South Dakota Mechanics Lien: Filing, Deadlines, and Enforcement

To file a valid mechanic’s lien in South Dakota, you must record a verified lien statement with the register of deeds in the county where the property sits within 120 days after your last day of work or last delivery of materials, and you must first mail a copy of that statement to the property owner by certified or registered mail. Those are the core South Dakota mechanics lien requirements and deadlines; miss either one and the lien is defective. A separate six-year clock then governs how long you have to sue to enforce it.

Who Can File

SDCL 44-9-1 grants lien rights to anyone who furnishes “skill, labor, services, including light, power, or water, equipment, or materials” for the improvement of property, as long as the work was done at the request of the owner, the owner’s authorized representative, or any contractor or subcontractor.¹ That reaches general contractors, subcontractors, sub-subcontractors, material suppliers, equipment rental companies, and utility providers supplying power or water to the site. Subcontractors and suppliers do not need separate statutory authority. What differs by tier are the notice duties triggered when a Notice of Project Commencement is on file.

Eligible projects fall into three categories under the same statute: building work (erecting, altering, repairing, or removing buildings, fixtures, bridges, fences, and related grading, sewers, and conduits); utility infrastructure (railways, telephone, electric, pipelines, and the like); and mining or extraction work on mines, mining claims, oil or gas wells, and springs.

What the Lien Statement Must Contain

SDCL 44-9-16 requires the lien statement to be verified under oath by someone with personal knowledge of the facts.² It must set out:

A statement that you intend to claim and hold a lien, with the amount.
That the amount is due for labor, services, materials, or machinery furnished, and the improvement to which the work related.
Your name and address, plus the name and address of the person for whom the work was performed or materials furnished.
The dates of the first and last items of your contribution.
A legal description identifying the property with reasonable certainty.
The name and address of the property owner according to the best information available.
An itemized statement of the account on which the lien is claimed.

Each of these is a statutory element. Treat the list as a checklist and verify the facts you swear to.

Mail the Owner First, Then Record

Sequence matters. SDCL 44-9-17 bars the register of deeds from accepting a lien statement unless a copy has already been mailed to the owner by certified or registered mail at the owner’s last known address.³ The post office receipt for that mailing has to be attached to the lien statement when you file it. Mail it after recording, or forget the receipt, and the lien is defective.

The 120-Day Filing Deadline

SDCL 44-9-15 sets the outside deadline: “The lien shall cease at the end of one hundred twenty days after doing the last of such work, or furnishing the last item of such skill, services, material, or machinery.”⁴ File the verified statement with the register of deeds in the county where the property is located. The 120 days runs from your actual last day on the job, not from the date of the invoice or the date the project as a whole wrapped up. Build in enough time to mail the statement to the owner, wait for the certified mail receipt, and still get the filing in before day 120.

Once recorded, the lien clouds title and can block the owner from selling or refinancing until the claim is resolved.

Extra Notice When a Notice of Project Commencement Is Filed

If the owner or a prime contractor has filed a Notice of Project Commencement with the county register of deeds within 30 days of the start of work under SDCL 44-9-50, lower-tier parties pick up an additional duty.⁵ Under SDCL 44-9-53, sub-subcontractors and suppliers to subcontractors must send a written notice of furnishing labor or materials by certified or registered mail to both the contractor named in the Notice of Project Commencement and the property owner, no later than 60 days after their last work or last delivery. The notice has to include the claimant’s name, who they contracted with, a description of the work or materials, the project description, the dates of first and last work, and the amount claimed due. Individual laborers whose claim is under $2,000 are exempt.

Before you file your lien, check the register of deeds record for a Notice of Project Commencement on the project. If one exists and you are below the first tier, the 60-day notice runs in parallel with the 120-day filing clock, and skipping it costs you your lien rights entirely. If no Notice of Project Commencement was filed, this 60-day notice obligation does not apply.

Owner’s Right to Demand an Itemized Account

Within 15 days after the contract is completed, the owner can serve a written request on anyone who might have a lien, requiring an itemized and verified account of the claim, the amount, and the claimant’s name and address, under SDCL 44-9-14.⁵ No enforcement action on the lien can begin until at least 10 days after you provide the requested statement. If you receive one of these demands, respond in writing and keep proof.

