What Is an NHD Report?

NHD meaning: Natural Hazard Disclosure

NHD stands for Natural Hazard Disclosure. An NHD report is the standardized document used in California real estate transactions to tell a buyer which government-mapped natural hazard zones affect the property they are purchasing — flood zones, fire zones, earthquake fault zones, seismic hazard zones, dam inundation areas, and more.

California Civil Code §1103 requires the seller to make that disclosure before the sale closes. The NHD report is how it gets made: a third-party provider researches the property's location against state and federal hazard maps and produces a report that the buyer and seller both sign.

A useful way to think about it — a home inspection tells you the condition of the house; an NHD report tells you the condition of the land it sits on. For the longer explainer, see our guide to the Natural Hazard Disclosure report.

What's inside an NHD report

A Verity NHD report runs 11 statutory hazard determinations, plus environmental database searches, tax assessment data, and property maps. The statutory determinations include:

• FEMA Special Flood Hazard Area — whether the property sits in a 100-year flood zone, which also drives flood insurance requirements.
• Area of potential flooding (dam inundation) — the zone that would be affected by failure of an upstream dam.
• Very High Fire Hazard Severity Zone — CAL FIRE's elevated-wildfire-risk designation, which triggers defensible space and fire hardening obligations. See our guide to fire hazard severity zones.
• Wildland fire area (State Responsibility Area) — land where the state, not the local district, carries primary wildfire protection responsibility.
• Earthquake fault zone (Alquist-Priolo) — mapped surface-rupture zones from the California Geological Survey, covered in our guide to earthquake fault lines.
• Seismic hazard zone — mapped liquefaction and earthquake-induced landslide areas; see seismic hazard zones.
• Statutory notices — Mello-Roos and 1915 Bond special assessments, former military ordnance areas, airport influence areas, right-to-farm, and the sex offender database notice.

On top of the statutory set, Verity NHD screens five environmental databases for nearby contamination plumes, underground storage tanks, and hazardous waste sites — coverage §1103 does not require, but that California buyers increasingly expect.

Who needs an NHD report

California sellers do. Civil Code §1103 applies to transfers of residential property with one to four units, which covers single-family homes, condos, townhomes, and small multi-family buildings. The seller is the disclosing party, so the seller — usually through the listing agent or escrow — is the one who needs the report.

Exemptions are narrow: court-ordered transfers such as probate and foreclosure sales, transfers to or from a government entity, certain transfers between co-owners, and some fiduciary transfers. If a property is being sold on the open market, assume the report is required. Our California disclosure requirements guide covers how the NHD fits with the TDS and the rest of the packet.

When it's ordered — and how long it takes

Most NHD reports are ordered right after offer acceptance, once escrow opens, so the disclosure packet can go out inside the buyer's contingency period. Many listing agents order earlier, at the listing stage, so hazard facts are known before offers arrive.

Turnaround is where providers differ most. Legacy vendors commonly take one to three business days. Verity NHD queries live government hazard data and returns a completed report in minutes, then routes it for signature the same session. See who typically places the order in who orders the NHD report.

What Verity NHD adds beyond the standard report

• Verity AI℠ compliance summary — a plain-language explanation of what each hazard determination actually means for the property and the transaction, instead of a page of Yes/No checkboxes.
• Bilingual reports — every report is available in English and Spanish at no extra cost.
• ValidaSign℠ eSignature — signature routing to all parties is built in, with no per-envelope fees and no separate signing tool.
• Environmental screening — five environmental databases searched alongside the statutory determinations.

You can see how that stacks up against other California vendors on our NHD provider comparison.

What an NHD report costs

California NHD reports generally run about $54 to $100 depending on provider and coverage tier. Verity NHD's Standard NHD report starts at $74.95, with the AI summary, tax data, and eSignature included at every tier. For a full breakdown, read how much an NHD report costs — and for the payment question, see who pays for the NHD report.

Because the report also carries assessment data, it pairs well with our California property tax calculator for estimating annual taxes, Mello-Roos, and 1915 Bond assessments.