Printing is complete on Los Angeles County’s first approved printed house, built by contractor PCI Builders with robotic construction companies RIC Robotics and Stone River Dynamics.
The buyer, Cindy Lopez, ordered it after losing her former house in Altadena in the California wildfires of January 2025.
The builders are now busy with plumbing, electrical work and roofing.
The new house has a built-in sound-based fire-suppression system that uses low-frequency sound waves to displace oxygen, which prevents combustion.
The home’s Spanish-style architecture, including arched windows, sills and headers, allowed RIC Robotics’ to create a new system to meet printing design specifications.
PCI Builders and RIC Robotics created a permitting and inspection technique other concrete printing teams can use for similar projects in Altadena and further afield.
The team says the project represents how this type of construction is suited to wildfire-prone areas, reducing formwork, excess material, construction waste and on-site work.
It also supports the use of fibre reinforcement and geopolymer-based mixes, which enhance durability and structural performance.
“Losing my home in the Eaton Fire was devastating, but I knew I wanted to rebuild in a way that felt safer and more forward-looking,” Cindy Lopez said.
“This home represents more than my own recovery. I hope it helps other families see what is possible while encouraging local governments to recognise and invest in concrete printing as a meaningful option for communities facing increasing wildfire risk.”
The Eaton Fire destroyed 9,000 structures across Altadena.
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