What Is a Change Order — and How to Handle Them Without Losing Money

Change orders are the number one source of unexpected costs on home renovation projects. Not because contractors are dishonest — though some are — but because most homeowners do not understand what a change order is, when it is legitimate, and when it is a contractor trying to recoup a low bid.

This guide explains exactly what change orders are, how to evaluate them, and how to protect yourself without killing your contractor relationship.

What Is a Change Order?

A change order (CO) is a written modification to the original contract. It documents:

• The change in scope (what work is being added, removed, or modified)
• The change in cost (price increase or decrease)
• The change in timeline (if any)
• Signatures from both parties acknowledging the change

Change orders exist because construction is inherently unpredictable. Even the most detailed scope of work cannot anticipate every condition inside a wall or under a floor. Change orders are how legitimate changes get documented and priced.

The problem is that change orders are also how some contractors make up for a low initial bid.

Three Types of Change Orders

1. Unforeseen Conditions (Legitimate)

When a contractor opens a wall and finds unexpected rot, old asbestos insulation, failed plumbing, or out-of-date wiring, that is a legitimate change order. You are not paying for their mistake — you are paying for a condition that could not have been known without demolition.

How to handle: Accept that these happen. Build a 10-15% contingency into your budget from the start. Request photos and an explanation before approving any additional work, and get multiple assessments for anything over $2,000.

2. Owner-Requested Changes (Expected)

You decide mid-project to add a window where there was not one, upgrade from standard tile to a herringbone pattern, or add a pot filler you forgot to include. These are your changes — you own them financially.

How to handle: Approve these in writing before any additional work begins. A text message saying "yes, let's add the pot filler" is documentation, but a signed change order is better. Never let a contractor proceed on verbal approval.

3. Scope Creep / Contractor-Initiated (Watch These)

This is where it gets complicated. A contractor brings you a change order for work they claim was not in the original scope — but you thought it was. This is the most common source of disputes.

Common examples:

• "Tile installation didn't include the bathroom niche" (should have been in scope)
• "Painting didn't include closet interiors" (should have been discussed)
• "Drywall didn't include corners or trim work" (ambiguous original scope)

How to handle: Go back to the original contract and scope of work. If the language clearly excludes the item, you may owe the change. If the language is vague or the item was reasonably implied by the scope, push back. This is why clear original contracts matter so much.

Red Flags in Change Orders

Price Gouging

Change order pricing often carries inflated margins. A task that costs $200 in materials and 3 hours of labor is not a $1,500 change order — that is 300% markup on time and materials. Compare change order pricing to industry standard labor rates.

Ask for a breakdown:

• Materials: itemized with quantities
• Labor: hours at the agreed hourly rate
• Markup: the contractor's overhead and profit (10-20% is standard, 50%+ is excessive)

Pressure to Approve Immediately

"We need an answer today or we lose our slot" is a pressure tactic. A legitimate change order can wait 24-48 hours for you to review it. If a contractor will not give you time to read and evaluate a financial decision, that is a red flag.

No Written Documentation

"We can handle this verbally" is never acceptable for changes over a few hundred dollars. Verbal agreements are unenforceable and always benefit whoever has the better memory or the better lawyer.

Change Orders That Duplicate Original Scope

The most problematic change orders claim that work clearly implied in the original scope was somehow not included. "Installing cabinets didn't include the upper cabinets" — seriously? Push back hard on these and document your position in writing.

How to Protect Yourself from the Start

The best protection against change order abuse happens before construction starts. If you have not yet read our guides on reading contractor estimates and what permits your project requires, do both before you sign a contract.

1. Get a detailed scope of work. Ambiguous language creates change order opportunities.
2. Negotiate a change order clause. Include in the contract: "All changes must be in writing, signed by both parties, before additional work begins. Contractor may not proceed on verbal approvals."
3. Agree on a T&M rate. Negotiate the time-and-materials rate for change order work before construction starts. Something like $85/hour for carpenter labor and $120/hour for licensed trades is reasonable in many markets. Knowing the rate in advance prevents price surprises.
4. Budget your contingency. A 10% contingency is professional practice. A 15% contingency is smart for older homes.

The Change Order Process — What It Should Look Like

A well-run change order process:

1. Contractor identifies a change (unforeseen condition or owner request)
2. Contractor documents the change with photos, measurements, and a written description
3. Contractor provides a written change order with line-item pricing and any timeline impact
4. Homeowner reviews, negotiates if needed, and signs or declines
5. Work proceeds only after both parties sign
6. Change order is added to the project file; payment is added to the appropriate milestone

This process takes a day. It protects everyone. Any contractor who skips it is operating unprofessionally.

What to Do If You Dispute a Change Order

1. Put your dispute in writing immediately (email is fine, text is fine)
2. Reference the original contract language
3. Request a meeting to review the documentation together
4. Do not release any payment that covers the disputed work until the dispute is resolved
5. If you cannot resolve it, check your contract for the dispute resolution clause — most professional contracts require mediation before litigation

Bottom Line

Change orders are a normal part of construction. Unforeseen conditions happen, plans change, and scope evolves. What separates good projects from bad ones is whether the change order process is clear, documented, and fair.

The rule is simple: nothing gets built without a signature. Every change, no matter how small, goes through the same process: document, price, approve, then build.

If you want a tool to track change orders alongside your overall project budget, our Renovation Budget Calculator includes a change order log that records every modification, its cost impact, and who approved it.