Key Takeaways

  • Montana requires sellers to provide an Owner's Property Disclosure Statement under MCA 70-20-305
  • Disclosure must be provided before a purchase agreement is signed
  • Montana's Mold Disclosure Act requires disclosure of known mold and any testing results
  • Water rights disclosure is critical due to Montana's prior appropriation doctrine (MCA 70-20-201 & 70-20-202)
  • Licensees must disclose any known adverse material facts that concern the property under MCA 37-51-313
Last updated: January 2026

Montana Disclosure Requirements

Montana requires specific disclosures in real estate transactions to protect consumers under Montana Code Annotated.

Agency Relationship Disclosure (MCA 37-51-314)

Timing of Disclosure

A broker or salesperson shall disclose the existence and nature of relevant agency relationships:

  • Seller agent: At the time the listing agreement is executed
  • Buyer agent: At the time the buyer representation agreement is executed
  • All parties: Before any substantive discussions or confidential information is shared

What Must Be Disclosed

InformationRequirement
Agency relationshipWho the licensee represents
Dual agency statusIf representing both parties
Brokerage informationName and address of firm
Written acknowledgmentConsumer should acknowledge receipt

Owner's Property Disclosure Statement (MCA 70-20-305)

Montana requires sellers to provide a written property disclosure statement to buyers.

Timing

The disclosure must be provided before a purchase agreement is signed.

What the Disclosure Covers

CategoryItems
StructureFoundation, roof, walls, floors
SystemsElectrical, plumbing, HVAC
WaterSource, wells, septic, water rights
EnvironmentHazards, flooding, contamination
LegalEasements, zoning, HOA
DefectsKnown material facts and problems

Exemptions from Seller Disclosure (MCA 37-51-402)

ExemptionDescription
New constructionBy builder/contractor who has not occupied
Foreclosure salesSheriff, trustee, or court-ordered sales
Estate/probate salesExecutor, administrator, trustee in bankruptcy
Transfers between co-ownersIncluding immediate family
Divorce settlementsCourt-ordered transfers
Eminent domainGovernment proceedings

Statute of Limitations

Claims related to property disclosures must be made within 3 years of the sale.

Mold Disclosure Act

Montana's Mold Disclosure Act has specific requirements:

What Must Be Disclosed

RequirementDetails
Known moldMust disclose presence of mold if known
Mold testingMust disclose if testing was done
Test resultsMust provide copy of test results to buyer
MitigationMust disclose any follow-up treatment

Timing

Disclosure must be made before or simultaneously with signing the purchase contract.

Water Rights Disclosure (MCA 70-20-201 & 70-20-202)

Water rights disclosure is critical in Montana due to the state's agricultural heritage and water scarcity.

Why Water Rights Matter in Montana

FactorImportance
Agricultural useMany properties have irrigation rights
Prior appropriation"First in time, first in right" doctrine
Separate from landWater rights may be sold separately
Value impactWater rights significantly affect property value

What Must Be Disclosed

Water Rights InformationDisclosure Required
Existence of water rightsYes
Type of water rightsYes (irrigation, domestic, etc.)
Water sourceYes (river, stream, groundwater)
Priority dateYes (if known)
Annual allocationYes (if known)
Whether rights transfer with propertyYes
Easements affecting waterYes
Covenants affecting water useYes

Montana's Prior Appropriation Doctrine

Montana follows the prior appropriation doctrine for water rights:

"First in time, first in right" - The person who first puts water to beneficial use has priority over later users.

TermMeaning
AppropriationTaking water for beneficial use
Priority dateDate when right was established
Beneficial useIrrigation, domestic, stock watering
Senior rightsOlder rights with higher priority
Junior rightsNewer rights with lower priority

Environmental Hazards Disclosure (MCA 75-9-401 & 75-9-402)

Sellers must disclose known environmental hazards:

  • Underground storage tanks
  • Hazardous waste sites
  • Contamination on or near property

Lead-Based Paint Disclosure (Federal)

For homes built before 1978, federal law requires:

RequirementDetails
DisclosureKnown lead-based paint hazards
PamphletEPA pamphlet "Protect Your Family From Lead"
Inspection periodBuyer has 10 days to inspect (waivable)
FormLead-Based Paint Disclosure form

Licensee Disclosure Requirements (MCA 37-51-313)

Real estate licensees have separate disclosure obligations:

DutyRequirement
Adverse material factsMust disclose known facts affecting property
To whomBuyer or buyer's agent
WhenBefore purchase agreement executed

Key Point: A licensee cannot remain silent about known material defects, even if the seller chooses not to disclose.

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Montana Disclosure Requirements
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