Iowa Mechanics Lien Statute: Deadlines, Notices & Foreclosure

To file an Iowa mechanics lien, post a verified lien statement to the Mechanics’ Notice and Lien Registry (MNLR) within 90 days of the last date you furnished labor or materials, then sue to foreclose within two years after that 90-day window closes. On residential projects, subcontractors have an extra step: a preliminary notice must be on the registry before the owner pays the general contractor, or the lien right is already gone. The rules sit in Chapter 572 of the Iowa Code, and the details matter. A missed notice or a blown deadline typically ends the claim.¹

Who Can Claim a Lien

Anyone who furnishes labor or materials for a building, land improvement, alteration, or repair under a contract with the owner, general contractor, or subcontractor can claim a lien on the improved property. The list reaches past traditional trades to grading, landscaping, sodding, sidewalk work, fencing, and nursery stock installation. Equipment rented to the owner, general contractor, or subcontractor also qualifies.¹

Chapter 572 defines “subcontractor” broadly as anyone furnishing material or performing labor on an improvement without a contract directly with the owner. That broad definition is why residential subcontractors face notice requirements general contractors avoid.¹

Two groups fall outside the statute. Second-tier suppliers, meaning those who supply materials to another supplier rather than to a contractor or subcontractor working on the project, lack the contractual connection Iowa requires. And mechanics liens reach only private property. Public projects are off limits for liens; subcontractors and suppliers there pursue a payment bond under Chapter 573 instead.²

The 90-Day Deadline and What the Lien Statement Must Contain

The core filing deadline is 90 days from the date you last furnished labor or materials. That clock starts on the actual last day of work or delivery, not from the contract date and not from when you sent the invoice. All filings go to the Secretary of State’s MNLR, not to a county recorder.¹

The lien statement is a verified (sworn) account of what you are owed after all credits, and it has to include specific items.

Dates: when you first furnished materials or labor, and when you last did.
A legal description sufficient to identify the property being charged with the lien.
The name and last known mailing address of the property owner.
The property address, or a description of the location if there is no standard address.
The tax parcel identification number.

Once posted, the lien is a public record. Buyers, lenders, and title companies see it, and that visibility is often what finally gets a stalled invoice paid. A clouded title stops sales and refinancings.

Residential Projects: The Notice Chain Before a Lien

Residential work adds two preliminary registry entries. Skip either one and the lien step cannot save you.

Notice of Commencement

On residential construction, the general contractor or owner-builder must post a notice of commencement to the MNLR within ten days after work begins. That posting creates the registry entry subcontractors reference when they file their own preliminary notices. The notice must include the owner’s name and address, the contractor’s or owner-builder’s name, address, and phone number, the property address, a legal description, the date work started, and the tax parcel identification number. The MNLR then assigns a registry number subcontractors will need.⁴

Commercial projects do not require a notice of commencement.

Preliminary Notice for Subcontractors

Every subcontractor on a residential project must post a preliminary notice to the MNLR to preserve lien rights. The deadline is tied to money, not to the calendar: the preliminary notice must be on the registry before the owner pays the balance due to the general contractor or owner-builder. Once the owner pays in full without having received a given subcontractor’s preliminary notice, that subcontractor’s lien rights are gone.⁵

The preliminary notice must include the owner’s name, the MNLR registry number from the notice of commencement, the subcontractor’s name, address, and phone number, the name and address of the person who hired the subcontractor, the general contractor’s or owner-builder’s name, the property address, a legal description, the date materials were first furnished or labor first performed, and the tax parcel identification number.⁶

Commercial subcontractors can skip the preliminary notice and go straight to the lien statement, so long as they meet the 90-day posting deadline.

Filing After 90 Days

Missing the 90-day window does not automatically end the claim. A general contractor or subcontractor may still post a lien to the MNLR after 90 days, but with an added requirement: written notice must be served on the property owner in the same manner as an original notice, typically by personal service. If the owner is outside the county where the property sits, a return confirming that fact by the person attempting service is enough, and the lien takes effect from the date it was posted to the registry.¹

Section 572.10 does not spell out a hard outer deadline for late filing, but the enforcement window in Section 572.27 effectively caps it. You still have to file suit within two years after the 90 days expire, so a lien posted too late to leave time for a lawsuit does nothing for you.

