Quick Answer: California’s Natural Hazard Disclosure (NHD) law requires most home sellers to tell buyers, in writing, whether a property sits within one or more government-mapped hazard zones for flooding, dam inundation, wildfire, or earthquake risk. The disclosure is typically delivered on a standardized Natural Hazard Disclosure Statement, often prepared by a third-party NHD company hired by the seller or listing agent, and it must reach the buyer before the sale closes. A buyer who receives it late generally gets a short window to cancel, and a seller who withholds known hazard information can face liability even after closing.
What Is California’s Natural Hazard Disclosure Law?
If you’ve bought or sold a home in California, you’ve probably seen a form labeled “Natural Hazard Disclosure Statement,” usually shortened to “NHD.” This isn’t just another piece of paperwork for the file — it’s a specific, statutory requirement under California Civil Code Section 1103 and the group of sections that follow it. The law exists because California’s terrain and climate create real, mappable hazards: flood-prone low points, dam-adjacent canyons, fire-prone foothills, and active earthquake faults. Rather than leaving buyers to guess, state law built a system that requires sellers to check a property’s location against a specific set of government hazard maps and pass along what they find, in writing, before the sale closes.
As a Burbank-based agent who spent years practicing law before getting into real estate, I get a lot of questions about what this disclosure actually covers, who’s responsible if something gets missed, and whether living near the hills or a fault line means a deal is doomed. Short answer: almost never. Here’s how the requirement actually works, and why it matters more than usual in our part of Los Angeles County.
Which Hazard Zones Does the NHD Statement Cover?
The Natural Hazard Disclosure Statement is built around six specific hazard categories defined in state law. Each one is tied to maps produced by a different government agency, which is part of why most sellers hire a natural hazard disclosure company to research all six rather than trying to piece it together on their own.
| Hazard Zone | What It Means | Who Maps It |
|---|---|---|
| Special Flood Hazard Area | An area with roughly a 1% annual chance of flooding, commonly called the “100-year floodplain.” Lenders often require flood insurance here on federally backed loans. | Federal Emergency Management Agency (FEMA) |
| Dam Inundation Area | Land that could flood if a dam upstream were to fail. | Local emergency services and county agencies, using state-reviewed inundation maps |
| Very High Fire Hazard Severity Zone | The state’s top wildfire-risk classification, based on vegetation, terrain, and typical fire weather. | CAL FIRE (state land) or the local fire authority (inside city limits) |
| State Responsibility Area (Wildland Fire Zone) | Land where CAL FIRE, rather than a local fire department, holds primary wildfire-suppression responsibility. | CAL FIRE |
| Earthquake Fault Zone | A zone surrounding a mapped active fault where surface rupture is possible; stricter building setback rules apply to new construction here. | California Geological Survey, under the Alquist-Priolo Act |
| Seismic Hazard Zone | An area at elevated risk of earthquake-triggered landslide or liquefaction. | California Geological Survey, under the Seismic Hazards Mapping Act |
Every one of these is a factual, map-based determination, not a judgment call about how risky a neighborhood feels. A property is either inside a mapped boundary or it isn’t, and the NHD report simply documents the answer for each of the six categories.
Who Is Responsible for Providing the NHD Disclosure?
The seller is legally responsible for making sure the NHD statement reaches the buyer. In practice, that almost always means the seller, usually through the listing agent, hires a third-party disclosure company to research the property against all six hazard maps and produce the standardized report. Agents on both sides play a role too: the listing agent has a duty to pass along hazard information they actually know about or that appears on publicly posted maps, and the buyer’s agent has a duty to transmit what they receive with ordinary care.
California law gives sellers, agents, and the natural hazard experts they hire some protection here. When they rely in good faith on information from a public agency or a qualified professional, use reasonable care, and don’t personally know about an error, they generally aren’t held liable simply because a map turns out to be outdated or a report contains a mistake. That protection disappears, though, the moment a seller or agent has actual, personal knowledge of a hazard and stays quiet about it.
When Does the Seller Have to Deliver It?
