Precast Concrete Blocks Designed to Build Efficiently and Sustainably
At Envirocon, we lead the way in sustainable construction with our innovative precast concrete blocks system. This system is designed to support the circular economy by transforming waste into long-lasting building solutions. Instead of letting quality materials go to waste, we take high-quality surplus concrete and transform it into durable, reusable precast concrete blocks. As a result, we have created New Zealand’s most sustainable construction system.
Furthermore, as the country’s first and only accredited construction product stewardship scheme, we design products with ultra-low embodied carbon that can be reused, recycled, or repurposed at the end of their life. Moreover, our buyback guarantee ensures our blocks stay in circulation, which helps in reducing waste, conserving resources, and keeping concrete out of landfills.
Finally, our key products Interbloc and Stonebloc are durable, reusable precast concrete blocks used for retaining walls, storage, and infrastructure. Ultimately, Envirocon redefines construction by turning waste into long-lasting, sustainable building solutions.

