Owners and GCs require lien waivers before releasing payment, precisely to prevent the scenario where they pay a sub and that sub, or their supplier, still files a lien for the same work. A conditional waiver only becomes effective once payment actually clears; an unconditional one is effective immediately on signing — a meaningful difference if the check bounces.
On a job with dozens of subs and suppliers, tracking which waiver is conditional, which is unconditional, which needs to go out before payment, and which needs to come back after, becomes its own administrative project — and a missed waiver is real legal exposure, not just paperwork.
Example
A GC processes a $30,000 progress payment to a drywall sub. Before releasing the check, they collect a conditional waiver for that amount; once the check clears, the sub's next pay app includes an unconditional waiver for the prior payment, closing the loop.
Where this goes wrong on real jobs
Waiver tracking breaks down exactly where it matters most — at scale, across dozens of subs with no shared process.
“Managing lien waivers which has become one of the more time consuming parts of running these projects since each sub and supplier has a different process.”
Related terms
Next step
Where this shows up in Datumel:
T&M Leak Audit$1,499 one-time
Where unbilled time-and-materials work leaks through your field documentation. Built for subs and foremen eating field changes that should be billed.