A homeowner asks for two extra outlets while the electrician is already there. The remodeler finds damaged framing after opening a wall. A customer points across the yard and says, “Can you handle that too?”
The extra work may be completely reasonable. Starting it from a driveway conversation is not.
A solid contractor change-order process answers four things before the changed work begins: what changed, what it costs, what it does to the schedule, and who approved it. Then it carries that approval into the crew record and final invoice.
This is an operating process, not a substitute for contract language or legal advice. Home-improvement rules vary by state and sometimes by city. Have your contract and change-order form reviewed for the places where you work.
Define what counts as a change
A change order is not only for the customer who adds a bigger project halfway through the job. It should also cover work removed from the scope, material substitutions, hidden conditions, design revisions, permit-driven changes, and schedule changes tied to any of them.
Start with the original agreement. The change record should point to the affected scope instead of rewriting the whole job from memory.
Use one of these reasons on every request:
- Customer-requested addition or deletion
- Hidden or unforeseen site condition
- Material or equipment substitution
- Code, permit, engineering, or inspection requirement
- Correction to the original scope or documents
- Contractor-proposed alternative
The label matters because the next decision can change. A customer upgrade is not handled the same way as work needed to correct a contractor error. Do not hide a correction inside a vague extra-work charge.
Capture the request before anyone prices it
Give the office and field team one place to start a change request. A text thread can provide evidence, but it should not be the complete record.
The first record should include:
- Job and customer
- Date and person requesting the change
- Exact location on the property
- Description of the requested or discovered condition
- Photos, measurements, plans, or inspection notes
- Work that may need to pause
- Deadline for a decision
If a crew opens a wall and finds rot, they should document the condition before removing the evidence or covering it. If a customer asks for another feature, the field lead should repeat the request in plain language and send it for pricing.
That first record is a request, not approval. Marking it that way stops a casual conversation from becoming an accidental promise.
Show the full price and schedule effect
The customer needs more than one added number.
Price the labor, materials, equipment, subcontractor work, permits, disposal, and other direct costs that apply. Show credits for deleted work or unused materials. Apply overhead, markup, tax, or allowance treatment according to the signed contract and local requirements.
Then look at time. A change can add three hours of labor but move the completion date by a week because a special-order part must arrive first. It can also affect inspections, subcontractor sequencing, access, or another part of the job.
The AIA’s current best-practices paper says the client and contractor are the parties that may approve changes to the contract sum or time. It also recommends documenting the reason for each change and communicating schedule or cost effects. Residential contractors may use different forms and roles, but the operating lesson holds: show money and time together.
A useful proposal states:
- The original scope affected
- The added, removed, or substituted work
- The price added or credited
- The revised contract total
- The days added, removed, or still under review
- The revised completion date when known
- Any payment due for the change and when
- How long the proposal remains open
If you cannot determine the final price yet, do not write “TBD” and release unlimited work. Define the pricing method, documentation required, approval limit, and not-to-exceed amount. Have counsel confirm that your form and process allow that approach.
Name the people who can approve it
The person standing next to the crew may not be authorized to change the contract.
Record the customer or owner representative who can approve price and schedule changes. Do the same inside the company. A technician may identify a needed change without having authority to quote it. A salesperson may discuss an option without authorizing production to start.
Put those limits in the job record:
- Who may request a change
- Who may price it
- Who may approve it for the contractor
- Who may approve it for the customer
- Who releases the work to production
This is where a lot of “but I thought you said” problems begin. Everyone remembers the conversation. Nobody remembers who had authority.
Do not treat a text reply as the whole process
A customer text that says “go ahead” can be useful evidence. It may not satisfy the contract or law that applies to the job.
California’s Contractors State License Board says changes to covered home-improvement contracts must be in writing. Massachusetts says modifications to covered home-improvement contracts must be written and agreed to by both parties. The thresholds and required language differ, which is exactly why a national article cannot tell you what your local form must contain.
Use the approval method required by your contract and jurisdiction. Give the customer a completed copy. Keep the version that shows the scope, price, time effect, signatures or other required approval, and approval date.
The written approval should come before the changed work starts unless a valid emergency or contract procedure says otherwise. The AIA best-practices paper also advises against issuing a change order until the client approves it in writing.
Give the crew a clear release status
A signed document sitting in an inbox does not help the crew.
Every change request needs a visible status. Keep it simple:
- Requested
- Pricing in progress
- Sent for customer approval
- Approved and released
- Declined or expired
- Completed and ready for billing
Only “approved and released” authorizes the changed work. If the original task can continue safely, the crew continues that task. If proceeding would hide the condition, create rework, or make the change unavoidable, pause the affected portion and escalate it.
The release should include the current document, updated drawings or photos, material instructions, schedule change, and any inspection requirement. The field lead should acknowledge it before work begins.
Carry the change into the invoice and closeout
The approval is not done when the customer signs. It is done when the field record, job cost, schedule, and invoice all agree.
Give every change order a unique number. Use that same number on purchase orders, time entries, photos, subcontractor documents, schedule notes, progress billing, and the final invoice. Record credits with the same care as additions.
Before billing, confirm:
- The approved work was performed
- The work matches the approved version
- Required inspections or customer selections are complete
- Actual quantities are documented when the price depended on them
- The invoice uses the approved amount or pricing method
- The revised contract total is correct
- The customer received the final change record
This catches the ugly version of the process: the crew completed revision two, accounting billed revision one, and the customer remembers the first conversation.
Audit one recent changed job
Pick a job with at least one added, deleted, or substituted item. Follow it from the first request through the final invoice.
Can you find the reason, photos, affected scope, price, schedule effect, authorized approval, crew release, completion evidence, and matching invoice without searching three phones and two inboxes?
If not, fix the handoff before buying another form. A form will not solve a process that still lets field conversations skip pricing, approval, production, or billing.
Contractor Systems can keep lead and customer conversations together while your estimating, field-service, and accounting tools continue to run the job. Review the available integrations and then see the lead-to-booking workflow in action. Use that same handoff discipline after the sale so an approved change does not disappear between the driveway and the invoice.
