Key Takeaways
- Unbilled extra work can shrink a construction job’s margin even when the original estimate was accurate.
- Verbal requests and “we’ll settle up later” agreements create risk when authorization, scope, and pricing aren’t documented.
- Effective change order tracking follows extra work from field request through pricing, approval, job costing, billing, and collection.
- Separating change order costs from original-scope costs makes job-cost variances easier to explain.
- Weekly change order reviews and monthly WIP reporting can expose revenue at risk before a job closes.
“We’ll Settle Up at the End” Can Cost You
A superintendent requests extra work. The schedule is tight, and stopping for paperwork feels impractical.
“Go ahead,” someone says. “We’ll settle up at the end.”
Your crew finishes the work, but nobody obtains approval or adds it to an invoice.
At closeout, costs are higher than expected, revenue hasn’t moved, and the owner wonders where the margin went.
Roofers, electricians, plumbers, excavation contractors, and general contractors face this problem.
How do you stop doing work you never get paid for? Start by treating every scope change as something that must be tracked financially—not just handled in the field.
What Is Change Order Tracking in Construction?
Construction change order tracking is the process of documenting a change in contracted work, estimating its cost and price, obtaining the required authorization, recording its actual costs, and following it through billing and collection.
A change might involve extra excavation after unexpected site conditions, additional roofing repairs, relocated electrical fixtures, or a revised concrete pour.
Changes are normal in construction. Revenue leakage isn’t inevitable.
The objective isn’t to generate paperwork for its own sake. It’s to keep a clear record of what changed, what it costs, what the customer has authorized, and what still needs to be billed.
Why Contractors Lose Money on Unbilled Change Orders
Verbal Requests Never Become Formal Changes
A field supervisor agrees to help the general contractor, but the office never receives a written request. Weeks later, the people involved remember the conversation differently.
Work Starts Before Price or Authorization Is Resolved
Crews proceed to protect the schedule. Meanwhile, required contract notices, pricing, or approvals remain outstanding. Some contracts allow formal directives before price is finalized; informal permission shouldn’t be assumed to satisfy those requirements.
Approved Changes Don’t Reach Accounting
Even a signed change order can remain unbilled if project management doesn’t communicate its status to the person preparing invoices or payment applications.
Additional Costs Disappear Into the Base Job
Labor and materials hit the original job-cost codes. Management sees an over-budget project but cannot tell which overruns relate to added scope.
Each breakdown creates the same risk: the cost is recorded, but the path to payment is unclear.
Example: How Unbilled Extra Work Shrinks Job Margin
Consider a contractor with a $400,000 contract and $320,000 in estimated total costs.
The job is expected to generate $80,000 of gross profit—a 20% gross margin.
During construction, the customer requests additional work. The contractor estimates $22,000 in extra labor and materials and proposes a $30,000 change order.
The crew completes the work, but the change never reaches a clear commercial resolution.
What happens to the numbers?
If the $30,000 change is properly approved, earned, and recoverable: Total contract revenue becomes $430,000. With total costs of $342,000, the expected gross profit is $88,000, or about 20.5% margin.
If no additional revenue is recoverable: Contract revenue remains $400,000, while costs still rise to $342,000. Expected gross profit falls to $58,000, or 14.5% margin.
That’s a $30,000 difference in gross profit between the two outcomes.
The contractor hasn’t merely “lost the markup.” Without recovery, the company absorbs the entire $22,000 additional cost and misses the opportunity to earn the $8,000 margin built into its proposed change price.
The lesson: A customer knowing about extra work doesn’t automatically make it approved, billable, or collectible.
How to Track a Change Order From Request to Payment
1. Identify and Document the Scope Change
Train field supervisors to flag work outside the original contract. Record the project, date, requesting party, description, photos or drawings, and potential schedule impact.
Written field records beat reconstructing events months later.
2. Estimate the Cost and Submit Pricing
Price the additional labor, materials, equipment, subcontractors, and applicable overhead and markup. Consider potential schedule and productivity impacts, not just the obvious material purchase.
Keep the proposed price separate from the costs already incurred.
3. Follow the Contract’s Authorization Rules
Confirm who can authorize changes, what notices are required, and whether written approval must precede work.
Some contracts provide a formal mechanism for directed changes before the final price is agreed. Follow that process when applicable; don’t substitute an undocumented handshake.
4. Track Actual Costs Under the Change
Assign a separate change-order number or cost code. Timecards, supplier invoices, and subcontractor charges should identify the changed work wherever practical.
This protects your ability to explain the costs whether the change is approved, pending, or disputed.
5. Send Approved Changes to Billing
Once the change becomes billable under the contract, ensure accounting includes it in the appropriate invoice or pay application. Someone should own this handoff.
Approved but unbilled changes tie up money.
6. Verify Collection and Close the Loop
Track the change through invoicing, payment, and any remaining dispute. A proposal or signature alone doesn’t close the loop.
The process isn’t finished until the financial status is resolved.
How Unbilled Changes Hide Inside Job-Cost Variances
Suppose a roofing project is $18,000 over its labor and material budget.
