South Dakota is not simply a "21 days after move-out" state. The landlord's 21-day duty runs after termination of the tenancy and receipt of your mailing address or delivery instructions.
Act now to protect your deposit
Give your mailing address or delivery instructions in writing and keep proof. This is the step that starts the clean South Dakota deposit timeline after the tenancy ends.
If the landlord keeps any part of the deposit and you want the detailed accounting, request an itemized accounting in writing. The 45-day itemized-accounting rule depends on that request.
What the landlord must do within 21 days
Within 21 days after the tenancy ends and the landlord receives your address or instructions, the landlord must either:
- return the security deposit, or
- provide a written statement showing the specific reason for withholding all or part of it
The separate 45-day accounting rule
South Dakota has a second timing rule. Within 45 days after termination of the tenancy, upon request of the lessee, the landlord must provide an itemized accounting of any deposit withheld.
That means the request matters. If you want the itemized accounting, ask for it clearly and keep proof.
If the landlord misses the rule
If the landlord fails to comply with the South Dakota deposit section, the landlord forfeits all rights to withhold any portion of the deposit. Bad-faith retention or bad-faith failure to provide the required written statement or requested itemized accounting may support punitive damages up to $200.
What to keep
Keep:
- the lease
- deposit payment proof
- tenancy termination date
- proof you returned possession or keys
- the written mailing address or delivery instructions you sent
- proof the landlord received them
- any written itemized-accounting request
- the written statement or accounting, if one was sent
- refund records
- photos, videos, invoices, estimates, and messages about deductions
Sources used for this guide
Source reviewed: April 2026.
The South Dakota Recovery System helps you document delivery instructions, follow up after the 21-day deadline, request itemized accounting, and escalate with the statute when needed.
Get the South Dakota Recovery SystemRelated pages
- South Dakota security deposit demand letter
- South Dakota security deposit law
- South Dakota security deposit statute
- What South Dakota landlords can deduct
Important
This page provides general educational information and is not legal advice.