Change orders: why unapproved extras cost homeowners the most

A change order is a written agreement that changes the contract: the scope, the price, the schedule, or all three. It is the mechanism by which "while we are in there, could you also…" turns into a number both sides have agreed to.

When change orders are done properly, the final bill contains no surprises. When they are not, the final bill is the surprise — and by then the work is built and the leverage is gone.

The arithmetic that should govern every job

There is only one formula worth memorising:

Current contract value = original contract + approved change orders

Not verbal agreements. Not emails saying "sounds good". Not work that has already been done. Approved change orders. If a number cannot be traced to the original contract or an approved change order, it is not part of the contract price, and both sides should want it that way.

What a change order needs to say

1. A number. CO-001, CO-002. Sequential, so a missing one is visible.
2. What is changing, described well enough that somebody can price it independently.
3. Why — owner request, unforeseen condition, design change, code. The reason matters later when working out who pays.
4. The cost, as one figure. Credits are negative numbers; deleted scope should reduce the contract.
5. Days added. Extra work almost always means extra time, and unrecorded time is how a schedule dispute starts.
6. A signature or a recorded approval, before the work begins.

The three states that matter

Keeping the pending ones visible is nearly as important as the approved ones. "We are at $304,148 and there is another $15,665 on the table" is a sentence an owner can plan around. Discovering both at once at the end is not.

For homeowners

• Ask for the change order before the work, not after. After, you are negotiating about something already built.
• Be wary of "we will sort it out at the end". That sentence has cost homeowners more money than any other.
• Get the schedule impact in writing too. Extra work is a legitimate reason for extra time — but only if it is recorded when it happens.
• Keep a running total. If you cannot say what the contract is worth today, you cannot tell whether a payment request is reasonable.

For contractors

Change orders protect you more than they protect the owner. Unpapered extras are the single most common reason contractors do not get paid for work they genuinely did. A signed change order turns an argument into an invoice.

In Punchlist360 the contract value is derived rather than typed: original plus approved change orders, calculated in one place. A draft or submitted change order shows as pending exposure and does not move the contract until somebody actually approves it — and once approved it cannot be quietly edited, only superseded by another.