Change Order Notice Rules: What General Contractors Should Verify Before Work Changes

Change orders are not only pricing events. They are contract administration events. A general contractor can identify legitimate extra work, price it fairly, and still create a collection problem if the notice, approval, documentation, or timing process is missed.

This guide is not legal advice. Change order rights depend on the contract, project documents, state law, owner conduct, notice provisions, waiver language, dispute process, and facts. The goal here is practical: know what to verify before work changes.

For the pricing side, read General Contracting Pricing Guide. For scope gaps that become change disputes, read 7 General Contracting Estimating Mistakes That Kill Profit.

Why Notice Rules Matter

When work changes, the field conversation often moves faster than the contract process.

An owner asks for a change. A designer clarifies a detail. A hidden condition appears. A subcontractor says the scope is not included. A superintendent directs work to keep the schedule moving. Everyone agrees something needs to happen.

The risk is that "everyone knew" may not be enough. Many contracts require written notice, written pricing, written approval, time-impact documentation, or a specific form before the contractor can recover cost or time.

That does not mean every missed notice kills every claim. It means the GC should not treat notice rules as paperwork.

What to Check First

Before changed work starts, identify the controlling documents:

• Prime contract
• General conditions
• Supplementary conditions
• Change order article or clause
• Claims article or clause
• Notice article or clause
• Allowance and unit-price provisions
• Schedule and delay provisions
• Subcontract change provisions
• Owner approval authority
• Architect, engineer, or construction manager authority

Standard forms such as AIA and ConsensusDocs can provide structure, but many projects modify them. The modified project documents control the job.

Change Order, Directive, or Claim

Different contracts use different terms, but the operating distinction is important.

AIA materials distinguish between agreed change orders and other change mechanisms such as construction change directives. ConsensusDocs materials also show that standard construction document systems often include separate forms for change orders and directives.

The exact label matters less than the process attached to it.

Notice Checklist

For any changed condition, check:

1. What triggered the change?
2. When was it first discovered?
3. Who must receive notice?
4. What form must notice take?
5. How many days are allowed?
6. Must notice be given before proceeding?
7. What supporting documentation is required?
8. Does the request include contract time?
9. Does the request include overhead and profit?
10. Does the owner, architect, engineer, lender, or CM need to sign?

Do not rely on memory. Put the contract requirements into a change-order checklist before the project starts.

Field Documentation

Change order documentation should be created while the work is happening, not reconstructed at the end of the month.

Capture:

• Date of discovery
• Photos and location
• Drawing, spec, RFI, or field condition involved
• Direction received and from whom
• Labor hours
• Material tickets
• Equipment time
• Subcontractor quotes
• Schedule impact
• Weather or access impact
• Owner or design-team correspondence
• Temporary protection, cleanup, or rework

The documentation should connect the changed condition to cost and time. A pile of receipts does not always explain why the receipts exist.

Pricing the Change

Pricing should follow the contract. That may involve unit prices, time and material rates, agreed markups, negotiated lump sums, allowance adjustments, or specific forms.

Before submitting, check:

• Direct labor
• Labor burden
• Materials
• Equipment
• Subcontractor cost
• Supervision
• Project management
• Cleanup
• Protection
• Testing and inspections
• Overhead and profit
• Bond or insurance impact
• Schedule extension or acceleration cost

Do not forget contract time. A change that adds cost may also affect sequence, procurement, inspection, or completion.

Subcontractor Flow-Down

The GC can lose money when the subcontractor change process and owner change process do not line up.

Check:

• Subcontract notice deadlines
• Subcontract backup requirements
• Markup rules
• Approval authority
• Whether the sub may proceed before written approval
• Whether the sub's time impact must be submitted separately
• Whether owner approval is required before subcontract payment

If the sub has a shorter notice deadline than the prime contract, the GC needs to know that at kickoff.

Also check whether the subcontract lets the GC issue direction before the owner approves the corresponding change. If the sub can proceed and bill while the GC is still waiting on owner approval, the GC may be financing disputed work. That may be acceptable on some projects, but it should be a deliberate risk decision rather than a surprise.

Common Mistakes

Avoid:

• Starting changed work on verbal approval only when the contract requires writing
• Missing the first notice deadline while waiting for final pricing
• Pricing cost but forgetting contract time
• Submitting a lump sum with no backup when backup is required
• Letting the wrong person approve field changes
• Treating RFI responses as automatic change approvals
• Assuming an allowance overage is approved without following the contract process
• Waiting until pay application time to assemble documentation

The issue is not whether the owner is reasonable. The issue is whether the GC can show the change was handled under the agreed process.

What to Put in the Project Startup Meeting

At project startup, confirm:

1. Who can authorize changes.
2. Who receives notice.
3. Required notice deadline.
4. Required form.
5. Backup documentation standard.
6. Markup rules.
7. Time-extension process.
8. Emergency-work process.
9. Subcontractor change workflow.
10. Payment application treatment for pending changes.

This should happen before the first dispute, not after.

What to Verify With Counsel

Ask counsel or a qualified construction advisor about:

• Enforceability of notice provisions in the project jurisdiction
• Waiver language
• Oral direction and course-of-conduct issues
• Emergency work
• Claims preservation
• Pay-if-paid or pay-when-paid implications
• Lien or bond claim timing
• Public project notice requirements

The ConsensusDocs article on notice and timing provisions makes the practical point clearly: timing provisions get scrutiny when disputes arise. Treat them like project controls.

Final Change Review

Before work changes, confirm:

• The project team knows the notice deadline.
• The person directing the work has authority.
• Written notice is sent when required.
• Pricing includes cost and time.
• Backup is collected daily.
• Subcontractor and prime contract processes are aligned.
• Pending changes are tracked separately from approved changes.
• The PM reviews unresolved changes every week.

Change-order discipline is not adversarial. It is how the GC keeps project decisions visible before they become margin loss.