Construction Retainage FAQ for Subcontractors

Our webinars have a way of surfacing the real questions rattling around subcontractors' heads, and our "Release the Retainage" webinar was no exception. We got a flood of them, all making one thing very clear: retainage is still one of the most frustrating and misunderstood parts of getting paid in construction.

We heard from subs dealing with two-year holds on DOT projects, GCs demanding unconditional waivers before they’d pay, and clients hiding behind the “we haven’t been paid yet” excuse for a full year past substantial completion. Stories every one of you has probably lived—or at least heard of—at some point.

So instead of letting those questions disappear into the Zoom ether, we’ve pulled them all together here, along with a handful of retainage questions we hear most often outside the webinar. Scan for your situation, share this with your team, and if your question isn’t here, send it over. 

‍Missed the webinar the first time around? Catch the recording here.

State Laws and Local Retainage Rules

Can a GC legally hold more retainage than the law allows?

In rare instances, yes—but usually because the extra isn't classified as retainage at all. It's a separate compliance withholding stacked on top of the statutory cap.

Connecticut is a classic example. The state caps retainage at 5% on public works, but the Commission on Human Rights and Opportunities (CHRO) allows an additional ~2% to be withheld until the prime contractor's Good Faith MBE (minority business enterprise) participation plan is approved. That extra 2% isn't technically retainage; it's a regulatory withholding under a different statute that sits on top of the 5% cap without violating it. Similar programs exist in other states with MBE, workforce, or prevailing wage compliance requirements.

You can't really fight the hold itself, since it sits between the GC or awarding authority and the state. But do press your GC for status updates on the approval process, as approval is often where the money gets stuck. Jobs routinely close out before these compliance approvals land, leaving the extra withholding in limbo for months after your punch list is clear.

What are my options when a GC withholds retainage because "the owner hasn't paid"?

Don’t accept that as the end of the conversation. Start by asking for documentation of the owner’s nonpayment, not just a verbal explanation. Then revisit your contract: does it include a pay-if-paid clause or just pay-when-paid timing language? That distinction matters.

Even where upstream nonpayment is real, many states limit how long retainage can be held or tie release to milestones like substantial completion—not indefinite owner payment. If the job is effectively complete on your end, push on that trigger.

From there, your leverage is the same as any other payment issue:

• Send a formal payment demand tied to contract terms
• Watch your lien or bond claim deadlines (these often run regardless of retainage)
• Escalate early if timelines are slipping

Is retainage treated differently on public vs. private projects?

Yes. State or federal statutes, like prompt pay acts and public works laws, govern public projects, and the caps tend to be stricter. Private projects rely more heavily on the contract, which is where most horror stories come from. 

That said, the gap is closing in some places. For example, California's SB61 caps retainage on private projects at 5% for contracts signed after January 1, 2026.

How do I find out what my state's retainage laws actually say?

Start with your state's prompt payment act and any retainage-specific statutes, checking public and private separately (they're often different). The American Subcontractors Association publishes state-level guidance, and local subcontractor or builder associations are often the fastest ways to understand how the rules apply in practice.

Retainage Percentage, Negotiation, and Bonds

Are retention bonds available in all states?

Not universally. A few states—like California, Florida, and Washington—have statutory frameworks that allow or structure the use of retention bonds, primarily on public projects. 

Most states don't address them directly, and they're still relatively uncommon in private work. But that doesn't mean they're off the table. Retention bonds are a contractual substitute for retainage, so the real question is whether your owner or GC will accept one—and whether your surety is comfortable writing one, since familiarity varies across the market.

For a plain-English overview of how these bonds function, The Surety & Fidelity Association of America has solid guidance.

What's the standard retainage percentage, and can I negotiate it?

The most common retainage benchmarks are 5% and 10%. Many states cap retainage on public work at 5%, while private work often comes down to whatever the contract says—which means it’s negotiable.

If you have leverage (e.g., specialty scope, schedule sensitivity, strong GC relationships), don’t treat the number as fixed. As we mentioned in the webinar, push for a 5% cap, a step-down at 50% completion, or release tied to your scope, rather than the entire project. Those three together matter more than the starting percentage alone. 

