Mid-project surprises are normal. Un-papered surprises get expensive. Here is how a change order works, what a valid one says, and how to keep a fixed price from becoming a moving target.
Licensing, permit, lien and tax rules vary by state and city and change over time. This guide is general information, not legal or tax advice; check with your local building department, state licensing board or a professional for your situation.
Checklist
- A change order is a signed document that amends your contract to record a change in scope, cost, or schedule, and it becomes part of the contract once both of you sign it.
- Sign only before the changed work starts. Work done first and billed later is an unauthorized charge, not a change order.
- A valid change order states the specific change, the reason for it, the itemized cost, the effect on your completion date, and which part of the original plans it amends.
- On a well-scoped remodel, zero to two change orders is normal; five or six usually points to a scope that was under-researched or priced low to win the job.
- Keep every change order, photograph hidden conditions, and track a running total so the final bill holds no surprises.
Halfway through a kitchen remodel, the contractor opens a wall and finds something nobody could see when the bid was written. Fixing it costs money and pushes back the schedule, and the paperwork that sorts this out is the change order. Here is how one works, what a valid one needs to say, and when to keep your pen down.
What a Change Order Is
A change order is a signed document that amends your contract. It records an adjustment to what the job covers, what it costs, or when it finishes, and once both of you sign it, the document joins the contract. California’s Contractors State License Board requires price or scope changes to be made in a written change order that both of you sign before the work changes. Other states set their own rules, so check with your state licensing board, but the core idea holds: a change order is a document, not a conversation.
It is not an invoice arriving mid-job, not a text asking you to approve extras, and not a phone call saying the price went up. A legitimate change order describes the change, states the cost, and gets your written approval before the new work begins. If a contractor does extra work first and sends a bill without your signature, that is work you never authorized, and you can dispute the charge.
Why Change Orders Happen During a Remodel
Three situations generate most change orders:
- Hidden conditions. Nobody can see through walls at the bid stage. Old wiring behind plaster, a rotted sill plate, undersized ductwork, termite damage in framing that looked sound. A contractor who finds rot behind a shower wall had no way to include that repair in the original price.
- Homeowner decisions. You decide mid-project to upgrade the tile, move a doorway, or add a bigger island. Your choice, your cost, but still worth putting on paper.
- Permitting and code requirements. Sometimes a requirement surfaces only after the local building department reviews the plans.
A change order is not itself a sign of a badly run project; the pattern matters more. On a well-scoped remodel, zero to two change orders is normal, and they usually trace back to a hidden condition instead of a homeowner decision. A project producing five or six almost always points to a scope that was thrown together quickly, researched thinly, or priced low to land the job. One remodeling advisory firm estimates the industry average change order rate at 25 to 30 percent of project value.
What a Valid Change Order Should Say
Before any extra work starts, a change order worth signing puts four answers in writing: the specific change, the reason for it, the price, and how it moves your completion date. It should also cite the page or detail of the original plans it amends, so the change ties back to the contract.
| What it should state | Why it matters |
|---|---|
| A precise description of the change | Keeps one change from quietly becoming several |
| The reason for it | Shows whether the cost falls on you or the contractor: hidden condition, homeowner request, or code requirement |
| The itemized price | Lets you verify labor and materials instead of absorbing a lump sum |
| The effect on the completion date | Keeps the schedule inside the signed documents instead of resting on someone’s word |
| A reference to the original plans | Ties the amendment to the contract it modifies |
The form itself should be short; it amends one piece of the job, not an occasion to renegotiate the whole contract. In California, changes to a home improvement contract have to be written, readable, and clear, and they have to tell you your right to cancel or rescind. Requirements differ elsewhere, so ask your state licensing board what it expects.
Here is an illustration with invented numbers. Say you signed a $40,000 kitchen contract and the crew finds noncompliant wiring when a cabinet wall comes out. The contractor hands you a change order describing the repair at $2,400, itemized by labor and materials, adding three working days and citing the plan sheet it amends. You ask which code section applies, sign it, and your total becomes $42,400 on a new completion date.
Verbal Changes and Why They Cause Disputes
“Yeah, go ahead and fix that” is how costs get disputed later. Memories drift and scopes swell; a $900 fix talked over the saw noise can land on the final bill as $1,700. California’s licensing board puts it plainly: any promise made out loud should end up in the written contract. Gaps in documentation are what turn small disagreements into formal disputes.
The caution runs in both directions. Anything you sign as authorization to move forward can become part of the contract, so do not sign until you understand and agree to every term on the page. That applies to the original agreement too; our checklist for what a home improvement contract should say covers the terms worth reviewing before the first change order ever appears.
Tip
Never sign a change order with the description, price, or date left blank. Blank fields can be filled in later, and the paper may still count as your authorization.
How Change Orders Affect Your Budget and Timeline
Every signed change order raises your project total, so track it. Log the date, the change order number, the amount, and the new completion date, and update your budget after each signature. If you are financing the work with a home equity loan or line of credit, the debt is secured by your house, so every unexamined extra costs more than it looks.
A proper contract states a date of completion, and a proper change order states how the change moves it. Payments should track the value of work actually performed rather than run ahead of it. In California, payments cannot exceed the value of work completed, and the down payment is capped at the lesser of $1,000 or 10 percent of the contract price, with no exceptions for special-order materials. If bid vocabulary is new to you, our glossary of remodeling cost terms explains the language before you sign.
Red Flags in How a Contractor Handles Changes
Watch for these patterns:
- The crew starts the changed work before you sign anything.
- The description is vague, such as “additional work as required,” with no price attached.
- You feel pressure to sign on the spot with no time to review or ask questions.
- Change orders arrive in a drumbeat of five or six, which usually points to a bid that was under-scoped to look cheap.
- The contractor resists putting the price or schedule impact in writing.
Any of these is a reason to slow down and ask questions in writing. Clean paperwork protects both of you; dodging it protects only the contractor.
Keeping a Paper Trail From Day One
Good records cost ten minutes and settle arguments. From the day work starts:
- Keep the signed contract and plan set together; every change order should reference them.
- Number change orders in sequence and log each one’s date, price, and schedule impact, along with your running total.
- Photograph hidden conditions before walls are closed back up.
- Confirm conversations about changes with a short follow-up email, even if a formal change order follows.
- Pay only against signed documents, and keep copies of everything you sign.
If a change dispute escalates, this trail is what a state licensing board or attorney general will ask for, and it is what separates a negotiation from a stalemate.
Keep reading
- When a Contractor Job Goes Wrong: what to do when a change dispute or the project itself turns into a real conflict.
- Mistakes to Avoid When Budgeting a Kitchen Remodel: how to build a budget that can absorb a change order instead of assuming none will come.
Homeowners ask
Do I have to sign a change order?
No. You can ask questions, request an itemized price, or decline the change. If the change involves a code or safety requirement, check with your local building department or an independent professional before deciding.
What if I already agreed to a change verbally?
Ask the contractor to put it in a written change order before any new work continues. Rules on verbal agreements vary by state, and a signed document is far easier to enforce if costs are disputed later.
Can a contractor charge me for a change I never approved?
A legitimate change order requires your written approval before the work begins, so a bill for unapproved extra work is a charge you can dispute. Put the dispute in writing and contact your state licensing board or attorney general if it is not resolved.
Are change orders a sign of a bad contractor?
Not by themselves, since hidden conditions are common in remodeling and nobody can see through walls at the bid stage. The warning signs are a pattern of many change orders, vague descriptions, or work billed without signed paperwork.