Iowa Code § 572.11: Extent of lien posted after ninety days.

Liens perfected under section 572.10 shall be enforced against the property or upon the bond, if given, by the owner or by the owner-builder’s buyer, only to the extent of the balance due from the owner to the general contractor or from the owner-builder’s buyer to the owner-builder at the time of the service of such notice; but if the bond was given by the general contractor or owner-builder, or person contracting with the subcontractor posting the claim for a lien, such bond shall be enforced to the full extent of the amount found due the subcontractor.