At $410k, the 1,150-square-foot home shows how Californians can build safer without sacrificing cost
Los Angeles, CA — June 12, 2026 — In the hills of Eagle Rock, Builtech Construction completed Los Angeles’ first known ICF (Insulated Concrete Form)-based ADU built to meet Type I standards, the highest fire-resistance classification under the International Building Code (IBC) and California Building Code (CBC). Located in a high-risk Wildland-Urban Interface (WUI) zone just blocks from the Eaton Fire evacuation area, the 1,150-square-foot home integrates a holistic, whole-home fire-resistant system designed to withstand up to three hours of direct fire exposure. The project marks a milestone in how Californians can approach resilient residential construction before the next disaster strikes.
One of the most notable aspects of the project is the time and labor saved through ICF construction. The entire exterior wall structure was completed in just 10 days with a crew of two to three people, compared with the three or more workers typically required for traditional wood-frame construction. ICF uses lightweight hollow foam blocks – stacked like oversized Lego pieces – that are reinforced with rebar and filled with poured concrete to form solid, non-combustible walls. Beyond fire resistance, ICF walls deliver exceptional soundproofing and thermal insulation. According to the homeowners, even with a major highway nearby, the interior remains nearly silent, with indoor temperatures staying around 70°F while outdoor temperatures reach 100°F.
"We took an idea and made it real," said Aaron Liu, Founder and CEO of Builtech and a Certified Wildfire Mitigation Specialist. "ICF is practical, it's efficient to build, and the cost is accessible. Our hope is that this project opens people's eyes to the fact that fire-resilient housing isn't out of reach, and more Californians deserve to feel safe in their homes."
Beyond its ICF walls, this ADU incorporates a holistic fire-resilient system designed so no single point of failure is left exposed.
- The roof is built with cold-form steel trusses, topped with a metal deck and lightweight concrete.
- The home uses closed-cell spray insulation, eliminating the need for traditional attic vents that can become ember entry points.
- Windows feature customized fire-resistant windows with triple-tempered glass and a full fire-resistant screen that maintains high light transparency.
- The rooftop plumbing vent uses cast iron, a commercial-grade detail rarely seen in residential builds, replacing the standard plastic vent that can melt and open a fire pathway.
All told, the 1,150-square-foot, two-bedroom home was completed at approximately $410,000, comparable to a traditional wood-frame quote in the area, but with a significantly stronger fire-resilience profile.
"Honestly, I was surprised by the price; it came in right around what we were quoted for a regular wood home," said Karl, the homeowner. "But this is concrete and steel. Knowing our family has a home that can stand up to fire and whatever else comes, that peace of mind is priceless. It already feels like a completely different level of security."
The project arrives at a time when many California homeowners are weighing not only how to rebuild, but how to build differently, as wildfires become more frequent and insurance grows harder to secure. Builtech is already seeing growing interest from homeowners and is in the early design stages of a new project in San Diego, signaling that demand for fire-resistant homes is beginning to take hold across the state. For Aaron, the message is simple: wildfire resilience is not about one product or one material. It is about designing the entire home as a system, so no single weak point is left exposed. And it can be done in a way that is accessible.
About Builtech Construction
Builtech Construction Group is a California-based construction firm specializing in resilient, non-combustible building solutions for residential and commercial projects. Led by licensed contractor and Certified Wildfire Mitigation Specialist Aaron Liu, the company provides full-service design, engineering, permitting, and construction across the Bay Area and Los Angeles. With expertise spanning ICF (Insulated Concrete Form), 3D concrete construction, cold-formed steel, and hardened traditional builds, Builtech aims to lead California’s transition toward safer, more sustainable homes and buildings.
Source: Builtech Construction.
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