Top 21 Construction Waste Recycling startups

Updated: Dec 11, 2025
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These startups develop sustainable building technologies such as construction waste recycling, carbon-sequestering concrete, plastic-to-construction tech, recycled steel framing, low-carbon insulation materials, bio-based wall panels, etc.
1
Sublime Systems
Country: USA | Funding: $202M
Sublime Systems develops technologies to decarbonize cement production. The company claims that, unlike traditional cement manufacturing, which wastes up to 50% of raw materials and 40% of energy, its process eliminates the use of a kiln (the most energy-intensive part of OPC production) and replaces it with a targeted electrochemical process, reducing energy consumption by 30-40%. Their technology also prevents emissions of CO2, CO, NOx, SOx, mercury and particulate matter. The company converts low-value rocks and toxic industrial solid waste into clean cement and pure minerals. It up-cycles the entire stone, leaving no waste, unlike approximately 50% of the limestone raw material lost as pollution during OPC production. Sublime Cement is said to be more durable than modern OPC-cement in virtually all applications.
2
BioMason
Country: USA | Funding: $95M
Biomason is a developer of a building materials technology that employs natural microorganisms to grow bio cement in ambient temperatures.
3
Selfrag
Country: Switzerland | Funding: CHF23.4M
Selfrag is a privately held company that specializes in the development, engineering, and marketing of high voltage pulse power products.
4
Mogu
Country: Italy | Funding: €14.2M
MOGU is an innovative design company developing and commercialising responsible products and circular solutions for interior design, architecture, fashion & beyond. This, by radically disrupting the design and production of everyday items through the development of targeted biofabrication-based technologies, mainly rooted in employing fungal mycelium.
5
Urban Machine
Country: USA | Funding: $7.2M
Urban Machine reclaims wood waste from construction and demolition sites and repurposes it into sturdy lumber products.
6
Criaterra
Country: Israel | Funding: $6.9M
Bio-Geo Agglomerated Stone technology for cement-free precast products for construction with concrete strength, 6x better insulation
7
Mycocycle
Country: USA | Funding: $6.4M
Mycocycle uses mushrooms to upcycle old tires and construction waste. Mycocycle’s patent-pending process improves the natural functions of fungi to transform construction waste into low-carbon raw materials for the built environment.
8
EcoLocked
Country: Germany | Funding: €6M
EcoLocked provides a turnkey solution for the construction industry to build with climate-neutral concrete. It is creating a climate-friendly built environment by converting captured carbon into highly functional concrete admix materials.
9
Hyperion Robotics
Country: Finland | Funding: €4.6M
Hyperion Robotics designs, engineers, and manufactures sustainable, low-carbon concrete for infrastructure and buildings.
10
Greenful
Country: Estonia | Funding: $4,5M
Greenful manufactures sustainable and low CO2 construction materials at scale from recycled textile and plastic waste.
11
Concular
Country: Germany | Funding: €2.6M
The digital ecosystem for circular construction
12
Kenoteq
Country: UK | Funding: £1.5M
KENOTEQ is a clean tech company, which specialises in building products. KENOTEQ’s first product is an unfired brick with 90% recycled content from demolition and construction waste.
13
Sustainability Yard
Country: UK
Sustainability Yard is focused on driving circularity and avoiding the problem of construction and building waste going into landfill through its innovative marketplace platform where tier 1 and 2 construction businesses, developers, home builders, merchants and DIYers can buy, sell, give away and move unused materials.
14
Ricron Panels
Country: India
Ricron Panel recycles, manufactures, and markets plain panels and eco-roof sheets.
15
SoNiA Green Tech
Country: Australia
SoNiA Green Tech has developed a revolutionary method for producing polymer-modified bitumen that uses much less energy.
16
Angirus
Country: India
Angirus is environmentally friendly and sustainable technology to construct lightweight, damp-proof bricks and paver blocks.
17
Le Pave
Country: France
Le Pavé is a manufacturing firm that specialize in transformation of plastic waste into usable building material.
18
Material Mapper
Country: Norway
Material Mapper is an AI-powered forecasting tool for locating reusable construction materials.
19
Superyard
Country: Australia
Superyard is a marketplace built to serve the construction industry to connect buyers and sellers of unused materials sitting in yards all over Australia. Ritchie’s lightbulb moment came when he had trouble finding materials and used his retail and technology experience to create a service to power the construction industry’s circular and sharing economy.
20
Repurpose
Country: Netherlands
Repurpose supports contractors, project developers and governments in the reuse of building materials from transformation and demolition projects.
21
Optocycle
Country: Germany
Optocycle is developing an AI-based system designed to assess construction waste in real time. Optical sensors scan rubble as it moves along conveyor belts. The system focuses on recycled mineral aggregates. These materials form a key input for concrete and road construction.
  See also:
Marjana Bačić
Editor: Marjana Bačić
Marjana Bačić is a senior editor for RecyclingStartups. She has has more than 5 years experience covering the recycling industry. Marjana graduated from University of Belgrade, where she edited Recycling and Sustainable Development Journal. She has helped several non-profit organizations dedicated to promoting environmental education and sustainability. She also participates in beach clean-up initiatives and advocates for sustainable practices in local businesses. In her free time, Marjana enjoys hiking in the scenic Montenegrin countryside, practicing yoga for mindfulness, and experimenting with plant-based recipes in her kitchen. You can contact Marjana at marjanabacic(at)recyclingstartups(dot)com