Key Takeaways

  • The Natural Hazard Disclosure (NHD) is required under California Civil Code Section 1103 for 1-4 unit residential sales
  • NHD covers six statutory hazard zones: flood, dam inundation, very high fire severity, wildland fire, earthquake fault, and seismic hazard
  • Sellers typically use third-party NHD report companies to compile accurate hazard zone information
  • Agents can rely on third-party NHD reports for protection from liability if the report is negligently prepared
  • The statutory NHD does not cover all environmental hazards—additional disclosures may be required
Last updated: January 2026

Natural Hazard Disclosure (NHD)

The Natural Hazard Disclosure (NHD) Statement informs buyers if a property is located within specific natural hazard zones. It is required by California Civil Code Section 1103.

Six Statutory Hazard Zones

The NHD must disclose whether the property is in any of these six zones:

Hazard ZoneGoverning AgencyWhat It Means
Special Flood Hazard AreaFEMA1% annual chance of flooding (100-year flood)
Area of Potential FloodingState OESDam failure inundation zone
Very High Fire Hazard Severity ZoneCAL FIRE (SRA)State-designated wildfire risk areas
Wildland-Urban Interface Fire AreaLocal Fire (LRA)Local-designated fire hazard areas
Earthquake Fault ZoneCA Geological SurveyNear known active earthquake faults
Seismic Hazard ZoneCA Geological SurveyLiquefaction or landslide risk

Key Terms

  • SRA = State Responsibility Area (CAL FIRE jurisdiction)
  • LRA = Local Responsibility Area (local fire department)
  • FEMA = Federal Emergency Management Agency

How NHD Information is Obtained

Sellers and agents typically use third-party NHD report companies to determine hazard zone status:

MethodDescription
NHD Report CompanyProfessional service that researches all hazard zones
Government MapsOfficial maps from FEMA, CAL FIRE, CGS
County RecordsLocal hazard zone designations

Benefits of Third-Party Reports

  1. Accuracy - Professional research using current maps
  2. Liability protection - Transfer of liability to report company
  3. Convenience - All six hazard zones in one report
  4. Updates - Reports reflect current zone designations

Important: Agents who rely on third-party NHD reports are protected from liability if the report is negligently prepared, as long as the agent acted in good faith.

Additional Environmental Disclosures

The statutory NHD covers only six hazard zones. Additional disclosures may be required for:

HazardDisclosure
Airport proximityAirport influence area disclosure
Military ordnanceFormer military ordnance location
Mining operationsNotice of mining operations
Industrial useNotice of industrial zone
Mello-RoosSpecial tax district disclosure

NHD Delivery Requirements

Like the TDS, the NHD must be delivered as soon as practicable before transfer of title.

Timing Rules

Delivery MethodBuyer's Rescission Period
In person3 days
By mail5 days

Who Must Provide NHD

The seller is responsible for providing the NHD. However:

  • The listing agent typically orders the NHD report
  • Third-party companies deliver reports to all parties
  • Agents assist with the disclosure process

Flood Zone Implications

If a property is in a Special Flood Hazard Area (Zone A or V):

  1. Flood insurance is required if there is a federally-related mortgage
  2. Disclosure must be made to buyer
  3. Flood zone determination must be obtained before closing
  4. Insurance cost can significantly affect affordability

Flood Zone Designations

ZoneMeaningInsurance Required?
Zone A100-year flood plainYes (federally-backed loan)
Zone VCoastal flood with wavesYes (federally-backed loan)
Zone XModerate to low riskUsually not required
Zone BModerate riskUsually not required

Fire Zone Implications

Properties in Very High Fire Hazard Severity Zones face:

  1. Defensible space requirements (vegetation clearance)
  2. Building standards for fire resistance
  3. Insurance challenges in high-risk areas
  4. Disclosure to buyers of fire risk

California's Defensible Space Law

Property owners in fire hazard zones must:

  • Maintain 100 feet of defensible space around structures
  • Clear vegetation within Zone 1 (0-30 feet from structure)
  • Reduce fuel load in Zone 2 (30-100 feet from structure)

Earthquake Zone Disclosures

Properties in Earthquake Fault Zones or Seismic Hazard Zones require disclosure of:

  • Fault Zone - Within 500 feet of known active fault
  • Liquefaction Zone - Soil may lose stability during shaking
  • Landslide Zone - Potential for earthquake-induced landslide

Buyer's Right to Investigation

Buyers have the right to:

  • Obtain professional geologic or soil reports
  • Review fault zone maps
  • Investigate foundation and structural concerns
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Six Statutory Natural Hazard Zones
Test Your Knowledge

How many statutory hazard zones are covered by the California Natural Hazard Disclosure?

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Test Your Knowledge

When is flood insurance required for a property in California?

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