# Steel Framing and Insurance in California: What One 2026 Quote Shows

> During construction, it can. Builder's risk, the policy that covers a house while it is being built, is priced partly by construction class: in one October 2026 quote for a steel-framed Los Angeles County rebuild, the same coverage priced about 40% lower in the fire-resistive class than in the wood-frame class. Which class a steel frame gets is up to the insurer, and the homeowners policy you buy after the build is a separate policy.

Source page: https://apbmetalstudbuilders.com/learn/steel-frame-house-insurance-california
Publisher: APB Inc. (CSLB #951030)
Last updated: 2026-11-02

"Will a steel frame make my house cheaper to insure?" is one of the first questions we hear from people rebuilding after the Eaton and Palisades fires. Until recently the honest answer was "we don't know". We now have a real quote for one part of the question, and a clear "it depends" for the rest.

**In short:** the insurance that covers a house while it is being built, called builder's risk, is priced partly by construction class. When one rebuild planned in steel was quoted in October 2026, the fire-resistive version of the same policy came in about 40% below the wood-frame version. Who decides the class is the insurer, not the builder. And none of this is about the homeowners policy you buy after you move in.

## What did the 2026 quote show?

In October 2026, a broker priced residential builder's risk for a Los Angeles County fire rebuild: a house and its ADU, both planned in steel. A California-admitted insurer quoted each building twice, once in the frame class and once in the fire-resistive class. Nothing else moved between the two versions: not the limits, not the deductible, not the 12-month term, not the list of additional coverages.

| Line of the quote | Frame class | Fire-resistive class |
|---|---|---|
| Base rate for the same coverage | Baseline | About 43% lower |
| Total premium, the house | Baseline | About 40% lower |
| Total premium, the ADU | Baseline | About 39% lower |
| Flat-priced add-ons (equipment breakdown, sewer backup) | Same | Same |

Most of the difference sits in the base rate. Coverages that are priced off the base rate, such as soft costs and expediting expenses, fell by about the same share. The flat-priced add-ons didn't change at all, which is why the total lands near 40% rather than 43%.

**What this does not show.** It is one quote, from one insurer, on one date, for one site. It is not a rate you can expect for your own project, and it is not a promise of anything. The two class names come from how the broker labeled the versions; the insurer still has to confirm which class it will actually give a steel frame.

## Why does construction class change the price?

Property insurers group buildings by how they are built. The usual scale runs from Frame (class 1) through Joisted Masonry, Non-Combustible, Masonry Non-Combustible and Modified Fire Resistive to Fire Resistive (class 6). Frame means combustible framing, such as wood. US Assure, an agency that writes builder's risk, notes that steel is the most common noncombustible material, and that frame projects may face stricter eligibility guidelines and pricing.

Picture the job site and the logic is plain. An open wood frame is months of dry fuel standing in the air, before drywall, before sprinklers, often on a street where nobody lives yet. Steel studs, floor joists and roof framing are noncombustible: they add no fuel. Builder's risk covers exactly that exposed stretch, so that is where the class weighs most.

## Which class will a steel frame get?

That depends on the insurer and on the details of the house. Light-gauge steel can land in different classes because:

- **Every insurer has its own manual.** Some programs only split frame from non-frame; others use all six classes.
- **Not every part is steel.** Wood sheathing, a wood subfloor or a wood roof deck over steel framing can change how an underwriter classes the building.
- **Fire ratings belong to assemblies.** The upper classes depend on the rated fire resistance of the wall, floor and roof assemblies, which comes from layers such as gypsum board, not from the studs alone.
- **The stage counts.** Underwriters look at the building as it will stand during construction, not only as it will be when it's finished.

The practical move is simple. Ask your broker to quote both classes, and to put in writing which class the insurer will give your steel frame, before you bind.

## Is builder's risk the same as homeowners insurance?

No. Builder's risk is property insurance for a project under construction. The 2026 quotes we reviewed covered the structure plus items such as debris removal, materials in storage or in transit, the extra cost of meeting newer codes after a loss, and soft costs after a covered delay. Coverage runs for the construction term and ends with the project. It doesn't include liability or workers' compensation, and it doesn't cover the finished, lived-in house.

When the house is done, you need a homeowners policy, and that is priced on different things: your address and its wildfire risk, the mitigation features of the house, and each carrier's own rating plan.

## Will steel framing lower homeowners insurance?

Not automatically. As of November 2026 we have not found a California insurer, or the California Department of Insurance, publishing a homeowners discount for steel framing.

What California does have is Safer from Wildfires, the Department of Insurance's list of mitigation steps that insurers are expected to recognize with discounts:

- a Class A fire-rated roof
- a 5-foot ember-resistant zone, fencing included
- ember- and fire-resistant vents
- 6 inches of noncombustible material at the base of exterior walls
- enclosed eaves
- upgraded windows
- cleared space under decks
- sheds and outbuildings moved at least 30 feet away
- defensible space
- community programs such as Firewise USA

Framing material is not on the list. A steel-framed house can check every item, and so can a wood-framed one. When you talk to a homeowners carrier, ask how it rates a steel-framed house, and which of these discounts apply at your address.

