How to Review a Contractor Change Order

Start with the original quote

Every change-order review starts with the original quote or contract. Look for the scope language, exclusions, allowances, hidden-condition terms, material selections, payment schedule, warranty, permit responsibility, and change-order process. The change order should connect back to one of those items.

If the original quote already included the work, the contractor should explain why the new request is separate. If the original quote excluded the work, the change order should point to that exclusion. If the original quote was unclear, ask for a written explanation of how the contractor is interpreting the scope.

Do not rely only on memory. Home projects create a lot of conversations, and verbal assumptions can drift. Put the original quote beside the change order and mark the exact line that explains why the new work is or is not included.

Identify the type of change

A change order usually falls into one of several categories. Hidden-condition changes happen when work exposes damage, unsafe conditions, old materials, missing framing, bad decking, subfloor problems, plumbing issues, wiring issues, moisture, rot, or code concerns that were not visible before work began.

Selection changes happen when the homeowner chooses a different fixture, finish, product line, pattern, color, appliance, cabinet, window, siding profile, decking material, or system option than the original quote assumed. These changes are often legitimate, but they should still show material differences, labor differences, lead time, and any credit for items removed from the original scope.

Scope-gap changes happen when a task was not clearly included or excluded in the original quote. These deserve careful review because they often reveal comparison problems between quotes. A cheaper quote may have looked attractive because it did not include the item now appearing as a change order.

• Hidden condition: something was discovered after demolition, removal, opening, or inspection.
• Owner selection: the chosen product or finish differs from the quoted assumption.
• Code or permit requirement: the work must change because of inspection, safety, or compliance requirements.
• Scope gap: the original quote did not clearly say whether the work was included.
• Contractor correction: the work fixes a mistake, damaged work, ordering issue, or installation problem.

Review the pricing breakdown

A useful change order should not be just one new total. Ask for enough detail to understand the amount. That does not mean every nail or screw needs its own line, but labor, materials, disposal, equipment, permits, subcontractor work, markup, and tax should be understandable for the size of the change.

Compare the amount with the original contract amount. A small change may still matter if it repeats several times. A large change should come with stronger documentation, photos, measurements, inspection notes, product details, or written explanation. The larger the change, the less comfortable you should be with vague language.

If the change removes something from the original scope, ask whether there is a credit. For example, if you upgrade material, the final change should usually reflect the difference between the original allowance and the new selection, plus any labor impact, rather than simply adding the full cost of the new item on top.

Check schedule and approval terms

Change orders can affect the timeline. Some changes stop work until a decision is made. Others require material ordering, inspection, subcontractor scheduling, drying or curing time, or sequencing changes. Ask whether the change affects the start date, completion date, access to the home, or other trades.

Approval terms matter just as much as price. A change order should say whether work can continue before approval, who can approve it, how approval is documented, and when payment is due. If the contractor has already performed the extra work without written approval, ask why approval was not requested first and how future changes will be handled.

Keep evidence and decisions together

Save the original quote, the change order, photos, messages, inspection notes, selection documents, invoices, and approval records in one place. A clean record helps you understand what changed and prevents the same decision from being debated several times.

For hidden conditions, ask for photos before covering the work. For material changes, save the selected product name, model number, finish, quantity, and order date. For code or permit changes, ask what inspection or requirement triggered the change. For schedule changes, ask for the updated target date or next milestone.

Change-order review checklist

• Compare the change order against the original quote or contract.
• Identify whether the change is hidden condition, owner selection, code requirement, scope gap, or correction.
• Ask for a written description of the added, removed, or changed work.
• Request a labor, materials, disposal, permit, markup, and schedule breakdown where relevant.
• Ask for photos, measurements, inspection notes, or product details when the change is based on evidence.
• Confirm whether the change affects warranty, cleanup, final payment, or inspections.
• Require written approval before extra work continues whenever possible.
• Save the approved change order with the original quote and payment records.

Example: damaged subfloor after flooring removal

A flooring contractor removes old flooring and finds damaged subfloor near an exterior door. The contractor sends a change order for additional repair work. A weak change order says only subfloor repair needed, additional cost due now. That may be true, but it is not enough detail for a confident approval.

A stronger change order explains the damaged area, includes photos, gives approximate square footage, says why the repair is needed before new flooring can be installed, separates labor and material, explains whether disposal is included, and states whether the schedule changes. It also references the original quote language about hidden subfloor conditions.

The homeowner can then ask practical questions: Was this damage visible before removal? Is the repair required for the new flooring warranty? Is there a smaller repair option? Will trim, transitions, or door clearance change? Does this affect final payment timing? Those questions turn a surprise into a written decision.

Change-order review table

Contractor red flags

• The contractor asks for approval without a written description of the changed work.
• The change order gives one total but no labor, materials, disposal, permit, or markup context.
• The work has already been completed even though the original agreement required written approval.
• The change seems to cover work that the original quote already described as included.
• The contractor cannot explain whether the change affects schedule, warranty, cleanup, or final payment.
• Multiple small change orders appear for items that should have been discussed during the original quote review.

Questions to ask before hiring

• Which line in the original quote makes this a change order?
• What evidence supports the change, and can I see photos or measurements?
• Can you separate labor, materials, disposal, permits, markup, and any credit?
• Does this change affect warranty, inspections, cleanup, or the project schedule?
• What happens if I do not approve this change?
• Can the revised scope and payment timing be confirmed in writing before work continues?

Related tools and references

• Change Order Checker
• Contractor Quote Checker
• How to Avoid Surprise Change Orders
• How to Review Contractor Allowances
• Contractor Payment Schedule Guide
• Methodology
• Disclaimer

How to use this guide with a real quote

• Use the Change Order Checker before you approve extra work. Enter the original contract amount, requested change amount, reason, schedule impact, and documentation signals. The output is not a decision for you; it is a checklist of what to verify.
• If the change order is a large share of the original contract, ask for stronger documentation. Large changes deserve clearer scope, evidence, price breakdown, and written approval because they can alter the project budget and final payment expectations.
• If the reason is an owner selection, compare the new selection with the original allowance or product assumption. Ask whether the change reflects only the material difference or whether labor, accessories, waste, lead time, and installation method also changed.
• If the reason is a hidden condition, ask what made the condition hidden, whether repair is required before continuing, whether there are options, and whether the contractor can show photos before covering the work.
• If the reason is a scope gap, compare other quotes if you have them. A change order may reveal that one contractor priced a narrower job than another. The issue is not only the extra cost; it is whether you understood the original scope.
• Keep approvals organized. A change-order log with date, description, amount, schedule impact, approval status, and payment timing can prevent confusion when final invoice and punch-list conversations happen.
• Do not use this guide as a substitute for qualified professional review when the change involves safety, structural work, electrical work, plumbing, insurance, permits, or legal contract questions. Use it to prepare better documentation requests.
• A clear change order can be reasonable even when it is frustrating. The goal is not to reject every extra charge. The goal is to approve only changes that are written, understandable, connected to the scope, and priced in a way you can review.

FAQ