Construction Change Order Template: Free Download for Specialty Subs

Change order: A formal written document authorizing a modification to the original scope of work, contract price, or schedule on a construction project. Both parties (GC and sub, or owner and GC) must sign it before the change is binding.

Constructive change: An undocumented scope addition where the contractor performs additional work without a formal change order, often at the owner's or GC's verbal direction. Constructive changes become payment disputes when the job closes and the sub tries to recover costs that weren't in the original contract.

T&M authorization: Time-and-materials authorization — a GC directive to proceed with work at actual cost plus a markup, without a fixed price. T&M work still requires a signed authorization before you start. Without it, the T&M costs are difficult to collect.

“The template doesn't have to be fancy. It has to be fast enough that your foreman will actually use it instead of saying he'll do it later. Later doesn't exist on a job site.”

K. Oduya , Owner at Oduya Fire Protection

“We added a running contract balance line to every change order. Now our PMs always know the current contract value without calling the office.”

S. Lindqvist , Controller at Summit Plumbing

Why Change Orders Bleed Subs Dry

The construction attorney’s office is full of files that start the same way: a sub did work the GC asked for, the GC disputed the cost, and there’s no paperwork. Change orders are where the actual money is on most commercial jobs — the original bid is competitive by design, and the margin gets made (or lost) on the extras.

The problem isn’t that subs don’t know change orders matter. They do. The problem is the job site rhythm: a GC superintendent walks over at 7am, says “while you’re in there, add another circuit to the panel,” and your foreman says “sure.” No paperwork changes hands. By the time the job closes, that circuit is buried in the wall, nobody remembers it was an extra, and the GC won’t pay for it.

The template doesn’t fix human behavior on a job site. What it does is give you a fast enough process that running a change order takes 15 minutes, not an afternoon — which means your foremen will actually use it.

What the Template Covers

The five fields that every change order must have are scope description, cost breakdown, schedule impact, contract balance update, and signatures. Most subs get the first and last right and skip the middle three.

Cost breakdown is the one that kills margins. Labor hours times burdened rate (wages plus burden — roughly 35-45% on top of wages for most trades) plus materials with markup, plus your overhead allocation. If your company applies a 15% overhead rate and 10% profit on T&M work, it goes on every change order without exception. Partial overhead recovery on change orders is one of the most common causes of jobs that look profitable at the estimate stage and break even at closeout.

Schedule impact gets fought about separately from cost, and GCs will often agree to a cost change while contesting the schedule days. Document them separately. If the extra work added three days because it changed the electrical sequencing in a way that delayed the HVAC rough-in, write that down. Your schedule impact claim needs to explain the causation, not just the number.

Keeping a Running Contract Balance

One field most homemade change order templates leave off: a running contract balance line. Every CO should show the original contract value, the total of all previously approved COs, this CO value, and the new contract total.

This matters because your job costing system needs to track against the right revenue number. If your original contract was $480,000 and you’ve run $62,000 in approved change orders, your WIP schedule should show $542,000 in contract value — not $480,000. Subs who don’t update this end up with under-billed status on their WIP and report lower earned revenue than they’ve actually generated.

Getting It Into Your Job Costing System

A signed change order that never gets recorded is still a problem. When your foreman spends the extra labor budget on the CO scope, the job’s cost-to-complete calculation has no corresponding revenue to match it against. The job looks like it’s running over budget when it’s actually running on budget for the original scope and on budget for the change orders — just unrecorded.

Once a CO is approved, update three records: the contract value in your job costing system, the cost estimate for the affected cost codes, and your WIP schedule for that job. It takes ten minutes. The alternative is spending two hours reconciling the job at closeout.

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Q&A

What should a construction change order include?

A complete change order should include: project name and contract number, CO number and date, description of the scope change (what changed and why), cost breakdown (labor, materials, equipment, overhead, profit), schedule impact in calendar days, updated contract total (original contract + all approved COs to date), and signature lines for both the subcontractor and GC. Missing any of these...

Q&A

Why do subcontractors lose money on change orders?

Three reasons: First, they start work before getting written approval, then the GC disputes whether the work was actually authorized. Second, they don't include overhead and profit markups in the CO price, recovering only direct costs. Third, they don't track cumulative CO totals, so the job costing system shows the original contract value and the CO revenue never gets reconciled....

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What information must a construction change order contain?

At minimum: a description of the changed scope, the agreed price (or T&M basis), the schedule impact, and signatures from both parties. The description needs to be specific — 'additional electrical work per GC direction' is not adequate. 'Install 45 additional duplex outlets in the third-floor conference rooms per RFI #14, dated March 3, 2026' is.

How do I handle a verbal approval from a GC?

Send a written confirmation the same day. An email works: 'Per our conversation today with [GC PM name], we are proceeding with [scope description] under CO #[X] at a price of $[Y]. Please confirm.' If they don't reply, follow up in 48 hours. An unanswered written notice is not the same as a signed CO, but it builds a paper trail. Courts have upheld contractor claims for extra work where the contractor documented the direction promptly, even without a formal signature.

What happens if a GC refuses to sign a change order?

Stop the extra work and issue a written notice that you will not proceed with the changed scope until the CO is executed. If the GC insists and threatens consequences, contact a construction attorney before proceeding. Starting work on an unsigned, disputed change order is the most expensive mistake a sub can make — you perform the work, then spend years trying to collect under a claim or mechanic's lien.

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