Change Order Management for General Contractors

TL;DR: Clean change order management requires written authorization before work starts, priced scope submitted within a defined window (not end-of-project), explicit time-extension language, and a distinction between change orders, Construction Change Directives (CCDs), field orders, and RFIs. GCs who verbal-agree first and price later routinely settle for half of what they spent, and that leakage is one of the biggest hidden drags on profitability.

Every general contractor has lost money on a change order. The owner asked for extra work, you did it in good faith expecting to bill for it later, and when the pay application went in, the owner disputed the scope or the price. Months of back-and-forth later, you settle for half of what you actually spent. Multiply that by every project, and change order leakage is one of the biggest hidden drags on GC profitability.

This guide covers the practical playbook for managing change orders so you actually get paid for extra work you perform.

What Is a Change Order?

A change order is a written agreement between the owner and the contractor modifying the original contract to reflect a change in scope, schedule, or price. Change orders can add work, remove work, or modify the way existing work is performed. They can also adjust the contract sum, the completion date, or both.

Change orders are distinct from:

• Change directives: owner-initiated instructions to proceed with changed work before a full change order is negotiated. Common when speed matters more than pricing certainty.
• Construction change directives (CCD): a formal AIA document authorizing work to proceed with an agreed scope but an unresolved price.
• Field orders: minor clarifications or adjustments that don't affect contract sum or schedule.
• Requests for information (RFI): questions asked of the architect or owner that might lead to a change but aren't changes themselves.

Understanding the difference matters because different documents have different legal weight and different payment implications.

Why Change Orders Are a Problem

The issue isn't that change orders exist. Every project has them. The issue is how GCs handle them:

Problem 1: Verbal Agreements

An owner walks the site, tells the GC "yeah go ahead and add that window," and the GC builds it. Two months later, the owner denies the conversation ever happened. Without written authorization, the GC has no paper trail to enforce.

Problem 2: Delayed Pricing

The GC does the work first and figures out the price later. By the time the change order is priced and submitted, the owner has lost context for why the change was needed and pushes back on the cost.

Problem 3: Missing Scope Clarity

The change order describes the work vaguely. Later, the owner claims the change was supposed to include items the GC didn't price, and the GC ends up covering the gap.

Problem 4: Time Extensions Forgotten

Change orders can add work that extends the project schedule, but GCs often focus on the cost impact and forget to request a time extension. Then they get hit with liquidated damages for late completion on work the owner directed.

Problem 5: Change Orders Accumulated for Later

The GC tracks change orders in a running log and submits them all at once near the end of the project. The owner's CFO reviews the stack, pushes back on everything, and cuts half the claims.

The Right Change Order Process

Here's the process experienced GCs follow to minimize change order disputes.

Step 1: Document the Trigger Immediately

When something happens that might require a change (owner request, differing site condition, design error, scope ambiguity), create a written record within 24 hours. This is usually an RFI, an email to the owner's representative, or a formal change order request form.

The goal: establish a clear record that the event occurred, when it occurred, and what it involved. Even if the price and scope aren't yet defined, you want a contemporaneous record.

Step 2: Request a Formal Change Order Before Performing Work

Unless the contract specifically allows change directives, don't start extra work without written authorization. A signed change order (or written change directive) is your protection. Verbal authorization might hold up in arbitration, but it's not where you want your profit to depend.

Most contracts require written change orders in the General Conditions. If the owner says "just do it and we'll figure it out later," push back and get something in writing, even a short email confirming the instruction.

Step 3: Price the Change Correctly

Two pricing approaches:

Lump sum. You quote a fixed price for the change, and that's what you bill. Pros: clean, simple, owner knows the cost upfront. Cons: if the scope is uncertain, you either pad the price (owner pushes back) or under-price it (you lose money).

Time and materials (T&M). You bill actual labor hours, materials, equipment, and a markup for overhead and profit. Pros: you get paid for actual costs. Cons: harder to estimate the total, owner wants daily tickets and receipts, disputes over hours and rates.

For known scope, lump sum is cleaner. For uncertain or exploratory work, T&M is fairer to both sides. Many contracts specify which method applies to certain types of changes.