How can I get retainage reduced or released earlier?

You have a few options, but most GCs won’t offer these voluntarily; you need to ask up front.

1. Step-down at 50% completion: Ask the GC to reduce retainage—e.g., from 5% to 2.5%—once you’ve completed half your scope, assuming performance is on track. This is typically called a variable retainage rate, rather than a fixed one.
2. Tie release to your scope (not the project): If your contract references “the Project,” know that you’re waiting on every other trade. Negotiate this trigger so retainage is released upon substantial completion of your work or defined milestones tied to it—and make sure delays by others don’t delay your payment.
3. Milestone-based (phased) release: If your work happens in phases, structure retainage to be released as each phase is completed, signed off, and closed out—not held until the very end.

At the end of the day, if it’s not written into your subcontract, it’s not happening, so raise these items early while terms are still negotiable.

Can retainage be held in an interest-bearing escrow account?

Yes! In some states, this is actually required for public jobs above a certain threshold, but for private work, it's a contract negotiation item. 

If you go this route, make sure the contract specifies that interest accrues to the subcontractor. It won’t be a huge dollar amount, but over long project timelines, it’s better than nothing.

Retainage Release Mechanisms

What’s the difference between substantial completion and final completion, and why does it matter?

Substantial completion is the point where the project—or your scope—is usable for its intended purpose, even if minor items remain. It’s also a key legal milestone: it often triggers lien deadlines, warranty periods, and, for some states, when retainage is due.

Final completion comes later. That’s when everything is fully wrapped up—punch list items, closeout documents, and formal owner sign-off.

The catch is how “substantial completion” is defined in your contract. Many GCs tie it to whole-project completion, not your scope. That means you lose the benefit of hitting that milestone early, thereby potentially waiting months (if not years) for your retainage payment. That's exactly why you want to negotiate scope-based substantial completion into your subcontract.

What would be the contractual language to ask for scope-based release?

Look for boilerplate in your subcontract along the lines of: "Retainage will be released upon final completion of the Project." Then suggest something to the tune of:

"Retainage attributable to Subcontractor’s Work shall be released upon Substantial Completion of Subcontractor’s Work, provided all required closeout documentation specific to that Work has been submitted. Release shall not be contingent on completion of the overall Project."

Always run the final language by counsel, but this is the concept to push for.

Is retainage tied to my scope completion, project completion, or final completion?

It’s tied to whatever your subcontract says, so look there first. In most cases, that means project completion unless you negotiate otherwise.

If the contract references “the Project,” you’re waiting on every other trade. If it’s written around your scope, the release is tied to your work instead. Also watch for language like: “no release of retainage prior to Final Completion.” That typically means full project closeout—i.e., punch list, paperwork, and owner sign-off—not just finishing your scope. That definition is often buried elsewhere in the contract.

The key is to confirm the trigger before you sign. If it’s not clearly tied to your scope, you should assume you’re getting paid last.

Where do I find the closeout requirements that trigger retainage release?

In your subcontract, usually in an exhibit or addendum.

The GC’s PM typically manages the list of closeout requirements, but it flows down to you. Don’t wait until the end of the job to figure it out. Pull it at kickoff so you know exactly what’s required to get paid, and build your own internal project closeout checklist so nothing slips.

Change Orders and Retainage

What if the GC keeps issuing change orders after substantial completion?

GCs can issue change orders after substantial completion, but they shouldn't use them to hold up your closeout or retainage. Remember that substantial completion means your scope is essentially done and usable. So, at that point, new change orders should be treated as separate work, not a reason to delay releasing retainage on the original scope. 

‍Track every change order closely, and don't let them become a point of negotiation at the end of the job.

Should retainage apply to change orders the same way it does to the base contract?

By default, yes. Most subcontracts apply the same retainage percentage to change orders. But there's no law of physics here; it's contractual, meaning it’s negotiable. You can push for retainage to apply to none, some, or only larger change orders. And it’s honestly a fair conversation to have upfront, especially on fast-moving projects where change orders add up quickly.

Lien Waivers and Retainage

Do I send the final lien waiver at final billing or when billing for retainage (after final billing)?

