# Iowa — Mechanics lien filing deadlines, preliminary notice requirements, and enforcement windows by US state and party role

For Iowa, preliminary notice required is conditional — not required for GC; required for subs/suppliers on residential projects within 30 days of first furnishing, or 90 days on commercial projects; notice name is Preliminary Notice; notice deadline — gc (days) is not required; notice deadline — sub/supplier (days) is 30; lien recording deadline — gc (days) is 90, recorded from its source on 2026-08-14.

- **State:** Iowa
- **Preliminary notice required:** conditional — not required for GC; required for subs/suppliers on residential projects within 30 days of first furnishing, or 90 days on commercial projects _(our reading, not quoted from the source)_
- **Notice name:** Preliminary Notice
- **Notice deadline — GC (days):** not required
- **Notice deadline — sub/supplier (days):** 30
- **Lien recording deadline — GC (days):** 90 _(verified: appears in the quote below)_
- **Lien recording deadline — sub/supplier (days):** 90 _(verified: appears in the quote below)_
- **Enforcement deadline (days):** 2 years 90 days
- **Late notice consequence:** partial _(our reading, not quoted from the source)_
- **Statute:** Iowa Code §572.1 et seq.

## What the source says

> All claimants must perfect their mechanic lien by filing a verified statement of account (mechanic lien claim) within 90 days after the date of last furnishing labor or materials, or within 90 days after the completion or cessation of the work, whichever is applicable. Enforcement suits must be commenced within 2 years from the expiration of the 90-day filing period.

## Source

- https://mechanicslien.com/iowa

Last verified: 2026-08-14. Review by: 2027-08-14.
Part of [Mechanics lien filing deadlines, preliminary notice requirements, and enforcement windows by US state and party role](https://referencesource.org/mechanics-lien-deadlines-by-state/).