Conditional vs. Unconditional Lien Waivers

A lien waiver is a document where you, as a contractor or subcontractor, waive your right to file a mechanics lien — in exchange for payment. California has four statutory lien waiver forms, and using the wrong one or signing one prematurely can permanently waive rights you haven't been paid for yet.

The four California waiver types

Conditional Waiver on Progress Payment: Waives lien rights for a specific period, but only becomes effective when the payment actually clears. This is the safe one to sign when you're waiting for a check. Unconditional Waiver on Progress Payment: Immediately waives lien rights for a specific period upon signing — whether or not you've actually been paid. Only sign this after the check has cleared your bank. Conditional Waiver on Final Payment: Waives all remaining lien rights, but only becomes effective when final payment clears. Sign when you're expecting your final check. Unconditional Waiver on Final Payment: Immediately and permanently waives all lien rights upon signing. Only sign this after your final payment has fully cleared.

The simple rule

Why GCs ask for unconditional waivers

Some GCs request unconditional waivers before issuing payment — often as a matter of internal process or owner requirement. This is common but puts risk on you. You can counter by offering a conditional waiver now and agreeing to provide an unconditional waiver once payment clears. A reasonable GC will accept this.

California statutory forms

This is general educational information, not legal advice. Lien waiver laws are state-specific and situation-dependent. Consult a California construction attorney for guidance.