It depends on how your final payment is structured.

• If retainage is included in your final pay application, you’ll typically submit one conditional final waiver for the full amount, then an unconditional one after payment clears.
• If retainage is billed separately, it’s treated as its own payment event—so it may require a separate waiver cycle, but the same submission order.

In either case, the rule is the same: only waive lien rights for amounts you’ve actually been paid, and be cautious of any “final” waiver that includes retainage before it’s released.

What if the GC requires an unconditional waiver before releasing payment?

This is where a lot of subs lose leverage, and it happens often. The cleanest (and safest) approach is to submit a conditional waiver first, and then provide the unconditional waiver only once payment has cleared your bank. If the GC insists on an unconditional waiver before funding, push back in writing and reference your state's lien waiver statutes, as many states have rules about this.

Know that once you hand over an unconditional waiver unpaid, your leverage is gone.

What if the GC won’t release payment without a waiver in hand?

The same answer applies: you give them the conditional waiver first, which legally says "I waive my lien rights conditional on actually getting paid." That satisfies their internal AP requirements without giving away your leverage. Then once payment clears, you send the unconditional. 

Any GC who won't accept a conditional waiver as the prerequisite for cutting the check is asking you to take on all the risk.

Does a conditional final waiver lock me into the total contract amount?

No, a conditional final waiver only waives lien rights through the amount and date listed on the waiver, not for future or unknown work. 

For instance, if change orders come in after that waiver, they're typically treated as new work and covered under a new waiver cycle. That said, always review the exact waiver language, and never sign a waiver that broadly covers “all work performed through final completion” unless you’re truly done.

Lien Rights, Demand Letters, and Escalation

If retainage is still being held near the lien deadline, what should I do?

Your only real option at that point is to file the lien anyway before the deadline, even if retainage isn't technically "due" yet. This is because there is no fix after the fact; once the deadline passes, your lien rights are gone. It’s not uncommon for subs to lien for expected retainage simply to preserve leverage.

Going forward, negotiate protection up front by asking the client to extend lien rights, escrow, or other safeguards. And check out Siteline's state-level lien rights guides so you’re never caught unaware.

Do I have lien rights on retainage, and when does the clock start?

Yes, retainage is lienable because it's money owed to you for work performed. The tricky part is timing. Depending on the state, the deadline may run from your last day of work, substantial completion, or notice of completion—not from when retainage is due.

Know your state's deadline trigger and calendar it from day one.

When should I send a notice of intent to lien vs. a demand letter?

Oftentimes, subs send a demand letter first, once payment is past due and normal follow-ups aren’t working. It’s your initial formal escalation and gives the GC a chance to resolve the issue without triggering lien rights.

If that doesn’t work or timing is tight (as in, the lien deadline is approaching), send a notice of intent to lien (NOI). In many states, it’s a required step before filing and signals that you’re prepared to file a lien if you’re not paid.

Accounting and A/R Tracking

How should I track retainage on my A/R aging report?

Separate from your standard A/R. Retainage behaves differently. It's not past due until the release milestone triggers, so lumping it into your regular aging buckets distorts the picture. 

Most ERP systems let you track retainage as its own receivable category; if yours doesn't, track it in a parallel report so your team knows which balances are approaching release and which are actually past due.

Can I charge interest on past-due retainage?

Often, yes—particularly on public work, where prompt payment acts often require statutory interest on retainage held past the deadline. On private work, it depends on your contract. Even if it’s not required, including a late fee or interest clause gives you leverage when chasing payment.

‍

If there’s anything we hope you learned from our retainage webinar, it’s that although retainage isn’t going anywhere, the way you manage it can make a huge difference in your cash flow. In fact, most challenges here come down to visibility and timing, specifically:

• Knowing when retainage should be released,
• Tracking (and following up on) what’s actually owed, and
• Making sure nothing slips through the cracks at closeout.

That’s exactly where Siteline comes in. Siteline helps subcontractors track retainage separately from standard A/R, stay on top of billing and waiver cycles, and keep closeout moving so you’re not chasing payment months after your work is done.

If retainage is a consistent pain point for your team, it’s worth taking a closer look at what Siteline can do to help.