State law requires delivery “as soon as practicable” before the transfer of title. In real-world escrow terms, that means the NHD statement typically goes out early in the transaction, packaged with the seller’s other required disclosures, well ahead of closing. If it arrives late, after the buyer has already signed a purchase agreement, or if the seller has to materially revise it afterward, the buyer generally gets a short statutory window to walk away from the deal — commonly three days to cancel in writing if the revised disclosure is delivered in person, or five days if it’s sent by mail. That cancellation right has real teeth, and it’s a big part of why experienced agents push to get the NHD report ordered and delivered as early as possible.
Does Being in a Hazard Zone Mean a Sale Is in Trouble?
Not at all, and this is the point I probably explain most often. Sitting inside one or more of these six hazard zones does not make a property unsellable, uninsurable, or legally defective. Across hillside and foothill communities in the greater Los Angeles area, it’s common for a home to fall within a Very High Fire Hazard Severity Zone, a State Responsibility Area, or an earthquake-related zone, sometimes more than one at once. The law isn’t a prohibition; it’s a transparency requirement. What it does mean is that buyers should factor the disclosure into their decision-making — checking on flood insurance requirements, asking about wildfire hardening or defensible space, or simply understanding the seismic setting of a neighborhood — rather than being surprised by it after closing.
What Happens If the NHD Statement Isn’t Provided, or Turns Out to Be Wrong?
If a seller simply fails to provide the NHD statement, or provides one that’s inaccurate because of information they personally knew and didn’t disclose, they can be exposed to a buyer’s claim for actual damages tied to that hazard — the cost of flood insurance they weren’t expecting, for example, or expenses connected to a fire or seismic risk they weren’t told about. It’s also worth knowing that this statute doesn’t exist in a vacuum. California law separately imposes a broader duty on sellers to disclose known material facts that affect a property’s value or desirability, and that general obligation keeps applying even in situations where the NHD requirement itself doesn’t. In other words, “the transaction was technically exempt from the NHD statute” isn’t a shield for hiding something a seller actually knew about.
Are Any Transactions Exempt from the NHD Requirement?
Yes. The statute carves out a handful of transfer types where the standard NHD process doesn’t apply, similar to the exemptions built into California’s general seller-disclosure rules. These commonly include transfers ordered by a court, such as probate or bankruptcy proceedings; certain foreclosure-related transfers; transfers between co-owners; transfers to a spouse or registered domestic partner as part of a divorce or legal separation; and transfers to or from certain government entities. If you think your transaction might fall into one of these categories, that’s a good question to run by your agent or a real estate attorney early, rather than assuming.
Why This Matters for Buyers and Sellers in Burbank, Glendale, Pasadena, and the San Gabriel Valley
This isn’t an abstract statute for anyone shopping the hillside neighborhoods of our area. Communities that back up to the Verdugo Mountains, the San Gabriel Mountains, or the edge of the Angeles National Forest — think parts of Burbank near Wildwood Canyon, Glendale’s Verdugo foothills, La Cañada Flintridge, La Crescenta, Altadena, Sierra Madre, and the upper reaches of Pasadena — frequently sit within a Very High Fire Hazard Severity Zone or a State Responsibility Area. The Eaton Fire, which broke out in the Eaton Canyon foothills near Altadena and Pasadena in January 2025, was a stark reminder of exactly why this disclosure category exists in our part of Los Angeles County.
Earthquake-related disclosures matter here too. The Raymond Fault runs beneath parts of Pasadena and San Marino, and the Sierra Madre Fault Zone traces the base of the San Gabriel Mountains along several San Gabriel Valley communities — both are the kind of mapped, active faults the Alquist-Priolo Act was built around. That doesn’t mean every home near the foothills sits inside a designated Earthquake Fault Zone, but it does mean buyers and sellers in this area should expect the NHD report to be a substantive document worth reading, not a rubber-stamped formality.
My advice to sellers: order your NHD report early in the listing process so there are no surprises, or last-minute cancellation rights, once you’re in escrow. My advice to buyers: read the report closely, ask your agent and your insurance provider what each checked box actually means for your situation, and use it as one more tool for understanding the property you’re about to call home.
Frequently Asked Questions
What’s the difference between the NHD statement and the Transfer Disclosure Statement (TDS)?
