No change order time extension? You eat the delay

Here is the version of this story I hear most often. A contractor gets asked for extra work mid-job. He prices it properly, writes it up, gets it signed, and does the work. Two months later the job finishes eleven days late, the owner starts talking about liquidated damages or withholding, and the contractor says the words that never work: "But you added all that scope." He did. He proved it. He still lost, because not one of those signed change orders included a change order time extension. The money was documented. The days were not.

That is the quiet killer in change order paperwork. Almost everybody remembers to charge for the extra work. Almost nobody remembers that extra work also eats calendar, and that if you do not claim those days at the moment you claim the dollars, you have effectively agreed to absorb them. This is general information, not legal advice — your contract governs, and you should read yours.

What skipping a change order time extension actually costs you

The damage is rarely a single dramatic event. It stacks quietly:

• Delay damages you pay out of pocket. Many commercial contracts — and plenty of residential ones — include liquidated damages: a fixed dollar amount per calendar day past substantial completion. If the completion date was never formally moved, every day of owner-added work becomes a day you are late.
• Extended general conditions you never billed. Three more weeks on site means three more weeks of supervision, trailer, dumpsters, portable toilets, temporary power and fuel. That is real money leaving your account with no line item behind it.
• Winter, weather and the season you got pushed into. A four-week push in September can drop your exterior work into November. Now you are paying for heat, protection and lower productivity because of a change you never got days for.
• Crew collisions and stacked trades. To claw back a schedule you never got extended, you compress. Compression means overtime, second shifts, and trades tripping over each other — the fastest way I know to turn a profitable job into a break-even one.
• Your subs come after you. If you did not get days from the owner, you cannot pass days down. Your framer, your electrician and your drywall sub all get squeezed, and the smart ones send you a delay claim of their own.
• The relationship. Arguing about lateness at closeout, when the owner is holding retainage, is the worst possible time to relitigate a schedule. It sours a client who was perfectly happy with your work.

None of that shows up on a bid sheet. It shows up as a job that felt busy and finished thin.

Six change order time extension mistakes that get contractors burned

1. Writing "TBD" or leaving the schedule line blank

A blank is not neutral. When the change order form has a schedule field and you leave it empty or write "no change," you have documented in writing that the extra work has zero schedule impact. Owners' reps read those forms later with a highlighter. If the impact is genuinely unknown, say so specifically — for example, "schedule impact to be determined once the revised structural detail is issued; contractor reserves the right to request an extension" — rather than leaving a hole.

2. Counting only the hours of extra labor

Adding two days of tile work does not mean two days of schedule. It might mean twelve, once you count the reselect, the ten-day material lead time, the substrate prep and the fact that your tile guy is on another job for a week. The question is never "how long does the work take?" It is "how much later does this job now finish?" Those are different numbers, and the second one is the one that belongs on the change order.

3. Signing a change order that waives all delay claims without reading it

Plenty of owner-issued change order forms contain accord-and-satisfaction or waiver language — wording that says acceptance of this amount is full compensation for all costs and time impacts, including cumulative and ripple effects. Sign a stack of those and you may have signed away every delay claim on the job. Read the fine print on forms handed to you, and if the language is broad, ask about it before you sign.

4. Missing the notice window in your own contract

Most construction contracts require written notice of a delay or a request for a time extension within a set number of days after the event — often somewhere between seven and twenty-one, depending on the form. Miss the window and the claim can be waived on procedure alone, no matter how right you are on the facts. Find that clause in your contract today and write the number on the inside of your job binder.

5. Ignoring the cumulative pile-up

Fourteen change orders, each "only a day or two," is not fourteen days. It is fourteen interruptions, fourteen resequences, and a crew that never got a clean run at anything. Track the running total. When your log shows the completion date has slipped 23 days across the job, that is a conversation to have in month three — not at punch list.

6. Getting the days verbally

"Yeah, obviously that pushes you out a couple weeks" is worth nothing in December when the owner's memory has improved. Same rule as pricing: if it is not signed, it did not happen. I've written before about how change order disputes actually play out, and the pattern is always the same — the party with the signed paper wins.

