Contractor Change-Order Benchmarks
Scope always changes. The only question is whether you price it before you build it. The approval, capture, and unpriced-scope ranges below are Level field observations, practitioner ranges from our work with contractors rather than a measured survey distribution. The field-rework cost figure is cited from a peer-reviewed ASCE study.
Key Finding
Best-in-class contractors approve 95%+ of change orders before doing the work. Laggards approve under 60%.
This is a Level field observation from client work, not a survey distribution. Disciplined contractors treat every scope change as a priced, signed change order before the crew touches it. Undisciplined contractors do the extra work first, then try to bill for it later, or never bill for it at all. Unpriced scope creep is invisible on the P&L. There is no line item for work you did but never charged for. It shows up only as a job that came in under the margin you bid.
For completed, authorized work eligible to bill, recovery can improve contribution after incremental collection costs. Check whether the labor and materials were already spent. Systematizing change-order capture is one of the highest-return operating fixes a contractor can make.
Change-Order Field Observations
The ranges below are Level field observations, drawn from our work with contractors rather than a measured benchmark distribution. No public dataset publishes change-order approval or capture rates, and these figures are not part of the Level Index dataset. The one externally sourced row, field-rework cost, is cited from the ASCE Journal of Construction Engineering & Management (2026).
| Metric | Laggards | Typical | Best-in-class | Note & Source |
|---|---|---|---|---|
| Change-Order Approval Rate | under 60% | roughly two-thirds to three-quarters | 95%+ | Top performers price and sign before the crew does the work.Level field observation |
| Change-Order Revenue Captured | under 65% of identified | most of identified value | 95%+ | Match identified, approved, completed and billed changes separately; only completed supported work belongs in a billing-gap review.Level field observation |
| Days To Approve | a week or more | a few days | before the work starts | Approve before the work is done or the customer resists paying.Level field observation |
| Unpriced Scope | a large share of CO cost built but never billed | meaningful leakage on custom work | near zero | The share of change-order cost that gets built but never billed.Level field observation |
| Field Rework Cost | not tiered | ~0.38% to 0.76% of contract value | not tiered | 0.38% precompletion; ~0.76% including postcompletion (ASCE). Older CII estimates exceed 5% under a different method, not a laggard tier.External: ASCE Journal of Construction Engineering & Management (2026) ASCE 2026 |
What the data tells us
Approve before you build, or you will not get paid
In Level's field experience, top contractors approve 95%-plus of change orders, and the discipline is the timing: price it, sign it, then do it. Once the crew has already completed the work, the customer has little reason to pay for a change they have already received. A practical process test is to compare identified, submitted, approved, completed and billed changes. These field ranges do not establish how much of the difference is process or customer mix.
The more custom the work, the wider the gap
Standardized service and replacement work picks up a change order on relatively few jobs. Custom and commercial work sees far more. More scope changes means more opportunity, and more risk. The disciplined shops turn that volume into billed revenue; the undisciplined ones turn it into unbilled labor. This is a pattern we observe in the field, not a surveyed rate.
Rework and uncaptured scope need separate cost and billing checks
Field rework runs about 0.38% of contract value precompletion, rising to ~0.76% once postcompletion corrections are included, in peer-reviewed ASCE work, with older Construction Industry Institute estimates above 5%. For changes actually completed, authorized and billable, recovered billing can improve contribution because labor and materials were already spent. Match identified, approved, completed and billed changes before sizing recovery, and include collection costs. Authorization is harder to secure after work is done.
Unpriced scope is a common reason good jobs come in under margin
When a job you bid well finishes below target margin, the usual suspects are labor overruns or a bad estimate. Often the real cause is scope that grew after the contract and never got a change order. This is why change-order discipline lives inside job costing: without it, you cannot tell a labor problem from an unbilled-scope problem.
The CLEAR Framework for Contractors
Learn moreEvery contractor runs on five financial pillars. Change-order capture sits at the center of the E pillar, where scope turns into billed margin.
Expand all 5 CLEAR financial pillars (Cash, Labor, Earnings, Accounts, Risk)
DSO, invoice speed, retainage, progress billing. The gap between completing work and collecting payment is where most contractors bleed cash.
Hours vs budget, technician utilization, billable capture, callbacks. Unpriced scope shows up here first, as labor spent on work no one billed.
Job-level margins, change-order capture, service agreement profitability. Unpriced scope creep is a frequent cause in Level's field work. Track changes separately to distinguish it from labor or estimating overruns.
Quote conversion rate, pull-through revenue, customer retention. The retained 2-4x repair-revenue comparison is a historical field reference, with eligible sample and period unverified. Compare your own agreement and non-agreement customers using matched periods.
Customer concentration, warranty exposure, bonding capacity. A single customer above 20% of revenue prompts a downside review: test margin, cash and covenant impact if the contract ends.
Frequently Asked Questions
What share of change orders should a contractor get approved?
In Level's field work with contractors, best-in-class shops approve 95% or more of the change orders they identify, and they price and approve them before the extra work is done. The laggards approve under 60%, where the denominator is identified proposed changes, not only completed work. A change can be rejected, canceled or never built. Match completion and billing records before treating an unapproved change as work performed at zero revenue. These are practitioner ranges from client work, not a measured benchmark distribution.
Why does unpriced scope creep never show up on the P&L?
Because there is no line item for work you did but never billed. A change order that never gets priced does not appear as a loss, it appears as nothing. The only signature it leaves is a job that came in under the margin you bid. Owners may blame labor overruns or estimating, but unrecorded scope after signing can also be the cause. Track changes separately to distinguish them. It is the most invisible margin lever in contracting precisely because it hides inside otherwise normal-looking jobs.
How much does rework and unpriced scope actually cost?
A peer-reviewed study in the ASCE Journal of Construction Engineering & Management puts precompletion field rework at about 0.38% of contract value on average, rising to about 0.76% once postcompletion corrections are included. Older estimates from the Construction Industry Institute run higher, above 5%, so treat the ASCE figures as a rigorous low-end anchor. On top of documented rework, unpriced change-order scope adds cost that never gets a line item at all, which is why the total drag on a job can be far larger than the rework number alone.
How quickly should a change order be approved?
The discipline that matters is approving before the work is done, not the raw number of days. In Level's experience, top performers turn a change order around in a couple of days because they have a standard process: identify the scope change, price it, get a signature, then build. The laggards take a week or more, by which point the crew has usually already done the work, which makes the customer far less willing to pay for something they have already received.
Operating review
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Are supplier returns and later bills in the same job population?
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The Level Index dataset
The dataset contains separately measured contractor metrics with their own definitions and samples. The change-order planning bands and external rework references on this page are not measured distributions in that download.