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Change Order Markup Estimator
Calculate allowable Overhead, Profit, & Liabilities against direct field costs.
Direct Costs & Field Labor
Input the raw base costs associated with the change in scope. Ensure your labor is properly burdened before applying markups.
Logistics & Schedule Nuance
Capture unbilled overhead when a change order extends the project schedule, requires phased execution, or mandates out-of-hours work.
Ghost Impact (General Conditions Delay)
Contract Allowable Adjustments
Enter your contractually permitted markup limits to automatically calculate your allowed Overhead & Profit proposal.
Margin Dilution Warning
This Change Order yields a 4.7% profit margin, which dilutes your base contract target of 15%.
Total Billable Amount
$10,169.92
Direct Hard Costs & Labor
$8,675.00
Allowed Overhead (10%)
+ $867.50
Allowed Profit (5%)
+ $477.13
Liability & Bond Premium (1.5%)
+ $150.29
Automate AP Invoicing
Push approved CO directly to DocuSign and sync AR to Procore.
GC Pushback Analytics
Cross-reference this markup against historic GC rejection rates.
AIA Change Order Formulation & O&P Limits
Submitting a commercial change order requires more than just adding up material receipts and raw labor hours. To properly structure a submittal for architect or owner approval (such as an AIA G701 document), estimators must calculate fully burdened direct costs before applying contractual Overhead and Profit (O&P) markups.
Our AIA Change Order Calculator allows General Contractors and Subcontractors to cleanly segment direct field costs, apply mandatory labor burden percentages, and structure the final proposal to ensure you aren't leaving allowable markups on the table.
Recovering Ghost Impact & Schedule Delays
When out-of-scope work delays the critical path, contractors hemorrhage money on extended General Conditions. This is known as the "Ghost Impact." By inputting your project's daily GC burn rate (covering the superintendent, site trailer, fencing, and toilets) and the number of days delayed, this tool automatically rolls the schedule penalty into the direct cost basis.
Margin Dilution & Bond Creep
Applying a flat 10% markup to a change order often dilutes the overall margin of your base contract. The integrated dilution warning alerts estimators when a change order falls below the project's target margin. Additionally, the tool automatically calculates the liability creep required to cover the subsequent increases in Performance Bonds and Builder's Risk insurance.