Enforcing the Lien: The Six-Year Clock

Recording the lien does not collect the debt. Under SDCL 44-9-24, you have six years from the date of the last item in your filed lien statement to assert the lien by complaint or answer in circuit court.⁶ If no suit is commenced within that period, the owner, the owner’s agent, or the contractor can file an affidavit with the register of deeds attesting to the inaction, and the register of deeds will cancel the lien within 30 days.

Foreclosure itself is filed in the circuit court of the county where the property is located and proceeds in the same manner as a mortgage foreclosure under SDCL 44-9-23.⁵ All parties with an interest in the property, including mortgage holders, must be named.

The Owner Can Cut the Six Years Short

Owners who do not want to wait out the six years have a shortcut. Under SDCL 44-9-26, the owner can serve a written demand on the lien holder requiring them to commence suit.⁷ If the lien holder does not file suit within 30 days after being served, the lien is forfeited. Starting on the 40th day after service, the owner can file an affidavit with the register of deeds along with a copy of the demand and proof of service, and the register of deeds will cancel the lien. If you hold a lien and receive one of these demands, the 30-day deadline is firm.

Releasing the Lien Once You Are Paid

SDCL 44-9-21 requires the lien holder to execute and deliver a satisfaction to the property owner once the lien has been paid or otherwise resolved.⁸ The satisfaction must identify the lien by its date, filing date, amount claimed, property description, and the names of the claimant and owner, and it must be signed before two witnesses or acknowledged before a notary. The register of deeds cancels the lien on the record once the satisfaction is presented.

Refusing to release a satisfied lien is expensive. Under SDCL 44-9-22, the lien holder is liable for all damages caused by the refusal, plus reasonable attorney’s fees, plus a $100 penalty forfeited to the owner.⁹ If an unreleased lien stalls a sale or refinancing, those damages can grow quickly.

One Boundary: Public Projects Use Bonds, Not Liens

Mechanic’s liens generally cannot be placed on publicly owned property. South Dakota’s version of the Little Miller Act under SDCL Chapter 5-21 instead requires contractors on public construction projects to post a surety bond at least equal to the contract price before work begins, and that bond must obligate the contractor to promptly pay all persons supplying labor or materials.¹⁰ Public corporations may waive the bond for bids up to $25,000 under SDCL 5-21-1.1, and the threshold rises to $50,000 for state projects under SDCL 5-21-1.2. If a public entity fails to require the bond, the entity itself becomes liable to unpaid laborers and suppliers, with claims brought within 90 days of the work’s acceptance.

Unpaid subcontractors and suppliers on bonded public projects claim against the bond rather than against the property. If the public entity does not sue within six months of the contract’s completion and final settlement, the unpaid party may sue in the public entity’s name against the contractor and surety. That suit cannot begin until six months after completion but must be filed within one year, and anyone with a claim can join as a party within that same year.

1
South Dakota Legislature. South Dakota Code 44-9-1 – Persons Entitled to Lien–Property Affected–Extent of Lien–Exceptions
2
South Dakota Legislature. South Dakota Code 44-9-16 – Lien Statement by Lien Claimant–Verification–Contents
3
South Dakota Legislature. South Dakota Code Chapter 44-9 – Mechanics’ and Materialmen’s Liens
4
South Dakota Legislature. South Dakota Code 44-9-15 – Lien Ceases Without Filing of Required Lien Statement–Place of Filing of Statement
5
South Dakota Legislature. South Dakota Codified Laws Chapter 44-9 – Mechanics’ and Materialmen’s Liens
6
South Dakota Legislature. South Dakota Code 44-9-24 – Six-Year Limitation to Enforce Lien–Cancellation of Expired Lien
7
South Dakota Legislature. South Dakota Code 44-9-26 – Forfeiture of Lien for Failure to Commence Suit Upon Demand–Cancellation by Register of Deeds
8
South Dakota Legislature. South Dakota Code 44-9-21 – Manner of Satisfying Liens–Execution and Delivery of Satisfaction to Owner of Property–Contents–Acknowledgment–Record of Satisfaction–Cancellation of Lien
9
Justia. South Dakota Codified Laws Title 44 Chapter 09 – Mechanics’ and Materialmen’s Liens
10
South Dakota Legislature. South Dakota Codified Laws Chapter 5-21