The NHD statement is a narrow, six-category disclosure built entirely around government hazard maps covering flood, dam inundation, fire, and earthquake zones. The Transfer Disclosure Statement (TDS) is a much broader form where the seller answers detailed questions about the physical condition of the property itself. Most residential sales in California require both, and the two forms serve different purposes even though they’re often delivered around the same time.
Is a seller required to hire a company to prepare the NHD report?
No, the law doesn’t require using a particular company, and a seller could technically research the maps directly. In practice, most sellers and listing agents hire a third-party natural hazard disclosure company because checking six separate hazard categories against the correct, current maps takes real expertise, and using a qualified professional can also support a good-faith liability defense if an error later turns up.
Does every home sale in California require an NHD disclosure?
Most standard residential sales do, but the statute includes several exemptions, similar to those built into California’s general seller-disclosure rules, such as court-ordered transfers, certain foreclosure-related transfers, transfers between co-owners, and transfers connected to divorce or legal separation. If you’re unsure whether your transaction qualifies for an exemption, confirm it with your agent or a real estate attorney rather than assuming.
My property is in a Very High Fire Hazard Severity Zone. Can I still sell it?
Yes. A Very High Fire Hazard Severity Zone designation is extremely common throughout hillside and foothill communities in the greater Los Angeles area, and it does not prevent a sale. It simply needs to be disclosed accurately so the buyer understands the designation and can plan accordingly for insurance, wildfire hardening, or other considerations.
Does an NHD disclosure affect whether I need flood insurance?
It can. If the NHD statement shows a property sits within a FEMA-designated Special Flood Hazard Area, a lender financing the purchase with a federally backed loan will typically require flood insurance as a condition of the loan. Even outside that requirement, some buyers choose to carry flood coverage once they know a property falls within this zone.
What happens if the seller doesn’t provide the NHD statement at all?
A seller who fails to provide the required disclosure can be exposed to a claim from the buyer for damages connected to the undisclosed hazard. Because this is a statutory requirement, skipping it isn’t simply a paperwork oversight; it’s a legal exposure that can follow a seller well after the sale has closed.
Can a buyer cancel the purchase after receiving the NHD statement?
A buyer generally has the right to cancel if the NHD statement is delivered late, after they’ve already signed a purchase agreement, or if the seller materially changes it afterward. In that situation, the buyer typically has three days to cancel in writing if the disclosure was delivered in person, or five days if it was delivered by mail.
Are earthquake fault zones common in Burbank, Glendale, or Pasadena?
Mapped, active faults do run through parts of the San Gabriel Valley, including the Raymond Fault near Pasadena and San Marino and the Sierra Madre Fault Zone along the base of the San Gabriel Mountains. Not every home in these cities sits inside an officially designated Earthquake Fault Zone, but given the region’s geology, it’s a disclosure category worth reading closely rather than skimming.
Does the NHD report tell me about wildfire defensible space requirements?
The NHD statement itself focuses on whether a property sits within a mapped fire hazard zone, not on the specific defensible-space rules that apply once it does. If a property falls within a Very High Fire Hazard Severity Zone or State Responsibility Area, the local fire authority or CAL FIRE is the right resource for the brush-clearance and home-hardening requirements tied to that designation.
Who actually creates the maps used in the NHD report?
Each hazard category is mapped by a different agency: FEMA for flood zones, CAL FIRE for fire hazard severity and wildland responsibility areas, the California Geological Survey for earthquake fault zones and seismic hazard zones, and local or county emergency services agencies for dam inundation areas. The NHD report compiles results from all of these sources into one standardized document.
This article is general information about California’s Natural Hazard Disclosure requirements and is not legal advice. Disclosure obligations can be updated by the state, so confirm current requirements with a licensed real estate professional or attorney before relying on them.
About Will Flannigan
Will Flannigan is a California licensed real estate agent (DRE #01951292) and Certified Trust & Probate Specialist (CTPS) with The Nell Team at Equity Union Real Estate. A former attorney, Will brings a background in property management and over a dozen home flips to every transaction, and has been licensed since 2014. A 20+ year resident of Burbank Rancho, Will specializes in Burbank, Altadena, Pasadena, Glendale, and the greater San Gabriel Valley, with fluency in Mandarin serving clients in San Marino and beyond.
Have questions about a Natural Hazard Disclosure report on a home you’re buying or selling? I’m happy to walk through it with you.
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