The lien-waiver trap that stalls a draw

Lien waivers are the least glamorous document in the package and the one most likely to cause real trouble. The math can be perfect, the invoices all matched, and the draw still shouldn't fund - because a required waiver is missing, or it's conditional when it should be unconditional, or its through-date doesn't cover the period being paid.

The distinctions that matter

A conditional waiver only takes effect once payment clears; an unconditional one is effective on signature. A waiver's through-date defines exactly how much of the work it releases - we've seen waivers dated 2026-04-15 in a package for work through May, and the gap silently leaves a month of lien rights open. A waiver signed by the wrong entity, or undated, releases nothing you can rely on. These are small textual details with large downstream consequences, and they're exactly the kind of thing that gets skimmed at 6pm on a Friday when the draw has to go out.

A missing or mis-typed lien waiver is not a paperwork nit. It's an unsecured payment.

Reading like a reviewer, not a parser

Verifying waivers well means reading them the way a careful reviewer would - checking type against the project's policy (some GCs require unconditional waivers from suppliers but conditionals from subs until final payment), matching through-dates against the billing period, confirming execution by an authorized signatory - and doing it consistently on every sub, every month, without fatigue. It also means knowing what's absent: the highest-value finding is often 'the required waiver for this sub simply isn't in the package,' which no amount of reading the documents that are present will ever surface. Completeness has to be checked before content. To borrow a phrase from the EJCDC C-700: the waiver is the contractor's certification that it has been paid - and the owner's only safe harbor against a later claim.