Whatever method you use, include in your pricing:

• Direct labor costs (including burden: taxes, benefits, WC, overhead allocation)
• Direct material costs
• Equipment costs (owned or rented)
• Subcontractor costs plus markup
• General conditions impact (extended GC overhead for time extensions)
• Overhead and profit markup (usually 10% to 20% combined)

Step 4: Submit for Approval Before Starting Work

Route the change order to the owner's representative (architect or project manager) for signature. Most owners have a change order approval workflow involving the architect, the construction manager, and the owner. Build time for this process into the schedule.

Step 5: Track the Change Order in a Log

Maintain a change order log for every project with:

• Change order number (sequential)
• Description
• Proposed amount
• Approved amount
• Status (proposed, approved, executed, included in pay app)
• Date proposed
• Date approved
• Time extension requested and approved
• Linked RFI, CCD, or trigger document

At any given time, you should be able to answer "what's our change order status on Project X?" in 30 seconds.

Step 6: Include in Pay Applications

Once a change order is executed, add it to the next pay application. Update the AIA G702 Line 2 (Net Change by Change Orders) and add a new line to the G703 for the change order value. Your Contract Sum to Date should reflect all executed changes.

Step 7: Reconcile at Closeout

Before final pay application, reconcile your change order log against the executed change orders in your contract. Any discrepancies should be resolved before submitting final payment.

Subcontractor Change Orders

Change orders flow down the chain. When the owner requests a change that affects a sub's scope, the GC needs to:

1. Get a quote from the sub for the changed work
2. Include the sub's cost (plus GC markup) in the change order proposed to the owner
3. Once the owner approves, issue a back-to-back change order to the sub
4. Track the sub's change orders in the sub's contract records

This matters for compliance tracking too. A change order may expand a sub's scope beyond their original insurance limits, or require them to update their COI to reflect new project terms. If a sub's compliance falls out of alignment with their changed scope, you have a liability gap.

PaperBoss tracks sub compliance documentation alongside whatever scope they're working, so when a sub's scope changes, you can verify their insurance, W-9, and other documents are still current for the new work. No surprises at closeout.

Common Change Order Mistakes

1. Starting work without written authorization. The easiest money to lose is money you earned before you had a signed change order.
2. Underpricing changes. Changes are often more expensive than equivalent original work because of disruption, mobilization, and re-sequencing. Don't price a change at your original unit rates.
3. Forgetting time extensions. If a change adds 10 days of work, request 10 days of time extension. Otherwise you're on the hook for liquidated damages.
4. Bundling changes at the end. Submit change orders as they happen, not all at once near closeout. Late bundled submissions invite scrutiny and reductions.
5. Not updating subs on change order impact. When a change affects a sub, get their input on pricing and impact before committing to a number with the owner.

Frequently Asked Questions

Can an owner refuse to sign a change order?

The owner can refuse, but that usually means the work in question isn't authorized. If you've already performed the work based on verbal instruction, you're in dispute territory. Document everything and escalate through the contract's dispute resolution process.

What's the difference between a change order and a claim?

A change order is an agreed modification to the contract. A claim is a demand for additional compensation or time that hasn't been agreed. Claims arise when the parties can't reach agreement on a change order, and they follow the contract's dispute resolution process (mediation, arbitration, or litigation).

Do I need to notify my surety about change orders?

On bonded projects, significant change orders may need to be reported to the surety, especially if they increase the contract value substantially. Check your bond's terms and your surety's requirements.

How do I handle change orders on a cost-plus contract?

Cost-plus contracts typically don't use formal change orders for scope changes because the contractor is already being paid actual costs. Instead, changes are documented through project directives or scope modifications, and the contract's guaranteed maximum price (if any) is adjusted accordingly.

Can I charge overhead and profit on subcontractor change orders?

Usually yes. Most contracts allow the GC to apply a markup on subcontractor change orders to cover general conditions, overhead, and profit. The markup percentage is typically specified in the contract (often 10% to 15%). If not specified, it's negotiable.

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This article is for educational purposes only and does not constitute legal or accounting advice. Consult a construction attorney for specific change order and contract disputes.