Serving the Owner

Notice to the owner follows posting. If you filed within the first 90 days, the MNLR administrator mails notice to the owner. If you filed under the late provision, service is on you, in the manner required for original notices.¹

Keep the documentation. Certified mail receipts, affidavits of personal service, and dated screenshots of the registry entry all matter if the lien gets challenged. Weak records on service is one of the common ways a technically valid lien gets dismissed.

MNLR Filing Fees

All filings go through the Secretary of State’s MNLR. Online filing costs less than mail.

Notice of commencement: $7 online, $10 by mail.
Preliminary notice: $7 online, $10 by mail.
Lien statement: $30 online, $40 by mail.

⁷

Online filers can pay by credit card or by a Secretary of State charge account.⁵

Enforcing the Lien by Foreclosure

A lien that just sits on the registry does not collect money. If the owner will not pay, you have to file a foreclosure lawsuit. The deadline is two years from the expiration of the 90 days after you last furnished labor or materials. In practical terms, that leaves roughly two years and 90 days from your last day of work to get the case filed.¹

Suit is filed in the district court of the county where the property sits. You must prove that you furnished the labor or materials, that you were not paid, and that you properly posted and served the lien. If you win, the court can order the property sold at a sheriff’s sale to satisfy the debt, and a prevailing plaintiff can recover reasonable attorney fees.¹

If sale proceeds fall short, you may pursue a deficiency judgment against the owner for the balance. The flip side matters too. If the court finds that the lien was posted in bad faith or that the sworn supporting affidavit was materially false, it must award the owner reasonable attorney fees plus at least $500 or the lien amount, whichever is less.¹

Releasing the Lien After Payment

When the lien is paid, the claimant has to acknowledge satisfaction. The trigger is the owner’s written demand. If you fail to release the lien within 30 days of receiving that demand, the owner can petition the court for an order compelling release and may seek damages, including attorney fees, for having to clear a wrongfully maintained lien.¹

Priority Against the IRS and in Bankruptcy

Two situations change what the lien is actually worth once perfected.

A mechanics lien generally takes priority over a federal tax lien if it attached before the IRS filed its notice of federal tax lien. Under federal law, an IRS lien is not valid against a mechanics lienor until that notice is filed. Your lien attaches on the earliest date it becomes valid under Iowa law against subsequent purchasers without actual notice, but not before you began furnishing labor or materials. There is also a narrow carve-out: for repair or improvement of an owner-occupied personal residence with no more than four dwelling units, where the contract price is $5,000 or less, the mechanics lien beats the federal tax lien regardless of filing order.⁸

If the owner files for bankruptcy, a properly perfected mechanics lien is treated as a secured claim, which generally survives bankruptcy if the debtor keeps the property. The automatic stay is the complication. A bankruptcy filing halts most actions to create, perfect, or enforce liens, so if you have not yet posted when the owner files, you may be blocked, subject to a limited exception under Section 546(b) for acts to perfect an interest where the trustee’s rights are subject to that perfection. And priority still bites: mechanics liens typically fall behind existing mortgages, so an over-leveraged property may leave nothing after the mortgage is paid. Even then, a perfected lien places you ahead of every unsecured creditor.⁹

1
Iowa Legislature. Iowa Code Chapter 572 – Mechanics Lien
2
Iowa Legislature. Iowa Code Chapter 573 – Labor and Material on Public Improvements
3
Iowa Legislature. Iowa Code Section 572.8 – Perfection of Lien
4
Iowa Legislature. Iowa Code Section 572.13A – Notice of Commencement of Work
5
Iowa Secretary of State. Subcontractors and Suppliers – Iowa Secretary of State
6
Iowa Legislature. Iowa Code Section 572.13B – Preliminary Notice Subcontractor
7
Iowa Legislature. Iowa Administrative Code Chapter 721-45 – Mechanics Notice and Lien Registry
8
Office of the Law Revision Counsel. 26 U.S. Code 6323 – Validity and Priority Against Certain Persons
9
Office of the Law Revision Counsel. 11 U.S. Code 362 – Automatic Stay