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NH · Flood-disclosure law

Does a New Hampshire seller have to disclose flooding?

Effective January 1, 2025 (added by HB1320, 2024), New Hampshire RSA 477:4-a requires the seller or seller's agent, prior to executing any contract for the purchase and sale of real property that includes a building, to give the buyer a written notification covering radon, arsenic, lead, PFAS, and flood, and the buyer must acknowledge receipt by signing. The flood notice is a standardized FEMA-awareness statement rather than a property-specific flood-history disclosure.

New Hampshire at a glance

Flood-specific disclosure

The statute or the state-mandated form has dedicated flood questions — flood-zone status, flood history, prior claims, or flood-insurance history.

DisclosureRequired
Opt-outNone
Corroborated (secondary)· verified June 16, 2026
N.H. Rev. Stat. Ann. § 477:4-a

The 4-card answer

New Hampshire flood-disclosure, decoded

Whether the seller must disclose, what triggers it, the penalties, and any opt-out gotcha — each card cites its source.

Does the seller have to disclose flooding?

Disclosure required

Flood-specific disclosure

Effective January 1, 2025 (added by HB1320, 2024), New Hampshire RSA 477:4-a requires the seller or seller's agent, prior to executing any contract for the purchase and sale of real property that includes a building, to give the buyer a written notification covering radon, arsenic, lead, PFAS, and flood, and the buyer must acknowledge receipt by signing. The flood notice is a standardized FEMA-awareness statement rather than a property-specific flood-history disclosure.

The statute or the state-mandated form has dedicated flood questions — flood-zone status, flood history, prior claims, or flood-insurance history.

N.H. Rev. Stat. Ann. § 477:4-aCorroborated (secondary)· verified June 16, 2026

What triggers the duty

  • Any contract for purchase and sale of an interest in real property that includes a building
  • Notice given before contract execution; buyer signs acknowledgment

Penalties & remedies

RSA 477:4-a expressly provides that the section has no impact on the legal validity of title transferred and creates no liability for the seller or seller's agent for failure to provide the required notification. Practically, there is no statutory penalty or remedy for omission.

Buyer remedy: No statutory remedy for failure to provide the notification; the statute disclaims seller/agent liability and title validity is unaffected. Buyers retain any independent common-law misrepresentation/fraud claims outside this section.

Opt-out gotchas

No statutory opt-out or waiver-for-credit mechanism identified. The disclosure duty (where it exists) cannot simply be bought out.

Research note ▾

RSA 477:4-a flood notice language and the no-liability clause confirmed via codified text and HB1320; effective Jan 1, 2025. Primary gc.nh.gov page repeatedly errored to the fetcher (403/socket-closed), so not directly fetched. The flood portion is a generic FEMA-awareness notice, not a property-specific flood-history disclosure; classified specific-flood because flood is an enumerated statutory notice topic, but note its limited (no-liability) teeth.

Buyer's rights

If you're buying in New Hampshire

Your rights re-framed from the buyer's side, plus a pre-closing checklist that holds in every state.

What New Hampshire law gives you as a buyer

New Hampshire requires a seller disclosure (see the answer cards), so you have a statutory document to rely on — and a remedy if the seller knowingly withheld a material flood fact. No statutory remedy for failure to provide the notification; the statute disclaims seller/agent liability and title validity is unaffected. Buyers retain any independent common-law misrepresentation/fraud claims outside this section.

N.H. Rev. Stat. Ann. § 477:4-a

Your pre-closing checklist (works in every state)

  • Pull a free FEMA flood-zone lookup

    Enter the address on FEMA's Flood Map Service Center to see the property's flood-zone designation (Special Flood Hazard Area = Zone A/V). This is public and free, regardless of what the seller discloses.

    msc.fema.gov ↗

  • Request a CLUE / loss-history report

    A C.L.U.E. (Comprehensive Loss Underwriting Exchange) report shows insurance claims filed on the property in the last ~7 years, including water and flood claims. The current owner can pull theirs free once a year from LexisNexis.

    LexisNexis consumer disclosure ↗

  • Get an independent inspection — ask about water

    Hire your own inspector and specifically flag drainage, grading, sump pumps, and signs of past water intrusion (staining, efflorescence, fresh paint in basements). An inspection contingency protects you if problems surface.

  • Get a flood-insurance quote before you waive contingencies

    Quote NFIP or private flood coverage early. Homeowners' insurance does NOT cover flood damage. A federally backed mortgage on a property in a Special Flood Hazard Area generally requires flood insurance — budget for it.

    floodsmart.gov ↗

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New Hampshire

Does the seller have to disclose flooding?

Disclosure required

Flood-specific disclosure

Effective January 1, 2025 (added by HB1320, 2024), New Hampshire RSA 477:4-a requires the seller or seller's agent, prior to executing any contract for the purchase and sale of real property that includes a building, to give the buyer a written notification covering radon, arsenic, lead, PFAS, and flood, and the buyer must acknowledge receipt by signing. The flood notice is a standardized FEMA-awareness statement rather than a property-specific flood-history disclosure.

The statute or the state-mandated form has dedicated flood questions — flood-zone status, flood history, prior claims, or flood-insurance history.

N.H. Rev. Stat. Ann. § 477:4-aCorroborated (secondary)· verified June 16, 2026

What triggers the duty

  • Any contract for purchase and sale of an interest in real property that includes a building
  • Notice given before contract execution; buyer signs acknowledgment

Penalties & remedies

RSA 477:4-a expressly provides that the section has no impact on the legal validity of title transferred and creates no liability for the seller or seller's agent for failure to provide the required notification. Practically, there is no statutory penalty or remedy for omission.

Buyer remedy: No statutory remedy for failure to provide the notification; the statute disclaims seller/agent liability and title validity is unaffected. Buyers retain any independent common-law misrepresentation/fraud claims outside this section.

Opt-out gotchas

No statutory opt-out or waiver-for-credit mechanism identified. The disclosure duty (where it exists) cannot simply be bought out.

Research note ▾

RSA 477:4-a flood notice language and the no-liability clause confirmed via codified text and HB1320; effective Jan 1, 2025. Primary gc.nh.gov page repeatedly errored to the fetcher (403/socket-closed), so not directly fetched. The flood portion is a generic FEMA-awareness notice, not a property-specific flood-history disclosure; classified specific-flood because flood is an enumerated statutory notice topic, but note its limited (no-liability) teeth.

Summary of New Hampshire law as of June 2026. Not legal advice.

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