You've gone above and beyond for a client—extra revisions, additional site visits, or a scope expansion that was never in the original contract. Now it's time to bill for that extra work. But without a signed change order, you risk disputes, delayed payments, or even losing the client's trust. Asking for a signed change order before you send an extra invoice can feel awkward, especially if you have a friendly relationship. However, it is a non-negotiable business practice that protects both you and your client from misunderstandings. On July 25, 2026, with many projects in full swing and budgets under scrutiny, securing formal approval is more important than ever. This guide offers a step-by-step approach and ready-to-use email templates to help you request that signed change order confidently, professionally, and without damaging your client relationship.
Why Is a Signed Change Order So Critical?
A signed change order is not just a piece of paper—it is your insurance policy. It confirms that the client agrees to the additional work and the associated costs, preventing disputes later. Without it, you have no formal proof of consent, and the client may refuse to pay or claim they never authorized the extra work. Change orders also protect the client by providing transparency and ensuring they are not surprised by an invoice. They serve as a clear record of scope adjustments, timelines, and budgets. Moreover, if your company is audited or if there is a legal dispute, a signed change order is a critical document. Think of it as a necessary administrative step that keeps your business relationships healthy and your cash flow predictable.
Pro Tip: Mention the change order process during the initial project kickoff. When clients know that you require signed approval for scope changes, they are more likely to cooperate when the time comes.
Common Mistakes That Delay or Jeopardize Change Order Approval
Even with a legitimate need for extra billing, a poorly worded request can stall the process or create friction. Avoid these pitfalls to keep things moving smoothly.
- Asking without a clear justification. Saying "we need to charge more" is not enough. Provide a detailed explanation of why the extra work is necessary and how it benefits the client.
- Sending a change order without a cost breakdown. Clients want to see exactly what they are paying for. Include labor hours, materials, and any other costs clearly.
- Using an overly casual tone. A change order is a formal document. While your email should be polite, it must also convey the seriousness of the request.
- Not specifying a deadline. Without a clear timeline for signing and returning the document, the client may take weeks to respond, delaying your billing.
- Forgetting to attach the change order form. If you only mention it in the email but don't include the actual form, you are creating extra back-and-forth.
Warning: Never start work on the extra scope before the change order is signed. Doing so puts you in a weak position and can lead to non-payment.
Time Your Request to Avoid Billing Disputes
When you send your change order request can significantly influence how quickly it gets approved. Follow these timing guidelines for the best results.
- Send it as soon as you identify the need for extra work. Do not wait until the project is complete. Early communication builds trust.
- Align with the project's natural milestones. If you are at a logical pause point (e.g., after a phase completion), it is easier for the client to review and approve.
- Send it mid-week, mid-morning. Tuesday through Thursday, between 9:30 and 11:30 AM, is optimal. Avoid Mondays and Fridays.
- Give the client 5–7 business days to review and sign. Account for their internal approval processes, especially in larger organizations.
- If the extra work is urgent, mention the urgency in your email and request a faster turnaround. Example: "We need this approved by [date] to meet the delivery deadline."
Sample Emails for Different Client Scenarios
Choose the email template that best matches your relationship with the client and the complexity of the change. All templates include subject line options and placeholders.
Template 1: Polite and Collaborative Approach (Best for Ongoing Relationships)
Use this when you have a strong, trust-based relationship and want to present the change as a joint solution.
Subject line options:
- Change Order Request – [Project Name] – Extra Scope
- Update on [Project] – Additional Work Approval
- Please Sign: Change Order for [Project]
Subject: Change Order Request – [Project Name] – Extra Scope
Dear [Client Name],
I hope you're having a productive week. As we've progressed on the [Project Name], we've identified a need for additional work that falls outside the original scope—specifically, [brief description of the extra work].
To keep everything transparent and aligned, I've prepared a change order that outlines the additional tasks, the revised timeline, and the associated cost of [Amount]. I believe this extra effort will deliver [benefit to the client, e.g., "improved performance" or "faster turnaround"], making it a worthwhile investment.
Could you please review the attached change order and sign it at your earliest convenience? Once we have your approval, we'll proceed immediately and keep you updated on progress. If you have any questions or would like to discuss alternatives, I'm happy to hop on a call.
Thank you for your partnership and understanding.
Best regards,
[Your Full Name]
[Your Title]
[Your Phone Number]Template 2: Direct and Business-Like (Best for Formal or Larger Clients)
Use this when you need to emphasize the contractual aspect and the urgency of getting a signed document.
Subject line options:
- Action Required: Signed Change Order for [Project]
- Extra Billing Authorization – Change Order Enclosed
- Formal Change Order Request – [Your Company]
Subject: Action Required: Signed Change Order for [Project]
Dear [Client Name],
Per our recent discussion regarding the additional scope of work for [Project Name], I have attached a formal change order for your review and signature.
The change order covers [specific tasks] and increases the total project cost by [Amount]. This document is necessary to ensure we can bill for the extra services accurately and to keep our project records consistent with the original agreement.
Please sign and return the change order by [Date] so that we can proceed with billing and avoid any delays. If the proposed changes do not meet your expectations, please let me know immediately, and we can adjust accordingly.
I appreciate your prompt attention to this matter. Feel free to reach out if you have any questions.
Sincerely,
[Your Full Name]
[Your Title]
[Your Phone Number]Template 3: Gentle Reminder for a Client Who Hasn't Signed Yet
Use this when you have already sent the change order but the client has not responded within a reasonable timeframe.
Subject line options:
- Reminder: Change Order for [Project] – Need Your Signature
- Following Up on Change Order – [Project Name]
- Quick Check on Change Order Approval
Subject: Reminder: Change Order for [Project] – Need Your Signature
Dear [Client Name],
I hope you're doing well. I'm reaching out to follow up on the change order I sent on [Date] for the additional work on [Project Name].
We're ready to move forward with the extra scope as soon as we have your signed approval. Could you please review the document and sign it by [Date]? If you have any concerns or would like to discuss the details further, I'm available at your convenience.
Thank you for your time, and I look forward to moving this forward.
Best,
[Your Full Name]
[Your Title]
[Your Phone Number]Pro Tip: Always attach the change order document as a PDF, and if you use an e-signature tool (like DocuSign), include a direct link for the client to sign electronically. This reduces friction and speeds up the process.
How to Handle a Client Who Hesitates or Delays Signing
Some clients are naturally cautious or have internal red tape. If your change order request stalls, here is a professional plan to move it forward without damaging the relationship.
Step 1: Wait 3–5 business days. Give them time to review and get internal approvals.
Step 2: Send a polite follow-up email. Use Template 3 above or a shorter version: "Just checking in to see if you had any questions about the change order."
Step 3: Offer to schedule a brief call. Sometimes a 15-minute conversation clarifies concerns and speeds up the signature.
Step 4: If they express hesitation, ask for specific feedback. Are they concerned about the cost? The scope? The timeline? Address each point directly and be willing to negotiate reasonable adjustments.
Step 5: If you still receive no response after two follow-ups, escalate gently by copying their manager or your primary contact (if you have one). Frame it as: "I want to ensure we keep the project on track, and your signature will help us proceed."
Step 6: If all else fails, consider delivering a partial amount of the extra work while continuing to seek approval, but only if the risk is acceptable. Document all your attempts to get a signature.
Frequently Asked Questions
Q: Can I bill for extra work without a signed change order?
A: Technically, you can, but it is risky. Without a signed change order, the client may dispute the invoice, and you have no formal proof of their agreement. It's always safer to secure a signed document before doing any extra work that you intend to charge for.
Q: What if the client approves verbally but never signs?
A: Verbal approvals are not enough for formal billing. Send a follow-up email summarizing the verbal agreement and attach the change order, asking them to sign for your records. If they still don't sign, you may need to pause work on the extra scope until they do.
Q: How detailed should the change order be?
A: It should include a clear description of the additional work, the reason for the change, the revised timeline, the cost breakdown (labor, materials, etc.), and the total amount. Also, reference the original contract and any previous change orders.
Q: Should I request a change order for small additional tasks?
A: It depends on your company's policy. If the extra work is minimal (e.g., 5% of the total project cost), you might choose to absorb it as a goodwill gesture. But if you are regularly doing extra work without a change order, you are losing revenue and setting a bad precedent. Use your judgment based on the client and the amount.
Q: What if the client wants to add scope but refuses to sign a change order because they expect it to be free?
A: Politely explain that the additional work is outside the original scope and requires extra resources. Offer to discuss their needs and find a solution—perhaps they can compromise on certain deliverables to stay within budget. If they still refuse, you may need to decline the extra work or escalate the conversation.