Use AI to draft clear, professional change order letters when plumbing jobs expand beyond the original scope.
1. Open ChatGPT or Claude and describe the original job scope and what changed. Be specific: what did you originally quote, what additional work is now needed, and why it wasn't part of the original plan. 2. Ask AI to draft a professional change order letter that explains the new work, the reason for the change, and the additional cost. The tone should be respectful and clear — you're not blaming anyone, just documenting the reality. 3. Review the draft and add any job-specific details AI might have missed: exact costs, time required, or any choices the customer needs to make about materials or approach. 4. Ask AI to create a simple approval section at the bottom where the customer can sign or reply with agreement. This protects you and keeps everything transparent. 5. Copy the final version into an email or text, send it to your customer, and keep a copy for your records. This ensures you get paid for extra work and avoids awkward conversations later about "I didn't know that would cost more."
Try this prompt today
“I'm a plumber and need to write a change order letter for a customer. Original job: replace a leaky kitchen faucet for $350. During the job I discovered the shutoff valves are corroded and need replacing, and there's minor water damage to the cabinet that should be addressed. Additional work will cost $220 and take 1.5 extra hours. Write a polite, professional change order letter that explains the situation clearly, includes the new cost, and has a simple approval line at the bottom for the customer to sign or agree to.”
March 23, 2026
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