## What did the 2025 Los Angeles fires show?

IBHS surveyed more than 250 properties after the 2025 fires. Homes with all four of a Class A roof, noncombustible siding, dual-pane windows and enclosed eaves had a 54% likelihood of avoiding damage; homes with only one of them, 36%. Where fuel covered more than 25% of the first five feet around a house, the risk of damage or destruction rose to nearly 90%.

Those are correlations from a field survey, not controlled tests. We know of no study of those fires that compares steel-framed homes with wood-framed ones, so we make no claim about how steel-framed homes fared. For insurance, as for safety, the lesson is the whole envelope. More in [steel framing for wildfire rebuilds](/learn/steel-framing-wildfire-rebuild).

## What should you ask your broker?

- Please quote builder's risk in the frame class and in the class you'd give my steel frame, with the same limits, deductible and term.
- Which construction class will my light-gauge steel frame get? Can you confirm it in writing before we bind?
- Does wood sheathing, a wood subfloor or a wood roof deck change that class?
- What does the policy exclude, and can I read the coverage form?
- Who buys the policy, me or my contractor, and are my contractor and lender named on it?
- When does coverage end, and can it be extended if the build runs long?
- For the finished house: how do you rate a steel-framed home, and which Safer from Wildfires discounts apply at my address?
- Do you recognize the IBHS Wildfire Prepared Home designation for new construction?

## Where APB fits

APB Inc. frames the walls, floor joists and roof of homes in light-gauge steel (CSLB #951030 · first issued 2010). A California-licensed engineer stamps the structural drawings and calculations. APB coordinates the engineering: we're the framing contractor, not an engineering firm. The stamped drawings and our framing specifications are what an underwriter looks at to class the building, and we can share them with your broker for the quote.

We are not an insurance agent. We don't sell, place or recommend insurance, and the insurer alone sets the class and the price.

Building a home and an ADU? We frame both. [Send your plans](/contact), or if you don't have plans yet, [start here](/start-without-plans): we coordinate the drawings with a licensed designer and a California-licensed engineer, drawn in steel from the start. It takes longer, and we tell you how it fits your timeline up front.

## Common questions

### Is a steel-framed house cheaper to insure?

During construction it can be, because builder's risk is priced partly by construction class. In one October 2026 builder's-risk quote for a steel-framed Los Angeles County rebuild, the fire-resistive class cost about 40% less than wood frame for the same coverage. One quote is not a rule: each insurer decides which class a steel frame gets, so have your broker price both.

### Does steel framing lower homeowners insurance in California?

Not by itself, as far as we have found. Builder's risk ends with the build; the homeowners policy on the finished house is priced on your address, its wildfire exposure and each carrier's own rating plan. California's Safer from Wildfires program lists the upgrades that earn discounts, such as a Class A roof, ember- and fire-resistant vents, enclosed eaves and a 5-foot ember-resistant zone, and framing material is not among them. Ask each carrier how it rates a steel frame.

### What should I ask my insurance broker about a steel frame?

Ask for two builder's-risk quotes on the same limits, deductible and term: one in the frame class and one in the class the insurer would give your steel frame. Ask whether wood sheathing, a wood subfloor or a wood roof deck changes that class, and get the answer in writing before you bind. For after move-in, ask the homeowners carrier which Safer from Wildfires discounts apply at your address.

### Do insurers class light-gauge steel framing as fire-resistive?

Not always. Underwriters sort buildings into classes that run from frame to fire-resistive, and steel is the most common noncombustible framing material. Wood sheathing or decking, and the fire rating of the wall and roof assemblies, can still move a steel-framed house to a different class, and each insurer follows its own manual. That is why the class belongs in writing.

### What is builder's risk insurance?

Property insurance for a building while it is under construction. The 2026 quotes we reviewed covered the structure, plus items such as debris removal, materials in storage or in transit, and soft costs after a covered delay, for a 12-month term. The policy ends with the project; it is not liability cover and it is not a homeowners policy.

## Sources

- [California Department of Insurance: Safer from Wildfires](https://www.insurance.ca.gov/01-consumers/200-wrr/safer-from-wildfires.cfm)
- [US Assure: Classifying 6 construction materials for builder's risk](https://usassure.com/resources/articles/classifying-6-construction-materials-for-builders-risk)
- [IBHS: Findings on LA County's Palisades and Eaton fires (Dec. 10, 2025)](https://ibhs.org/ibhs-news-releases/ibhs-findings-on-la-countys-palisades-and-eaton-fires/)
- [CSLB: Check a License](https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx)