Venture Lab

Construction change order builder

Put a scope change, its cost and schedule impact into a clear printable document.

Preparing the workspace…

Change details

Price adjustment

Use client-facing rates. Negative rates create credits. Keep private costs and margins out.

Positive days extend the schedule; negative days shorten it. Select taxable lines using your applicable tax rules.

Document preview

Enter the scope and price adjustment, then prepare the change order.

Document guidance

What belongs in a construction change order?

Include the parties, changed scope, additions or credits, schedule impact and approval dependencies. Signature lines are provided; signatures are not collected or authenticated.

How the totals work

Line amount = quantity × rate. Tax applies only to checked lines, including credits. Revised contract = existing amount + net adjustment. Include prior approved changes in the existing amount.

Does printing approve the change?

Printing leaves the change proposed. Approval must follow your contract and applicable requirements; this tool supplies no electronic signatures or legal advice.

Keeping records

Print/save a PDF and export the line-item CSV before starting a new document. The latest valid draft stays in this browser.

How to use

Identify the project and change, add cost lines and schedule impact, then review the document with the parties involved.

What to check

A printed approval section is not electronic signature verification. Contract requirements and enforceability need independent review.

Build a change order with traceable additions and credits

Identify the project, parties and reference, then describe what changes from the agreed scope. Give each addition or credit its own line. The printed document uses your entered rates, so keep private costs and margins out of customer-facing fields.

Worked calculation: a proposed $437.60 increase

This example uses hypothetical amounts and an illustrative 8% tax rate. Only the two checked lines enter the tax calculation.

Worked line items, separate from your document
LineQuantity × rateAmountTax checked?
Additional units12 × $25$300Yes
Labor4 × $50$200No
Omitted item credit1 × −$80−$80Yes
Additions, a credit and tax produce a proposed adjustmentA 300 dollar addition plus 200 dollars of labor, minus an 80 dollar credit, plus 17 dollars and 60 cents of entered tax gives a 437 dollar and 60 cent net increase. +$300+$200−$80+$17.60$437.60 UnitsLaborCreditTaxNet
Worked price adjustment, separate from your document. Amounts and the selected tax treatment are illustrative.

Subtotal = $300 + $200 − $80 = $420. Checked tax base = $300 − $80 = $220; tax = $17.60. Net adjustment = $437.60. An entered existing contract amount of $10,000 becomes $10,437.60 if approved.

Keep scope and schedule explicit

Use the existing amount immediately before this proposed change, including earlier approved changes. State exclusions and approval dependencies in the scope or notes. A schedule input of +2 proposes two additional calendar days; it does not calculate a new completion date or analyze the project schedule.

How do I enter a credit?

Keep quantity positive and use a negative unit rate. A checked credit reduces the selected tax base. Decide which lines are taxable using your applicable rules; the tool does not determine tax treatment.

Do I have to enter the existing contract amount?

No. Leave it blank to show the adjustment without an existing or revised total. Entering zero is different: it is treated as an actual $0 existing amount.

Does printing approve or sign the change?

No. The output remains marked proposed and approval pending. Signature lines are blank; no signature is collected or authenticated. Follow the governing contract’s approval process. Save a PDF and CSV before starting a new document; the browser retains the latest valid draft, not a contract revision history.