Without separate tracking, management might assume the estimator underbid the project or crews worked inefficiently.
But perhaps $12,000 of that variance came from customer-requested work outside the original scope. That doesn’t mean the costs are automatically recoverable. It means the business needs to investigate them separately.
A practical monthly job-cost review should distinguish:
- Original-scope variance: Actual or forecasted costs beyond the base work budget.
- Change-related cost: Labor, materials, and other expenses tied to additional scope.
- Change-related revenue status: Proposed, authorized, earned, billed, or collected.
These categories separate production problems from change-order problems.
What Do Change Orders Have to Do With Your WIP Schedule?
A work-in-progress (WIP) schedule compares contract value, costs incurred, estimated costs to complete, earned revenue, and billings for active jobs.
Poorly tracked changes can distort several of those numbers.
Additional labor may increase cost to date and estimated total cost. An approved change may increase contract value. An unresolved change may create a risk that expected revenue won’t be collected.
Crucially, a pending change should not automatically be counted as earned revenue. Whether an unpriced or disputed modification affects recognized revenue depends on enforceable rights, contract terms, and applicable accounting standards.
Good WIP reporting makes that uncertainty visible instead of quietly assuming every proposed change will get paid.
What Should Be on a Construction Change Order Log?
A simple shared log can prevent changes from disappearing between the field and office.
For each change, record:
- Project name and unique change number
- Date and description of requested work
- Requesting party and responsible manager
- Proposed price and estimated cost
- Actual cost incurred
- Approval or directive status
- Billing status and amount invoiced
- Collection or dispute status
- Next action and accountable person
Keep pending, approved, billed, and collected distinct. They’re not interchangeable milestones.
How Often Should Contractors Review Open Changes?
Review change orders weekly while jobs are active, especially when crews are performing time-sensitive extra work.
At month-end, project management and accounting should compare the log with job costs, invoicing, and the WIP schedule.
Ask: Which changes have costs but no approved price? Which approved changes haven’t been billed? Which billed changes remain unpaid? And which job margins depend on unresolved revenue?
Early discovery beats finding these issues during the job post-mortem.
How to Stop Doing Extra Work Without Getting Paid
The most effective prevention is a repeatable process that crews and office staff actually use.
Make it easy to flag scope changes from the field. Assign responsibility for pricing and authorization. Follow contractual notice deadlines. Keep costs identifiable. Set a deadline for reviewing pending changes, and don’t let approved work miss the billing cycle.
Get appropriate contract or legal guidance on disputes.
Don’t make “we’ll settle up at the end” your change order system.
Conclusion
Contractors don’t always lose margin because they bid poorly or performed the work inefficiently.
Sometimes they lose it because the job changed, the costs kept accumulating, and the additional revenue never made it from conversation to contract to invoice.
A disciplined change order tracking process connects field decisions with job costs, approvals, billing, and collections—while there is still time to act.
The goal isn’t merely to document extra work. It’s to protect the profit your business is entitled to earn.
Stop Letting Unbilled Work Eat Into Your Margins With PHG Advisory
At PHG Advisory, we help contractors improve the financial visibility behind active projects.
Our bookkeeping and reporting support can help strengthen job-cost tracking, change-order cost visibility, billing reconciliation, WIP reporting, and month-end financial reviews.
Our Fractional CFO services help owners evaluate job-margin changes, pricing, cash flow exposure, and project financial controls.
If your crews keep completing extra work but your job margins don’t reflect the revenue you expected, contact PHG Advisory to discuss a stronger process for tracking construction profitability.
Frequently Asked Questions
What Is Change Order Tracking in Construction?
It’s the process of documenting, pricing, authorizing, costing, billing, and following up on changes to the original project scope.
How Can Contractors Prevent Unbilled Change Orders?
Require timely field documentation, follow the contract’s authorization process, assign change-specific cost codes, review open changes weekly, and confirm approved changes reach billing.
Can a Contractor Charge for Extra Work Without a Signed Change Order?
It depends on the contract, authorization, notice requirements, applicable law, and circumstances. Some contracts permit formal directives or other mechanisms. Don’t assume a verbal request alone establishes the right to payment.
Why Do Unbilled Change Orders Hurt Job Margins?
Extra labor and materials increase costs. If the corresponding revenue is not approved, recognized, or collected, the contractor may absorb those costs and lose expected profit.
Should Pending Change Orders Be Included in a WIP Schedule?
They should be tracked as a management exposure, but they shouldn’t automatically increase recognized revenue. Accounting treatment requires evaluating the contract and applicable revenue-recognition rules.
How Often Should Contractors Review Change Orders?
Weekly during active work is a practical operating rhythm, supported by a formal reconciliation with job costing, billing, and WIP reports at month-end.
Can Bookkeeping Help Identify Lost Change Order Revenue?
Yes. Reliable job-cost coding, billing reconciliation, change-order logs, and variance reviews can reveal where additional costs are accumulating without corresponding invoicing or resolved revenue.
