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Construction change order form generator

A change order is the written amendment that changes a contract's scope, price or time after it is signed. This one is a working form: describe the change, price it line by line with your markup, and it works out the new contract sum and completion date and sets out the signature blocks. Switch it to a change order request when you are pricing work that has not been approved yet.

How to fill it in

  1. 1Pick the form. Contractor and subcontractor, or owner and contractor. Then choose a request if the price is not agreed yet, or a change order if it is going out for signature.
  2. 2Describe the change. Location, scope, the drawing, sketch or RFI it came from, and what is excluded. A reviewer should be able to price it from your words alone.
  3. 3Price it in lines. Labour, material, equipment and subcontract, each at cost. Enter the overhead and profit your contract allows, and the lower markup on subcontract work if it sets one.
  4. 4Enter the running sum. Original sum and the net of every change order already signed. The form works out the sum before this one and the new sum after it.
  5. 5Ask for the days. Calendar days added and the current completion date. The new date is computed for you.

On the example, 4,800.00 of the sub's own cost takes 15% overhead and profit (720.00), the electrician's 1,600.00 takes 5% (80.00), and CO-003 comes to 7,200.00. Added to the 140,800.00 already agreed, the subcontract sum is now 148,000.00, and three days move completion from 2026-12-18 to 2026-12-21.

Why unsigned change orders go unpaid

Extra work gets directed on site, by a super or a project manager, usually with a deadline and no paper. The crew does it. A month later it turns up on your pay application as a line nobody signed, and the reviewer strikes it. Now you are arguing scope, price and whether anyone asked for it all at once, with the work already behind the drywall.

Most subcontracts say changes must be authorised in writing, and plenty add that extra work done without one is at your own risk. Read your changes clause (the construction payment terms guide covers what to look for) and assume it is the strict kind until you know otherwise. A signed change order turns a disagreement into a contract amount. You can bill it, it counts in what you can claim if the job ends in a lien or a bond claim, and it outlives the project manager who approved it.

Before the crew moves

If the work cannot wait for a signature, send the request the same day with your price or a not-to-exceed figure and the words “proceeding at your direction.” A dated email is weaker than a signature. It is far stronger than a phone call.

From signed change order to the next pay application

An approved change order is never folded into an existing line. It goes onto the schedule of values as its own line, under its own number, and it moves the contract sum. On the next pay application it shows up twice: in the net change by change orders at the top, and as a new row on the continuation sheet, billed by percent complete like any other line.

Schedule of values after three change orders
LineDescriptionScheduled value
BaseOriginal scope, all schedule lines136,000.00
CO-001Relocate condensate drains, level 22,600.00
CO-002Added VAV box, corridor 22,200.00
CO-003Exhaust fans, tenant kitchen A-37,200.00
Subcontract sum to date148,000.00

Bill the change-order line the way the progress billing guide describes: percent complete, in the period the work is done, and only once the order is signed. Expect retainage to come off it at the contract's rate unless the change order says otherwise; the retainage calculator shows what the line will actually pay.

Pending and approved: price both the same way

Price a request exactly as you would price the signed order: the same cost lines, the same markup, the same days. The number on the request usually becomes the starting point for the number on the order, and a loose request invites a counter that starts lower. Keep pending requests in a log by number with the date sent, so at month end you can see what is signed, what is waiting, and for how long.

Where a change sits, and whether it can be billed
DocumentPriceBillableSchedule of values
Change order requestProposed, not agreedNoKept in your change log
Signed change orderAgreedYes, from the next applicationNew line, own number
Construction change directiveWork ordered, price openOnly as the contract allowsPer the contract

On AIA-form jobs the owner-level change order is G701–2017, a three-party form signed by the owner, contractor and architect; between a contractor and a subcontractor the matching form is G701S–2017. When owner and contractor cannot agree on price or time, AIA's construction change directive, G714–2017, orders the work to go ahead while the number is settled. This generator is not an AIA document. It carries the same information (the sum before, this change, the sum after, the days and the completion date), so whoever receives it finds what they expect where they expect it.

Ask for the days on the same form

Time is the half of a change order that gets dropped. If the change adds work that pushes your finish, put the days on the form you are pricing, not in a letter later. A change order signed with nothing in the time field is easy to read as your agreement that the change needed no time, and that reading surfaces when the job finishes late.

The generator counts calendar days from the current completion date; convert if your contract counts working days. When the full effect is not knowable yet, say a change that reshuffles the sequence for other trades, tick the reservation box. It states that the order covers the direct cost and time listed and that you reserve further time and cost for delay or cumulative impact. Whether a reservation holds depends on the contract and the state, and many owners strike it. Asking costs nothing.

Credits

For deleted scope, set Direction to Credit. Whether markup comes back on a credit is a contract question; set the percentages to match.

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