Free Plumber Change Order Template
This free plumbing change order template includes fields for the original contract reference, description of requested changes, reason for change, cost impact with line items, timeline impact, revised contract total, and authorization signatures from both contractor and client. Download the PDF to document scope changes professionally.
What's Included
- Reference to original contract or estimate number
- Change order number for tracking
- Description of requested changes
- Reason for the change
- Cost impact with itemized additions and deductions
- Original contract amount and revised total
- Timeline impact and revised completion date
- Authorization signatures for contractor and client
- Date of approval
How to Use This Template
- 1
Number each change order sequentially (CO-001, CO-002) and reference the original contract number. This creates a clear paper trail that links every change back to the original agreement. If a dispute arises months later, you can trace every modification.
- 2
Describe the change in specific terms: what is being added, removed, or modified. For plumbing work, include pipe sizes, fixture models, and locations. "Add a hose bib to the garage" is vague; "Install 3/4-inch frost-free hose bib on north garage wall with interior shut-off valve" leaves no room for misunderstanding.
- 3
Always show the cost math clearly: original contract total, plus additions, minus deductions, equals new total. Clients are more likely to approve change orders when they can see exactly how the price changed and why. Break down added costs into materials and labor.
- 4
Get the change order signed before starting any additional work. This is non-negotiable. Verbal approvals lead to "I never agreed to that" disputes. If the client needs the work done urgently, have them sign a photo of the change order on your phone as a temporary measure.
Frequently Asked Questions
When do I need a change order for plumbing work?
Any time the work differs from the original contract scope. Common triggers include: discovering hidden damage (rotted subfloor, corroded pipes), client requesting upgrades (better fixtures, additional outlets), code requirements discovered during inspection, or unforeseen conditions behind walls.
How do I price additional plumbing work on a change order?
Price change orders the same way you price original work: itemized materials at current cost plus your markup, labor at your standard hourly rate. Never discount change order work — it’s unplanned and often more complex than original scope because you are working around existing installations.
Can a client refuse to sign a change order?
Yes. If the client refuses, you have two options: continue with only the original scope (if possible), or stop work if the change is required by code or safety. Document the refusal in writing. Never perform unpaid work — it sets a precedent and devalues your expertise.
Should I stop work until the change order is signed?
For cost-impacting changes, yes. Stop the affected work until you have written approval. For minor adjustments with no cost impact, you can document them after the fact. But any work that changes the price or timeline should always be approved in writing first.
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Plumber Estimating Guide
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