General Contractors — No Preliminary Notice Required
Under Iowa Code §572.1 et seq., general contractors who contract directly with the property owner are not required to serve a preliminary notice to preserve their mechanic lien rights. The direct contractual relationship with the owner is sufficient to establish mechanic lien rights.
However, general contractors must still comply with all mechanic lien filing deadlines, including the 90-day deadline for filing a verified statement of account after completion or cessation of work.
Subcontractors & Suppliers — Residential Projects (30-Day Notice)
On residential construction projects, subcontractors and material suppliers who do not have a direct contract with the property owner must serve a preliminary notice within 30 days of first furnishing labor or materials to the project.
This notice must be served on the property owner and provides the owner with information about the parties furnishing labor or materials to the project. Failure to timely serve this notice may result in the loss of mechanic lien rights.
Subcontractors & Suppliers — Commercial Projects (90-Day Notice)
On commercial construction projects, subcontractors and material suppliers not in direct privity with the property owner have an extended deadline of 90 days from first furnishing labor or materials to serve their preliminary notice.
The extended commercial deadline provides more time for compliance, but claimants should still serve notice promptly to avoid any risk of missing the deadline. The notice must be delivered to the property owner.
Public Works — Notice to General Contractor (30-Day Deadline)
Under Iowa Code §573.1 et seq., subcontractors and suppliers not in privity with the general contractor must provide written notice to the general contractor within 30 days of first furnishing labor or materials to a public works project.
This notice is essential to preserving the right to make a claim against the payment bond. Failure to timely deliver this notice may bar the claimant from recovering on the bond.
Best Practices for Iowa Notice Compliance
National Lien & Bond recommends serving all preliminary notices as early as possible, regardless of whether the project is residential or commercial. Certified mail with return receipt requested provides reliable proof of delivery and compliance.
Maintaining detailed records of first furnishing dates and notice delivery is critical. Iowa's distinction between residential and commercial notice deadlines requires careful classification of each project at the outset.
Frequently Asked Questions
Is a preliminary notice required for general contractors in Iowa?
No. General contractors who contract directly with the property owner are not required to serve a preliminary notice under Iowa Code §572.1 et seq. Their direct contractual relationship with the owner is sufficient to preserve mechanic lien rights.
What is the preliminary notice deadline for residential projects in Iowa?
Subcontractors and material suppliers not in privity with the owner must serve preliminary notice within 30 days of first furnishing labor or materials on residential projects.
What is the preliminary notice deadline for commercial projects in Iowa?
On commercial projects, the preliminary notice deadline is extended to 90 days from first furnishing labor or materials for subcontractors and suppliers not in privity with the owner.
What notice is required for Iowa public works bond claims?
Under Iowa Code §573.1 et seq., subcontractors and suppliers not in privity with the general contractor must provide written notice to the GC within 30 days of first furnishing labor or materials.
How should I deliver preliminary notice in Iowa?
National Lien & Bond recommends certified mail with return receipt requested for reliable proof of delivery. Maintain detailed records of first furnishing dates and all notice correspondence.
Related Iowa Resources
Explore other critical compliance areas for Iowa construction mechanic lien law.
Mechanic Lien Deadlines
Verified mechanic lien claim within 90 days after completion or cessation of work for all claimants
Mechanic Lien Enforcement Deadlines
Suit within 2 years from expiration of 90-day filing period; public works bond claims within 30 days after final settlement
Iowa Overview
Return to the main Iowa construction mechanic lien law page