Security Deposits

Can a landlord increase the deposit after move-in?

South Dakota rental guidance and tenant-landlord operational information.
Published February 28, 2026 State-specific rental guidance Update This Question
Reviewed by Tenants & Landlords Editorial Team

This rental guidance was reviewed by the Tenants & Landlords Intelligence Team, specializing in lease agreements, notices, rent disputes, deposits, evictions, and tenant-landlord operational procedures.

Asked 94 days ago · South Dakota

South Dakota Tenant Guidance: Can a Landlord Increase the Security Deposit After Move-In?

Understanding your rights and responsibilities as a tenant in South Dakota regarding security deposits is vital to maintaining a good rental relationship and protecting your financial interests. One common question South Dakota tenants often ask is whether a landlord can increase the security deposit after you have already moved into the rental property. This guidance will clarify the law and best practices concerning security deposit increases in South Dakota.

Security Deposits Under South Dakota Law

In South Dakota, security deposits serve as financial protection for landlords against potential damages to the rental unit, unpaid rent, or other lease violations. The rules governing security deposits are outlined in Chapter 43-32 of the South Dakota Codified Laws, which set forth the landlord and tenant responsibilities.

Key Provisions Related to Security Deposits:

  • Maximum deposit amount: South Dakota law does not specify a statutory maximum amount that landlords can charge for security deposits.
  • Documentation obligation: Landlords must provide a written itemized list of damages claimed against a security deposit within 14 days after the tenant vacates.
  • Deposit return timeline: The deposit or a written explanation of withheld amounts must be returned typically within 14 days after tenant moves out.
However, the South Dakota statutes are less explicit regarding changes to the security deposit once the tenant has taken possession of the rental unit.

Can a Landlord Increase the Security Deposit After Move-In?

General Rule

  • No automatic right to increase deposit mid-lease: Under typical lease agreements and standard landlord-tenant practices in South Dakota, landlords cannot unilaterally increase the security deposit after move-in during an active lease term.
  • The amount of the security deposit is usually set at the time the lease is signed and after the tenant moves in, it remains fixed for the duration of that lease unless otherwise agreed upon.

When Can a Security Deposit Increase Occur?

  • Lease renewal or new lease agreement: If the landlord wishes to increase the security deposit, it generally must occur when the lease is up for renewal or a new lease is being negotiated. At that point, the landlord can propose a higher security deposit amount as part of the terms for continuing tenancy.
  • Amendments with tenant consent: If the landlord and tenant mutually agree during the lease term to amend the agreement to increase the deposit, such as in response to changes in circumstances (e.g., additional roommates moving in), this must be in writing and signed by both parties.
  • Additional deposits may be requested for new occupancy: Some landlords may request additional deposits if new occupants are added to the rental property mid-lease, but again, this requires tenant consent.

Without Tenant Consent

  • A landlord does not have the legal authority to demand an increased security deposit mid-lease without tenant consent. Doing so could be considered a lease violation or unlawful demand.

Practical Considerations

  • If a landlord attempts to increase the security deposit after move-in without your consent, tenants in South Dakota can:
- Review their lease carefully to confirm terms related to deposits. - Communicate with the landlord to clarify and negotiate. - Seek assistance or mediation through South Dakota tenant advocacy organizations if disputes arise. - Understand that withholding rent or other remedies are not advisable without legal consultation.

Summary for South Dakota Tenants

AspectInformation
Can the deposit be increased after move-in?Not without tenant consent; generally no during an active lease term.
When can increases be imposed?At lease renewal or new lease signing, or by written amendment signed by tenant and landlord.
Tenant's rightsTo refuse deposit increase during lease, request written agreement for changes, dispute unlawful demands.

Best Practices for Tenants in South Dakota

  • Review your lease agreement carefully: Know what it specifies about security deposits, including any clauses on adjustments or increases.
  • Keep communications in writing: If a landlord discusses increasing your security deposit, request written notice and documentation for your records.
  • Do not pay an increased deposit without agreement: Only remit additional deposit funds if you agree in writing to the new terms.
  • Maintain good records: Keep copies of your lease, all written communications, and payment receipts.
  • Understand your rights: Familiarize yourself with South Dakota landlord-tenant laws which can be found on official state websites or through tenant resource centers.

Conclusion

In South Dakota, a landlord cannot unilaterally increase a security deposit after you have moved into the rental unit. Any increase must occur at lease renewal or through a written agreement between you and your landlord during the tenancy. By understanding these provisions and maintaining open communication, tenants can protect themselves from unlawful demands and foster a healthy landlord-tenant relationship.

If you ever face a situation where your landlord attempts to increase your security deposit mid-lease without your agreement, consider seeking legal advice or contacting local tenant advocacy organizations for assistance.

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