Steel vs wood framing cost
Cost, speed, fire, and durability, how cold-formed steel compares to wood for California homes.
Read →Light gauge steel, structural & modular FAQ.
Straight answers on light gauge steel framing, structural steel, and modular volumetric construction in California, how they perform, what they cost, and how Cal Steel builds.
Frequently asked questions
What builders, developers, and owners ask us.
What is light gauge steel (LGS) framing?
Light gauge steel, also called cold-formed steel (CFS), is structural framing roll-formed from thin, high-strength galvanized steel coil into studs, tracks, joists, and trusses. It replaces wood framing in walls, floors, and roofs. It is non-combustible, dimensionally stable, and at Cal Steel it is engineered as a 3D digital twin and panelized in the factory before it ships to the jobsite.
What is the difference between light gauge steel and structural steel?
Light gauge steel is thin cold-formed steel used to frame the building shell: walls, floors, and roofs. Structural steel is heavy hot-rolled steel, such as wide-flange beams, columns, and HSS tube, used to carry large loads, add stories, and resist lateral and seismic forces. Cal Steel fabricates and erects both, and uses structural steel to reinforce light gauge steel buildings when they go higher or need a lateral system.
Is light gauge steel framing fire-resistant?
Yes. Steel is non-combustible: it does not burn or feed a fire. In California's wildfire and wildland-urban-interface (WUI) zones, non-combustible light gauge steel framing helps a home resist fire, meet code, and stay insurable. It is one reason steel framing is used on fire-rebuild projects in areas like the Palisades and Altadena.
Is steel framing good for California's seismic requirements?
Yes. Steel has a high strength-to-weight ratio and is dimensionally stable, which suits seismic design. Light gauge steel buildings are engineered for California seismic loads, and where a project needs additional lateral capacity, Cal Steel adds structural steel beams, columns, and braced or moment frames with AWS D1.1 certified welding.
How much faster is light gauge steel construction than wood?
Because panels are pre-assembled in a controlled factory and erected on site, the structural shell can go up in days rather than weeks, and panelization can cut field labor by up to roughly 50 percent. Volumetric modular construction can compress overall build time by 30 to 50 percent versus conventional site building because modules are built in parallel with the foundation and sitework.
What does light gauge steel framing cost compared to wood?
Steel pricing is more stable than lumber, which removes much of the budget volatility of wood. Panelized light gauge steel reduces field labor and waste, and volumetric modular can lower total cost by roughly 20 to 40 percent versus conventional construction. The right comparison is total delivered cost, schedule, labor, waste, and insurability, not just material price per pound.
What is panelized construction?
Panelized construction pre-assembles wall, floor, and roof panels in a factory, then ships them flat to the jobsite where crews erect them. Cal Steel roll-forms the steel from master coil, panelizes the assemblies in its facility, and erects them on site, which improves accuracy and speed versus framing stick-by-stick in the field.
What is volumetric modular construction?
Volumetric modular construction builds complete three-dimensional modules, with floors, walls, MEP, and finishes, in a factory, then delivers and cranes them onto a prepared foundation. Most of the building is finished before it reaches the site, so modules are set in days. Cal Steel builds steel-framed volumetric modules for single-family homes and larger multi-unit projects.
Can light gauge steel be used for multi-story and mid-rise buildings?
Yes. Load-bearing light gauge steel is used for multi-story residential, hotels, and senior housing, often over a concrete podium, and is reinforced with structural steel where needed. Non-combustible framing can also unlock higher construction types than wood, which can add height, area, and units. Verify the construction type per jurisdiction.
What types of projects does Cal Steel build?
Single and multi-family homes, ADUs, fire-rebuild housing, infill and developer projects, hotels and senior living, affordable and public-sector housing, and commercial and institutional structures. Cal Steel serves both its own platform projects and outside builders, general contractors, and developers.
Where does Cal Steel operate?
Cal Steel Group fabricates in a 100,000 square foot facility in Van Nuys, California, with additional manufacturing in Tecate, Baja California, and serves projects across Southern California. It is a Los Angeles City Approved fabricator and erector.
Does Cal Steel both fabricate and erect, or just supply panels?
Both. Cal Steel owns the production line from master coil through finished panels and modules, and its own ironworkers and field crews erect and frame on site. It is not a panel-only supplier, which keeps engineering, fabrication, and field execution under one accountable team.
What certifications and standards does Cal Steel work to?
Cal Steel is a Los Angeles City Approved fabricator and erector, welds to AWS D1.1, engineers in Vertex BD with AutoCAD and Revit BIM integration, and works to ICC-ES certified (ESR-4905) light gauge steel code compliance.
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