Concrete printing is officially finished on what’s being called Los Angeles County’s first approved 3D-printed home, a milestone rebuild taking shape in Altadena for Eaton Fire survivor Cindy Lopez.
Lopez had already started working with local firm PCI Builders back in the fall of 2024, before the fire tore through her neighborhood. After losing the house, she didn’t just rebuild what was there. She and PCI Builders opted for a fire-resilient construction method that’s still rare in Southern California: robotically printed concrete walls, built layer by layer instead of framed with wood.
The printing itself was handled by RIC Robotics, which reproduced Lopez’s Spanish-style design, arched windows, decorative sills and headers included, without simplifying the architecture to fit the technology’s limits. Los Angeles County issued PCI Builders the permit for the project back in late February, and the project team says it’s the first fully approved 3D-printed home in the county, following an earlier 3D-printed accessory dwelling unit built in Walnut in 2024.
“When Cindy lost her home, our goal was not simply to replace what had been there,” said Allison Allain, founder and CEO of PCI Builders, describing the ambition behind swapping a standard rebuild for a more resilient one.
With the walls complete, the project has moved into plumbing and electrical inspections, and roof trusses have already arrived on site. The finished home will also include a sound-based fire-suppression system from Sonic Fire Tech, added on top of the required sprinklers, with field support from Stone River Dynamics rounding out the project team.
For LA-area business owners, especially those in construction, architecture, and property services, this project is worth watching closely. Post-fire rebuilding across Altadena and the broader San Gabriel Valley has created real demand for faster, more resilient construction methods, and a county-approved permitting path for 3D-printed concrete homes lowers the barrier for other local builders to offer the same option. It’s the kind of local innovation story that doubles as a signal of where the region’s construction and rebuilding economy is headed.
Whether or not printed concrete becomes standard practice, Lopez’s home is a real, visible example of small local companies solving a genuinely hard problem for their neighbors.
Source: Pasadena Now
Are you a local business owner? Add your business listing on Los Angeles Business Web today.