Retainage and lien waivers show up on the same jobs for the same reason: someone up the chain wants leverage to make sure the work gets finished and gets finished right. That's a reasonable thing for a GC or owner to want. It's also, if you don't understand the mechanics, a reliable way to have 5–10% of a job's value sitting in someone else's account for months after your crew is gone — or to sign away your right to collect it without realizing that's what the form did.
What retainage actually is
Retainage is a percentage of each payment application withheld by the GC or owner until the job (or your portion of it) is substantially complete — sometimes held further until final completion or the warranty period closes. You did the work, the draw was approved, and the money still doesn't show up in full. That gap is retainage.
Typical retainage rates:
- 5% is the most common rate on private commercial and residential work.
- 10% shows up on public projects and jobs with a GC that's being conservative about a sub's track record.
- Reduced retainage after 50% completion is common on longer jobs — some contracts drop from 10% to 5% once the project crosses the halfway mark, since the risk of a sub walking off drops as more of the job is already built.
On a $150,000 subcontract at 5% retainage, that's $7,500 held back across the life of the job — money you've already paid labor and material costs to earn, sitting on someone else's books until closeout. On a 10% job that's $15,000. Multiply that across three or four jobs running at once and retainage isn't a rounding error, it's a real chunk of the working capital you'd otherwise have on hand.
Know when it releases — and put it in writing
The two release triggers to nail down before you sign a subcontract:
- Substantial completion of your scope, not substantial completion of the whole project. If your subcontract ties retainage release to the GC's overall project closeout instead of your own completed work, you can finish your scope in month two of an eight-month job and still not see the last 5% until month eight.
- A hard deadline after substantial completion, not "upon final payment from the owner." Many states put a statutory cap on how long retainage can be held after substantial completion — often in the 30–60 day range — but that only protects you if your contract doesn't sign the protection away with vaguer language. Check your state's prompt payment or retainage statute before you sign a template contract someone hands you, not after the money's late.
If the subcontract is silent on a release trigger, that's not neutral — it defaults to whatever's most convenient for whoever wrote it, which is usually the party not holding the risk.
Lien waivers: what the four types actually mean
A lien waiver is a document you sign giving up your right to file a mechanic's lien against the property for a given amount of work or payment. GCs and owners require them before releasing payment, which makes sense — they don't want to pay you and then get liened anyway. The problem is the four standard waiver types don't do the same thing, and signing the wrong one at the wrong moment can cost you real money.
| Type | What it does | When to use it |
|---|---|---|
| Conditional waiver, progress payment | Releases lien rights for this draw, but only takes effect once the check actually clears | Sign this when submitting an invoice, before payment is received |
| Unconditional waiver, progress payment | Releases lien rights for this draw immediately, whether or not you've been paid | Only sign after the payment has cleared your account |
| Conditional waiver, final payment | Releases all remaining lien rights on the job, effective once final payment clears | Sign with your final invoice |
| Unconditional waiver, final payment | Releases all remaining lien rights immediately, payment received or not | Only sign after final payment has cleared — this one has no fallback if the check bounces |
The trap is the unconditional waiver. Some GCs bundle it into the paperwork required just to submit a draw request, which means you're being asked to give up lien rights for money you haven't received yet, with no built-in protection if the payment doesn't come through. If a GC's standard paperwork asks for an unconditional waiver before payment, it's reasonable — and normal — to push back and ask for the conditional version instead, or to hold the unconditional waiver until the check clears rather than signing at time of invoice.
Building it into your estimate and contract
Retainage and lien waiver terms belong in the subcontract, not a side conversation, and they affect how you should think about cash flow when pricing a job in the first place:
- State the retainage percentage and release trigger explicitly in the payment terms, same as you would a deposit or draw schedule on your own client-facing estimates — vague terms default against whoever's owed the money.
- Price your cash flow assuming retainage is real, not a formality. If 5–10% of every draw is held back until closeout, your material and payroll obligations don't shrink to match — factor that gap into how much working capital a job actually requires before you commit crew and material orders to it.
- Never sign an unconditional waiver on unpaid work, regardless of how routine the GC's paperwork process makes it feel. A conditional waiver protects you with zero downside to the GC if they're actually going to pay — the only party an unconditional-before-payment waiver benefits is one that might not.
JobPencil's estimates keep payment terms as a first-class part of the document instead of a side conversation, so retainage percentages and draw structure are right there next to the pricing the client already agreed to. Build one free in the browser, no account required.