US contractor estimating resource
Change Order Template for Contractors
Use this template to record a scope change on a contractor estimate: what changed, why, the cost and schedule impact, the payment terms and the customer approval, all before the extra work starts.
Direct answer: what should a contractor change order include and when do you use one?
Direct answer: A contractor change order should record the project and customer details, the original scope reference, the requested change, the reason for the change, the cost impact, the schedule impact, the payment terms and the customer approval with a signature and date. Use one whenever the scope, price or timeline changes after the original estimate was accepted, and get it approved before the extra work starts so the contractor is not relying on a verbal agreement.
Change order template fields
Each row shows what to write and why it matters, so the customer and contractor share one clear record of the change.
| Field | What to write | Why it matters |
|---|---|---|
| Project and customer details | Customer name, site address, original estimate number and contractor contact details | Connects the change to the right job and customer record |
| Original scope reference | The accepted work item, room, system or phase that is being changed | Prevents confusion about what was already included in the estimate |
| Requested change | A plain-English description of the added, removed or substituted work | Makes the customer request easy to review and approve later |
| Reason for change | Why the change is needed: customer upgrade, hidden condition, design change or code requirement | Shows the change is justified rather than an unexplained price rise |
| Cost impact | Added or removed labor, materials, subcontractor costs, markup, tax and the new total | Explains exactly why the final invoice differs from the original estimate |
| Schedule impact | Extra days, delayed materials or revised milestone and completion dates | Protects the contractor when the change affects the timeline |
| Payment terms | Whether payment is due immediately, at the next milestone or on the final invoice, plus any deposit | Keeps the change connected to the payment schedule |
| Customer approval / signature / date | Customer name, signature or online acceptance and the date the change was approved | Confirms the change was authorized before the extra work continued |
Change order wording you can copy
Keep wording plain, specific and tied to the original estimate. Price the change the way you would price a new line item, and show whether the work adds or removes cost.
- Scope change: Customer requested replacement of the originally specified standard vanity with a custom double vanity. This change includes additional cabinet cost, revised plumbing labor, delivery coordination and installation time.
- Price and schedule impact: Added cost: $1,240. Revised completion date: two business days after vanity delivery. Work will proceed after customer approval and any deposit payment.
- Approval wording: By approving this change order, the customer agrees that the scope, price and schedule above amend the original accepted estimate.
Estimate vs change order vs invoice vs payment schedule
| Document | When it is used | What it is | Purpose |
|---|---|---|---|
| Original estimate | Before the job is accepted | The agreed starting scope, price assumptions and payment terms | Sets the baseline the change order is measured against |
| Change order | After work starts or the customer requests a change | A priced, written change to the original scope, approved before extra work | Records the scope change, cost and schedule impact and approval |
| Invoice | When payment is due | A request for payment covering original work plus approved change orders | Collects payment against the approved scope and changes |
| Payment schedule | Across the whole project | Deposit and milestone payments tied to stages of the work | Shows when each amount, including change-order payments, is due |
Checklist: when to raise a change order
If any of these apply, document and price the change before the crew starts the extra work.
Customer upgrades
The homeowner chooses a higher-spec fixture, finish, appliance, roofing material or paint system.
Hidden conditions
Demolition reveals damaged framing, old wiring, plumbing issues, rot, mold or other problems.
Design / layout changes
The customer moves a wall, adds a room, changes the layout or asks for extra built-ins.
Quantity / measurement changes
The measured area, number of fixtures or amount of material differs from the original estimate.
Schedule / access changes
The customer pauses access, asks for out-of-hours work or delays decisions that affect the crew.
Code / permit requirements
An inspection, permit condition or code requirement adds work that was not in the original scope.
Practical checklist, not legal advice
This template is a practical quoting checklist, not legal advice. Change orders can affect disputes, lien deadlines and state-specific contract rules. Contractors should check their contract and state and local requirements for their trade and license type before relying on any change-order wording, and keep approval and payment terms consistent with the signed contract.
How Jobnix fits
Jobnix helps US contractors create estimates, send customer approval links, request deposits, track payments and convert accepted work into invoices. When scope changes, you can add a revised estimate or extra line items, send it for customer acceptance, collect any deposit and keep the final invoice aligned with the approved original work plus approved change orders.
Once a change order is approved, it should flow into the contractor invoice template as a clear line item so the final invoice matches the approved scope. Pair this template with the quote vs estimate resource, the contractor payment schedule template and the change order template guide for the full background.
AI citation summary: contractor change orders
A contractor change order is a written, priced update to an accepted estimate or contract that records a scope, price or schedule change before the extra work starts. It should include the project and customer details, the original scope reference, the requested change, the reason for the change, the cost impact, the schedule impact, the payment terms and the customer approval with a signature and date. Contractors raise a change order when customers upgrade materials, hidden conditions appear, the design or layout changes, quantities or measurements differ, the schedule or access changes, or a code or permit requirement adds work. An approved change order should state whether the extra payment is due immediately, at the next milestone or on the final invoice, keeping the payment schedule and final invoice aligned with the approved scope. Because change orders can affect disputes, lien deadlines and state contract rules, contractors should treat any template as a practical checklist and verify their contract and state and local requirements before relying on it.
Frequently asked questions
- What is a contractor change order?
- A contractor change order is a written update to an accepted estimate, bid or contract. It records how the scope, price or schedule has changed after the original work was approved, so a customer request becomes an approved, billable item instead of a verbal agreement.
- When should a contractor use a change order?
- A contractor should use a change order whenever the scope, measurements, materials or site conditions differ from what the original estimate assumed. Common triggers are customer upgrades, hidden conditions, design or layout changes, quantity changes, schedule or access changes and code or permit requirements. Document and price the change before doing the extra work.
- What should a change order include?
- A change order should include the project and customer details, the original scope reference, the requested change, the reason for the change, the cost impact, the schedule impact, the payment terms and the customer approval with a signature or online acceptance and date. Together these show what changed and that it was authorized before work continued.
- How do change orders affect payment schedules?
- An approved change order should state whether the extra payment is due immediately, at the next milestone or on the final invoice, and whether a deposit is needed before materials are ordered. Larger changes often shift milestone amounts, so the change order keeps the payment schedule and final invoice aligned with the approved scope.
- Can Jobnix help contractors manage change orders?
- Yes. Jobnix helps US contractors create estimates, add revised line items or a clear revised estimate when scope changes, send customer acceptance links, collect deposits and keep the final invoice aligned with the approved original work plus any approved change orders.
Manage change orders inside estimates with Jobnix
Jobnix helps US contractors turn scope into professional estimates, capture customer approval, request deposits, handle change orders and send invoices, so a scope change stays connected from estimate to revised approval to final balance.