Key Takeaways

  • Missouri does not mandate specific promulgated contract forms like some states
  • Real estate associations provide standard contract forms for member use
  • Licensees should not draft contract language—refer clients to attorneys for legal provisions
  • Addenda are used to modify or supplement the main contract
  • All contract changes should be initialed by all parties
Last updated: January 2026

Missouri Contract Forms and Addenda

Missouri does not require the use of specific promulgated contract forms like some states. However, standard forms are commonly used in practice.

Contract Form Sources

Real Estate Association Forms

Standard contract forms are typically provided by:

SourceUse
Missouri REALTORSMember associations
Local associationsRegional customization
BrokeragesCompany-specific forms

Form Usage

Form TypePurpose
Residential Sales ContractStandard home purchase
Commercial ContractBusiness property sales
Vacant Land ContractUnimproved property
Lease AgreementRental properties

Licensee Limitations

What Licensees CAN Do

ActionExample
Fill in blanksNames, dates, prices
Check boxesSelect options
Use standard formsApproved contracts
Add factual informationProperty descriptions

What Licensees CANNOT Do

Prohibited ActionReason
Draft legal languageUnauthorized practice of law
Modify printed termsLegal document alteration
Give legal adviceNot licensed attorney
Interpret contract provisionsLegal opinion

Exam Tip: When in doubt, refer clients to an attorney. Drafting legal provisions constitutes unauthorized practice of law.

Using Addenda

Addenda are additional forms that supplement or modify the main contract.

Common Addenda

AddendumPurpose
Financing ContingencyLoan approval terms
Inspection ContingencyProperty inspection rights
Sale of Other PropertyContingent on selling current home
Seller DisclosureProperty condition disclosure
Lead-Based PaintRequired for pre-1978 homes
HOA/CondoAssociation requirements

Addendum Requirements

RequirementDetails
Reference in contractMust be listed or checked
Signed by all partiesSame as main contract
DatedWhen executed
AttachedBecome part of contract

When Addenda Conflict

PrincipleEffect
Addenda supersedeAddendum terms override contract
Later prevailsMost recent change controls
Specifics prevailSpecific terms override general

Amendments

Purpose

Amendments change an existing contract:

Use Amendment ForExample
Changing termsNew closing date
Correcting errorsFix address
Adding provisionsNew contingency
Removing termsWaive contingency

Amendment Requirements

RequirementDetails
Written formMust be in writing
Both parties signMutual agreement
Reference originalIdentify contract
Specific changesClear modifications

Key Point: Oral amendments to real estate contracts are generally NOT enforceable under the Statute of Frauds.

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Contract Forms and Addenda
Test Your Knowledge

What should a Missouri licensee do when a client asks for a custom contract provision?

A
B
C
D
Test Your Knowledge

When an addendum conflicts with the main contract, which takes precedence?

A
B
C
D