Avoid a $75,000+ loss from a missed deadline
Iowa Lien Deadlines for Material Suppliers
Iowa requires notice "upon starting work" for owner-occupied residential projects.
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Iowa is High Risk for Suppliers
Owner-occupied residential projects require notice "upon starting work". For non-residential, notify the prime contractor within 30 days of first furnishing materials.
Iowa Mechanics Lien Deadlines (Updated 2026)
| Deadline Type | Timing | Details |
|---|---|---|
| Preliminary/Notice (Residential) | "Upon starting work" | For owner-occupied residential. |
| Non-residential Note | Notify prime contractor within 30 days | Within 30 days of first furnishing materials. |
| Lien Filing | 90 days from last providing materials | Must file lien by 90 days from last providing materials. |
| Special | Online Portal | Posting to Iowa Mechanic’s Notice & Lien Registry online portal. |
| Enforcement | 2 years from last date lien could have been filed | Suit to enforce must be filed within 2 years. |
| Statutes | Iowa Code §572.8; §572.9; §572.10; §572.11; §572.27; §572.28 |
Common Supplier Mistakes in Iowa
Missing Preliminary Notice
Failing to send the required preliminary notice is the most common reason suppliers lose their lien rights in Iowa.
Late Lien Filing
The lien must be filed by the specific deadline. Even one day late invalidates the lien.
Missing Enforcement Deadline
Enforcement must occur within the statutory period after filing.
Not Sure Which Deadline Applies?
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Frequently Asked Questions
What notices are required?
Owner-occupied residential: "upon starting work". Non-residential: notify prime contractor within 30 days of first furnishing.
When must the lien be filed?
90 days from last providing materials.
What is the enforcement period?
2 years from last date lien could have been filed.
What statutes apply?
Iowa Code §572.8; §572.9; §572.10; §572.11; §572.27; §572.28
Disclaimer: This content is for informational purposes only and does not constitute legal advice.