What is a lien waiver in simple terms?

A lien waiver is a signed document where a contractor, subcontractor, or supplier gives up (waives) their right to file a mechanics lien for a specific payment in exchange for being paid.

Why do general contractors require lien waivers?

GCs and owners collect lien waivers to prove that everyone on the project has been paid, which protects them from double payment and from liens being filed against the property.

Do lien waiver rules vary by state?

Yes. Some states require specific statutory forms, and a couple even require notarization. Always confirm your state's current requirements before relying on a waiver.

What Is a Lien Waiver? A Contractor's Plain-English Guide

A lien waiver is a signed document in which a contractor, subcontractor, or supplier agrees to give up their right to file a mechanics lien against a property in exchange for payment. Think of it as a receipt that also surrenders a powerful legal remedy: once you sign, you confirm you have been (or will be) paid and won't put a lien on the project for that amount.

Why general contractors require them

Before a general contractor or owner releases payment, they usually require a lien waiver from everyone in the payment chain. The reason is simple: a mechanics lien filed by an unpaid sub or supplier can cloud the property title and even force the owner to pay twice. Collecting waivers at each draw proves that money is flowing down the chain and protects the owner, the lender, and the GC.

The 4 types of lien waivers

There are four standard lien waivers, built from two questions: is it conditional or unconditional, and is it a progress or final payment?

Conditional Progress — waives rights for one progress payment, but only once that payment actually clears.
Unconditional Progress — waives rights for a progress payment that has already been received.
Conditional Final — waives all remaining rights at final payment, conditioned on receiving it.
Unconditional Final — releases all rights after final payment has cleared.

Not sure which to pick? Our guide on conditional vs. unconditional waivers and partial vs. final waivers break down exactly when to use each.

When each is used

During the project, subs typically sign conditional progress waivers with each draw and follow up with unconditional progress waivers once the check clears. At completion, the same pattern applies with the final waivers. Tying waivers to your G702/G703 draw schedule keeps the paperwork clean and your payments moving.

Rules vary by state

Lien waiver requirements are set at the state level. Some states require a specific statutory form and a few even require notarization. For example, see our California and Texas lien waiver pages for state-specific details. Always confirm your current state requirements before relying on any waiver.

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