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Lien waivers by state · Idaho

Idaho lien waiver requirements

Idaho is a non-statutory state

Idaho does not prescribe any statutory lien-waiver or release form, and waivers may be freely worded. Lien waivers are treated like ordinary contracts: to be enforceable they must be supported by adequate consideration and must clearly express the intent to waive lien rights. Idaho imposes no notarization, preliminary-notice, or notice-of-intent requirements as a precondition to lien rights for most private commercial projects.

Statute: Idaho Code §§ 45-501 to 45-525 (mechanics' lien statute, Title 45, Chapter 5); no dedicated lien-waiver statute. Electronic signatures: Idaho Code § 28-50-107 (UETA).

Idaho lien waiver forms

The four standard waiver-and-release types and Idaho’s rules for each.
Waiver type	Statutory form?	Notarized?
Conditional waiver and release on progress payment
Unconditional waiver and release on progress payment
Conditional waiver and release on final payment
Unconditional waiver and release on final payment

Requirements at a glance

Notarization: Idaho does not require lien waivers to be notarized; notarization is optional unless a party requests it. (Note: the mechanics lien claim itself must be verified/notarized to be recorded, but that requirement does not apply to waivers.)
Mandatory statutory language: Idaho has no statutory waiver form and no mandated waiver language. Waivers are construed as contracts; the intent to waive must clearly appear and the waiver must be supported by adequate consideration to be enforceable.
Electronic signatures accepted

Key Idaho deadlines

Preliminary / pre-lien notice: Not required. Idaho does not require a preliminary notice to preserve mechanics lien rights on private commercial projects. (A separate residential disclosure notice applies to GCs on owner-occupied residential projects over $2,000, but that is not a lien-preserving preliminary notice.)
Notice of intent to lien: Not required. Idaho does not require a notice of intent to lien before filing; it is optional and used only as a demand/leverage tool.
Mechanics lien filing deadline: Within 90 days after completion of the labor/services or furnishing of materials (Idaho Code § 45-507); a copy of the recorded claim must be served on the owner within 5 business days of filing.

Idaho lien waiver FAQ

Does Idaho require a specific lien waiver form?

No. Idaho does not require or provide a statutory lien waiver form. Waivers can be freely worded but are treated as contracts — they must be supported by adequate consideration and must clearly show the intent to waive lien rights to be enforceable.

Do lien waivers need to be notarized in Idaho?

No. Idaho does not require lien waivers to be notarized; notarization is optional unless a party requests it. (The mechanics lien claim itself must be notarized to be recorded, but that does not apply to waivers.)

Can lien waivers be signed electronically in Idaho?

Yes. Electronic signatures are valid on Idaho lien waivers under Idaho's Uniform Electronic Transactions Act (Idaho Code § 28-50-107), which provides that an electronic signature satisfies any law requiring a signature.

What is the deadline to file a mechanics lien in Idaho?

Within 90 days after the claimant's completion of labor/services or furnishing of materials (Idaho Code § 45-507). A copy of the recorded lien claim must also be served on the owner within 5 business days of filing.