic panels, and interior design features.
3. Recycled Plastic Lumber and Bricks
Recycled plastic lumber and bricks are another great sustainable building material that will continue to reshape the industry in 2026. Recycling is already incredibly common, with 87% of Americans acknowledging that recycling is important — however, using recycled materials is likely to gain significant traction in the future.
What makes this sustainable material so important is that it directly addresses the plastic pollution crisis by turning waste into a valuable, durable resource. These materials are also waterproof, pest-resistant and long-lasting — which makes them perfect in a wide range of scenarios. In 2026 and the decade ahead, this type of material is likely to be widely used in non-structural applications, such as decking, fencing, and public infrastructure, thereby creating a scalable circular economy for plastics.
4. Green Concrete
Concrete is one of the most widely used construction materials globally and is highly detrimental to the environment due to its contribution to global carbon emissions. However, green concrete, a building material and practice designed as a cleaner and greener alternative to concrete, is likely to gain traction as a building material and will reshape how environmentally conscious building is done in the future.
Green concrete replaces a significant portion of traditional cement with industrial by-products, like fly ash from coal or slag from steel manufacturing. FORTA-FERRO, a macro synthetic fiber reinforcement product, is another eco-friendly alternative to traditional concrete, used to increase its longevity.
By 2026, tighter emissions regulations and growing corporate ESG commitments are expected to drive green concrete into the mainstream, making low-carbon mixes the standard practice on major commercial and infrastructure projects, rather than a niche alternative.
5. Self-Healing Concrete
Self-healing concrete may sound like something out of science fiction, but it’s actually a reality that is set to reshape sustainability in 2026. In essence, this is a building material that integrates concrete with dormant bacteria or water-activated microcapsules, which produce limestone to autonomously fill cracks as they appear.
It can dramatically extend the lifespan of infrastructure, making it perfect for bridges, tunnels and buildings. It also reduces the immense cost and carbon footprint of repairs and replacement when these giant structures break. In 2026, we’re likely to see Self-healing concrete used for critical infrastructure projects, especially in harsh marine or underground environments where maintenance is difficult.
6. Carbon-Capturing Materials
Carbon-capturing materials will also reshape sustainable building in 2026. Ferrock, for instance, is an iron-based alternative to cement, made from recycled steel dust and other industrial waste. Ferrock is particularly useful as, when it hardens, it traps and binds atmospheric CO2, making it a truly carbon-negative material.
In other words, it cleans the air as it gets stronger. While still in the early stages of widespread adoption, it’s likely that by 2026, Ferrock and similar carbon-tech materials will be used in precast applications, such as pavers, blocks, and marine structures.
7. Hempcrete
Hempcrete is another sustainable building material that is likely to gain prominence in 2026. This is a biocomposite created by combining the woody inner stalk of the hemp plant with a binder that is lime-absorbed.
Hempcrete is a game-changer due to its carbon-positive properties. The hemp plant, from which the material is made, absorbs CO2 as it grows, allowing the material to sequester more carbon than it emits.
It’s also incredibly versatile. Hempcrete is used most commonly in insulating walls, floors and roofs, often as an infill within a timber or steel frame, but it can be used in many other settings too.
Likewise, the help crop can thrive in infertile soil conditions, and due to its natural biological ability to cleanse soil, it can be applied to crop rotations for regeneration. With hemp cultivation becoming increasingly widespread, hempcrete is poised to become a dominant force in the high-performance, healthy home market for insulation and wall infill.
A Shift Toward a Greener Future
Sustainable building is likely to reshape the construction industry in the years ahead. As it stands, there’s still a long way to go before we adapt to a fully eco-friendly method of building, but the materials listed above are a step in the right direction.
These materials are more than just blocks — they’re the foundation for a healthier, more resilient, and truly sustainable world. In 2026 and the years ahead, climate change will become a prominent concern for both policymakers and the wider public, and these materials will likely be front and center in the shift toward a greener future.
As innovation accelerates and regulations tighten, wider adoption will depend on affordability, education, and industry buy-in. But momentum is building, and sustainable construction is no longer a niche alternative.