Retainage release is when the money held back from each pay app finally gets billed and paid. Contracts set the triggers: often a reduction at a milestone (like 50% complete), partial release at substantial completion, and the remainder at final completion once closeout documents are in. Some states require prompt release on public jobs, and some allow line-item or early release for trades that finish early.
Release almost never happens on its own. The contractor usually submits a final pay application for retainage, with final lien waivers, consent of surety (on bonded jobs), as-builts, O&M manuals, warranties and a completed punch list.
Why it matters
Retainage receivable is often larger than the profit on a job. Every week it sits unbilled is cash you’ve earned but don’t have. On the payable side, GCs must release sub retainage in step with their own, under the subcontract and any prompt payment laws.
Worked example
Riverside Medical Center, Pay App #9 (sample data): billed to date is $33,000,000 and retainage at 10% is $3,300,000 (G702 line 5). If the contract allowed a reduction to 5% after 50% complete, retainage would build more slowly from here. At final completion, the full balance held is billed on a retainage release pay app, backed by final waivers and closeout documents.
Common mistakes
- Waiting for the owner to offer release instead of billing it.
- Missing closeout documents that hold up the whole release.
- Releasing sub retainage before getting their final unconditional waivers.
How os.construction handles it
We’re building retainage as a tracked balance on both the owner and sub side of every pay app, with closeout documents attached, so release is a checklist, not a scramble. It’s in development.