What Is a Natural Hazard Disclosure Report?

What is an NHD report?

A Natural Hazard Disclosure (NHD) report is a third-party determination of whether a California property sits inside any of the state's statutorily defined natural hazard zones. It is required in nearly every California residential sale under Civil Code § 1103, which obligates the seller to disclose a property's exposure to floods, fire, and seismic risk before the transaction closes.

Rather than asking an agent to research a half-dozen government maps by hand, the NHD report consolidates the mapping analysis into a single document that backs the seller's disclosure statement. The report answers six statutory questions — each a simple YES or NO — that together form the core of the Natural Hazard Disclosure Statement.

The six NHDS zones are the statutory core — but a complete Verity NHD report goes further, adding the additional disclosures California law layers on top: airport influence areas, airport noise, former military ordnance locations, the Cortese hazardous-waste list, and local fire severity zones. That's 11 statutory determinations in every report, plus screening across five environmental databases.

The 11 statutory determinations in every Verity NHD report

Hazard guides: what each zone actually means

Learn about liquefaction, earthquake fault lines, fire hazard severity zones, contamination plumes, and seismic hazard zones.

Every report also carries property tax and assessment data. Estimate your California property taxes with our free property tax calculator.

Who is required to provide an NHD report?

The disclosure duty falls on the seller (the transferor) and their agent. Under Civil Code § 1103, they must deliver a completed Natural Hazard Disclosure Statement to the buyer as part of the seller's broader disclosure package. The NHD report is what makes that statement defensible: it documents the basis for each determination.

The requirement applies to nearly all residential transactions involving one-to-four dwelling units, including most single-family homes, condominiums, and small multi-family buildings.

A limited set of transfers are exempt from the disclosure requirement, including court-ordered transfers, transfers by a trustee in a foreclosure, transfers between co-owners, and certain transfers between spouses or to a living trust. When in doubt, confirm the transaction type before assuming an exemption applies.

Who pays for the NHD report?

By custom, the seller pays for the NHD report, because the report satisfies the seller's statutory disclosure obligation. But payment is negotiable — the Residential Purchase Agreement lets the parties allocate disclosure costs however they agree.

The report is typically ordered by the listing agent, the escrow officer, or the transaction coordinator during the disclosure period, so it is delivered to the buyer well before contingencies are removed. For a deeper look, see Who Pays for the NHD Report in California?

Why professionals always order the report

A professionally prepared NHD report puts a professional provider's documented determination behind every answer on the disclosure statement. If a determination is ever challenged, the provider stands behind the mapping analysis. The agent walks into closing backed by professional-grade documentation.

That's why experienced agents treat the NHD report as standard practice on every transaction: it protects the seller, informs the buyer, and documents that the disclosure duty was met with verified data — not guesswork.

What's included beyond the statutory six?

The six hazards are the legal floor. A complete report usually layers in additional disclosures that matter just as much to a buyer's decision:

• Tax disclosures — Mello-Roos Community Facilities Districts, 1915 Improvement Bond Act assessments, and the supplemental property tax notice.
• Environmental advisories — radon, lead-based paint, asbestos, mold, and former methamphetamine contamination.
• Megan's Law notice — the statutory database notice regarding registered sex offenders.

Verity NHD includes tax data in every tier — so you never place a second order to recover Mello-Roos or bond assessment data — and pairs each report with Verity AI℠, an AI-generated plain-English summary that translates the determinations into language your clients actually understand.

How fast can you get an NHD report?

Traditional providers typically deliver in 24 to 72 hours — a delay that can stall the disclosure period at the worst possible time.

Verity NHD delivers in as little as 60 seconds. Reports generate the moment hazard data resolves, and integrated eSignature lets buyers and sellers sign the disclosure statement without a separate signing tool. You can compare full pricing on the pricing page.

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Frequently asked questions

Common questions, answered in depth

Four short guides cover the questions agents ask most about the Natural Hazard Disclosure report:

Learn more

Go deeper on specific parts of the disclosure process: