Conditional vs Unconditional Lien Waivers: A GC's Guide

By Adam Hicks, CooperBuild AI · November 2, 2026

What is the difference between a conditional and an unconditional lien waiver? A conditional lien waiver gives up lien rights only once the payment it describes actually clears. An unconditional lien waiver gives them up the moment it's signed, whether or not the money ever arrives. As a rule, a GC collects conditional waivers with each pay application and unconditional waivers after the payment has cleared.

That one distinction causes most lien waiver trouble on small and mid-size jobs. Subs get pushed to sign unconditional waivers before they're paid, and GCs release payments without the right paper back. Below is how the four waiver types work, when to use each, which states dictate the wording, and a simple process that keeps waivers from slipping.

#What are the four types of lien waivers?

Lien waivers come in two pairs: conditional or unconditional, and progress or final. That gives four forms, and California's Contractors State License Board lays them out the same way on its waiver and release forms page (opens in a new tab):

• Conditional waiver on progress payment. Signed before a progress payment, effective only if that payment is made.
• Unconditional waiver on progress payment. Signed after a progress payment, stating it was received.
• Conditional waiver on final payment. Signed before the final payment, effective only if it is made.
• Unconditional waiver on final payment. Signed after the final payment, stating it was received.

A progress waiver covers work through a stated date. A final waiver covers the whole job.

#How does a conditional lien waiver work?

A conditional waiver is a promise tied to a specific payment. Arizona's statute is a good example of the wording: the conditional progress form becomes effective only "on receipt by the undersigned of a check" for a stated amount, and "when the check has been properly endorsed and has been paid by the bank on which it is drawn" (A.R.S. 33-1008 (opens in a new tab)).

That makes it safe for a sub or supplier to hand over with an invoice or pay application. If the check bounces or never comes, their lien rights for that amount are still intact.

#How does an unconditional lien waiver work?

An unconditional waiver says the signer has already been paid and releases rights on that basis. The CSLB describes it as the form to use when "the claimant asserts in the waiver that they received the progress payment." If the signer hasn't actually been paid, they've still given up the right.

That's why experienced subs refuse to sign one early. In a widely read r/Construction thread (opens in a new tab), the top answer was blunt: only sign the unconditional waiver "when you have the money IN your account."

#When should a GC ask for each type?

Use a two-step rhythm on every pay cycle:

1. With the pay application: collect a conditional progress waiver from each sub and supplier for the amount you're about to pay.
2. After the payment clears: collect an unconditional progress waiver for that same amount, usually with the next month's pay application.
3. At closeout: collect a conditional final waiver with the final invoice, then an unconditional final waiver once the final payment, including retainage, clears.

Asking for an unconditional waiver before you pay is a bad habit even if your subs go along with it. It sours relationships, and in states with mandatory forms it can backfire on you.

#Which states require statutory lien waiver forms?

Some states write the waiver text into law and expect waivers to follow it. A 2026 state-by-state summary from FormsByState (opens in a new tab) lists Arizona, California, Florida, Georgia, Massachusetts, Michigan, Mississippi, Missouri, Nevada, Texas, Utah and Wyoming as statutory-form states, and notes that Mississippi and Wyoming also require notarization. Lien law changes, so check your state's current statute or ask a construction attorney before you build your forms.

Two examples show why the details matter:

• California. The CSLB says waivers "must follow substantially" the statutory forms to be effective, and a conditional final waiver is binding only with evidence of payment, such as the claimant's endorsement on a check the bank has paid.
• Florida. Under Florida Statutes 713.20 (opens in a new tab), a lien right "may not be waived in advance," the progress form states that it "does not cover any retention," and no one may require a lienor to furnish a waiver "different from the forms" in the statute.

Outside the statutory-form states, a waiver generally just needs to clearly identify the parties, the project, the payment, and whether it is conditional or unconditional, progress or final.

#What are the most common lien waiver mistakes?

• Using a final form for a progress payment. A final waiver can release far more than the check covers, including retainage and future work.
• Getting unconditional waivers before paying. Your subs lose leverage, and some will push back hard on your next job.
• Ignoring lower tiers. A sub's supplier can still have lien rights even when you've paid the sub. Name the lower-tier parties who owe you waivers in the subcontract.
• Through-dates and amounts that don't match the pay app. If the waiver amount doesn't tie to what you're paying that period, the owner, lender or title company may reject the draw. If your pay apps come back for numbers that don't tie, our guide to filling out pay applications covers the same problem on the billing side.
• Making exceptions. "Send the check, I'll get you the waiver next week" is how a gap starts.

#How do you track lien waivers across subs and suppliers?

A GC posted in r/GeneralContractor (opens in a new tab) in March 2026 that waivers had become "one of the more time consuming parts of running these projects," and that a missed waiver created a problem they "should have avoided entirely." The replies agreed on the fix: make the waiver a gate on payment, not a follow-up.

A tracker that works has one row per sub or supplier, per project, per pay period, with:

• the commitment (subcontract or PO) and tier,
• the waiver type due (conditional or unconditional, progress or final),
• the amount and through-date, matched to the pay app,
• status: requested, received, or reconciled,
• and a simple rule that no payment is released until that row is complete.

A spreadsheet can do this if someone keeps it current. The hard part is that it's another copy of your commitments and payments, separate from your billing and your books, which is the same rebuild we describe in The Procore + Excel + QuickBooks stack. Billing from the scope you actually won makes the amounts easier to tie out.

#Where CooperBuild AI fits

CooperBuild AI keeps estimating, the job, subcontracts, vendor payments and billing in one workspace, so the amounts on your pay apps and payments come from the same records. Assistants do the paperwork, and you approve every change before anything goes out. You still decide what gets paid and when.

If chasing paper on every pay cycle eats your week, start a 14-day free trial, no credit card needed, and run next month's billing on one live job.

This article is general information, not legal advice. Lien and waiver rules vary by state and change over time.

#FAQ

#What is the difference between a conditional and an unconditional lien waiver?

A conditional lien waiver releases lien rights only when the payment it describes actually clears. An unconditional lien waiver releases them as soon as it is signed, even if the payment never arrives.

#When should a subcontractor sign an unconditional lien waiver?

Only after the payment it covers has been received and has cleared the bank. Before that, sign a conditional waiver instead.

#Does a progress lien waiver cover retainage?

Usually not. A progress waiver covers work through a stated date, and statutory forms such as Florida's say the progress waiver does not cover retention. Retainage is normally released with the final waivers.

#Do lien waivers need to be notarized?

In most states, no. A 2026 state-by-state summary lists Mississippi and Wyoming as requiring notarization, so check your state's current rules.

#Which states have statutory lien waiver forms?

A 2026 summary lists Arizona, California, Florida, Georgia, Massachusetts, Michigan, Mississippi, Missouri, Nevada, Texas, Utah and Wyoming. Check your state's current statute before relying on any form.