How to write a change order time extension that holds up

You do not need a scheduling consultant for a kitchen remodel. You need five things on the same signed page as the money:

1. The event and the date it happened. "Owner selected alternate cabinetry on 8/14/26."
2. The work being added or changed. Specific scope, not "misc. extras."
3. The price. Labor, material, equipment, markup, tax — broken out.
4. The calendar days added and the new completion date. Both. Write the days ("add 12 calendar days") and restate the date ("revised substantial completion: 11/06/26"). The restated date is what kills arguments.
5. Both signatures and the date signed.

One sentence does most of the work: "The contract completion date is extended by ___ calendar days, from ___ to ___, as a result of this change." Put that line on every change order you issue, even when the answer is zero days — because then "no impact" is a decision you made deliberately, not a blank someone else gets to interpret.

A few habits that make this stick: use calendar days rather than working days unless your contract says otherwise, so nobody argues about holidays. Issue the change order before the work starts, not after. And keep a running log with a "days added" column so the cumulative number is always visible.

Two free ways to get the days on paper

There are two kinds of contractors on this, and both approaches work. Pick the one that matches how you already run your paperwork.

If you live in spreadsheets

Use the free Excel change order template. It is a proper change order form with line items, markup, tax and the revised contract value calculated for you, plus a change order log so you can see every change on the job in one place — including the running schedule impact. You print it, sign it, scan it, file it. No account, no subscription, nothing to learn. If your desk already runs on Excel, that is the shortest path from "we talked about it" to "we signed it."

If you want it signed from a phone

Use the free digital change order tool. You fill in the change, the price and the added days, and the client gets a clean, professional change order they sign on their phone — usually within the hour, because there is nothing to print. The revised contract value updates itself and every signed change order is timestamped and stored, so the paper trail builds itself while you are on site. Same paperwork, less chasing. It costs nothing either — here is why it's free.

Plenty of crews use both: the spreadsheet for internal pricing and the digital version for getting the signature. Either way, the rule does not change — download the free change order spreadsheet or create your first one online, but put the days on the form.

A 60-second check on your current job

Do this before you read anything else on the ChangeOrdersPro blog:

• Pull every signed change order on your active job.
• Count how many state a number of calendar days. If the answer is "none," you are carrying the entire schedule risk of every change the owner asked for.
• Add up the days you believe you are owed and write one email today requesting a formal time extension for the cumulative impact, with the change orders listed.
• From the next change forward, no signature without a schedule line.

The extra sentence takes ten seconds. Not having it has cost contractors far more than that.

Frequently asked questions

Does every change order need a time extension?

No — plenty of changes genuinely have zero schedule impact. But every change order should state the schedule impact explicitly, even if that number is zero. Writing "no change to contract time" is a decision; leaving the field blank is a gap that someone else gets to interpret later, usually not in your favor.

How many days should I ask for on a change order?

Ask for the number of days the project completion date actually moves — not the number of days the extra work takes. Include material lead times, resequencing, inspections, and the gap before your sub can get back on site. If you cannot calculate it yet, say the impact is to be determined and reserve the right to request an extension once the information is available.

Can I still claim a time extension after the change order is signed?

It gets much harder. Many change order forms contain language stating the agreed amount is full compensation for all cost and time impacts of that change, and most contracts require written notice of a delay within a specific window. Read the form before you sign it and raise the schedule question at the same time you discuss the price.

Is there a free change order template that includes the schedule?

Yes. The free Excel change order template on this site has fields for calendar days added and the revised completion date, along with automatic pricing math and a change order log for the whole job. If you would rather have the client sign from a phone, the free online tool captures the same information and timestamps the signature.

Is this legal advice?

No. This is general information, not legal advice. Contract terms, notice requirements and delay rules vary by contract and by state, and they change. Confirm the specifics with a licensed attorney or your state's licensing board before relying on them.

Daisy Porter

Co-Founder, ChangeOrdersPro

Daisy writes about the unglamorous side of running a build — the paperwork, the change orders, and the conversations that keep a job profitable. ChangeOrdersPro is the free tool her team built so contractors can send a professional change order and get it signed from a phone in about 30 seconds.