About Us

Faster builds. Higher performance. Lower cost.

4C turns any architectural design into certified, factory-built exterior wall panels, interior partitions, and roof and floor framing. We deliver the complete 4C scope through one coordinated process from design through installation and warranty.

Our Mission

Construction should deliver more.

Traditional construction depends on fragmented teams, disconnected handoffs, and too much field labor. 4C brings design coordination, manufacturing, delivery, installation, and warranty into one system, reducing schedule risk, cost uncertainty, and inconsistent performance without changing how projects are designed, permitted, or financed.

“A Better Way to Build Without Changing the Building: 4C replaces multiple materials and on-site trades with a standardized, factory-built system that delivers faster dry-in, higher performance, and greater certainty. The building itself, from design and permitting to financing and inspection, remains entirely conventional.”
Yonah Naftaly
Yonah Naftaly
CEO, Co-Founder
In The Media

As seen in the news.

See how 4C is meeting the urgent need for fire-resilient construction with factory-built speed and precision, predictable schedules, and the flexibility to bring any architectural design to life.

The 4C Standard

Our name is our standard and our vision.

4C stands for Cost, Carbon, Complexity, and Compliance, four lenses guiding every decision. It also reflects our vision to foresee construction's future and make it adoptable today, delivering better outcomes and measurable value.

01

Cost

Reducing upfront, carrying, and operating costs through factory efficiency, faster installation, and higher performance.

02

Carbon

Reducing embodied and operational carbon through efficient, high-performance assemblies, and less jobsite waste.

03

Complexity

Replacing fragmented trades, suppliers, and handoffs with one coordinated process from design through installation.

04

Compliance

Traditional planning, permitting, and inspections, supported by documented, ICC-ES-listed assemblies.

Credentials

Licensed, listed, and ready to build.

CSLB License #1145002

Licensed California Contractor

CSLB #1145002

Licensed, bonded, and insured with a California General Building Contractor (B) classification to coordinate and install the complete 4C scope.

CAB #N41299

Licensed Architect

CAB #N-41299

California-licensed architect supporting design and coordination of the complete 4C system.

Two ICC-ES Listed Assemblies

Code-Listed Assemblies

SAFE and ECO are ICC-ES listed

Tested, documented, and patent pending, with options for a wide range of building types and code requirements.

Where We Work

Headquartered in the Bay Area. Building across California.

Our manufacturing facility sits at 2447 Industrial Parkway, Hayward, CA, giving us direct reach into the San Francisco Bay Area, and efficient logistics to project sites throughout the state, including Los Angeles, San Diego, and Sacramento. We're currently running a dedicated rebuild program for homeowners and builders in Altadena and the Pacific Palisades.

View All California Locations

Let's talk about your next project.

Whether you're starting a new project or rebuilding after fire loss, our team is ready to help.