The problem
Design changes are a leading driver of overruns: a 2025 study of large-scale projects attributed 56.5 percent of change-order-related cost overruns to design changes. (Engineering, Technology & Applied Science Research, 2025) When scope changes on a project, that change needs to be captured, priced, and submitted before the next pay period closes or the work gets absorbed without compensation. That process is slow. Specialty contractors report an average of 22 days from a signed T&M ticket to a fully priced change order request, then another 26 days waiting on GC review. (Dodge Construction Network and Clearstory, 2026)
The documentation problem compounds the time burden, and it shows up in cash flow: 83 percent of specialty contractors say the change order process hurts their cash flow. (Dodge Construction Network and Clearstory, 2026) Despite the financial stakes, many specialty contractors still capture time and material tickets on paper. Paper-based documentation is vulnerable to loss, difficult to aggregate into a properly formatted change order, and impossible to track systematically across a project's full scope change history. When a change order dispute arises, the firm with paper T&M tickets is in a weaker position than the firm with a timestamped, organized documentation trail.
Revenue leakage from change orders doesn't require overt error. It accumulates through volume and administrative friction: scope changes that get tracked informally and never submitted, T&M work that isn't compiled into a change order before the billing deadline, and approvals that aren't confirmed in writing before the GC disputes the amount. For a firm where change orders represent 15 percent of annual revenue, a 20 percent leakage rate on that category is 3 percent of total annual income, not recovered from hours already worked.
What's driving it
Change order problems are documentation and process problems. The work gets done. The documentation lags behind because the team is managing active construction and the administrative overhead of formatting, pricing, and submitting change orders competes with everything else that requires their attention.
The pricing process is particularly vulnerable. Pricing a change order requires pulling historical cost data for the type of work involved, applying current labor rates, accounting for project-specific conditions, and formatting the submission to meet the GC's requirements. Done manually, this takes hours per change order. Done under deadline pressure, it gets done quickly. That means it either gets under-priced or it gets deferred and eventually forgotten.
The follow-up burden compounds the submission burden. A submitted change order that sits unacknowledged requires follow-up. Follow-up requires someone to track what's been submitted, what's been acknowledged, and what's been disputed or ignored. That tracking typically lives in a PM's head or a spreadsheet that reflects whoever last updated it.
What resolution looks like
AI tools structure change order documentation by capturing scope changes in real time, generating pricing frameworks from historical cost data, and tracking approval status across the GC chain. The project manager reviews, adjusts for project-specific conditions, and submits. The engineering judgment on whether a scope change is valid and how to price it stays with the team. The administrative work of assembling, formatting, and tracking the documentation does not.
For firms where change order administration eats hours every week on every active project, a structured workflow recovers a meaningful portion of those hours. More significantly, it reduces the revenue leakage from work that got done but didn't get properly documented and submitted.
QP measures change order workflow improvement in revenue terms: what was your capture rate before, what is it after, and what does that difference represent annually? The workflow redesign is the mechanism. The revenue recovery is the outcome, and it should be quantified, not estimated.
Properly documented change orders also protect the firm in disputes. A timestamped record of scope change notifications, pricing submissions, and approval requests is a materially different position than a stack of paper T&M tickets.
The bottom line
Change orders represent a significant share of annual income for most MEP and specialty contractors. That income is only captured if the documentation catches up with the work. When it doesn't, the revenue is real but uncollected, absorbed by the firm through under-billing on work already performed.
A 10 percent improvement in change order capture rate on a firm where change orders represent 20 percent of revenue is 2 percent of total annual income recovered. That recovery compounds across every active project.
Sources: Dodge Construction Network and Clearstory, Optimizing the Change Order Process SmartMarket Insight (2026): 83% of specialty contractors say the change order process hurts their cash flow; 77% have written off change order work as bad debt; an average of 22 days from signed T&M ticket to priced change order request, plus 26 days of GC review. Ramadhan and Waty, Engineering, Technology & Applied Science Research, vol. 15 no. 1 (2025): design changes account for 56.5% of change-order-related cost overruns on the large-scale projects studied. Revenue-share and capture-rate figures in this article are illustrative examples, not survey data.
If your change order capture rate is estimated rather than measured, that's a revenue gap worth quantifying.
Quantum Precision works with MEP firms to design change order workflows that reduce administrative burden and close the gap between work performed and work billed.
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