The Change-Order Playbook: What to Do When the Job Grows Mid-Work

A change order is a sale you have to make standing in a driveway with your gloves on and the crew waiting. The tear-off found rot. The panel is older than the photos suggested. The customer wants two more units while you’re already there. Whatever the reason, the job you quoted is no longer the job in front of you, and the next ten minutes decide whether you get paid for the difference or absorb it to keep things friendly. Most shops handle this moment by feel. A playbook does better.

The change order is won before the crew arrives

Change orders feel awkward because they arrive as a surprise to the customer. The fix is upstream, in the estimate. Name the likely surprises before they happen, in writing, at the point where the customer is still deciding rather than already committed.

A roof estimate that says the price assumes sound decking, that rotted sheets are replaced at a stated price per sheet, and that you will photograph and call before replacing any, turns a confrontation into a clause the customer already agreed to. The same applies to an HVAC quote that names line-set condition and panel capacity as unknowns, or a treatment plan that states up front what an additional session costs if the first course does not get there.

Two things are worth standardising. First, a short list of the four or five conditions you genuinely cannot see from outside on a typical job. Second, a per-unit price for each one. If you cannot name the price in advance, you will invent it under pressure in someone’s driveway, and prices invented under pressure are always low.

Three kinds of change, and only one is a negotiation

Every mid-job change falls into one of three buckets, and sorting it before you open your mouth is most of the work.

Customer-requested additions. They ask for more while you are there. This is the easy one and the most consistently under-charged. Price it at your normal rate. Being on site already saves you the mobilisation cost, so a modest break is defensible — but discounting because the ask feels small is how a day of extra labour ends up free.

Discovered conditions. You open something up and find what nobody could see. Not your fault, not theirs. This is where the estimate clause earns its place. Photograph it before you touch it, quote from the price you already published, get approval in writing, then continue.

Your own errors. You measured wrong, ordered the wrong part, mis-scoped the job. This is not a change order; it is your cost. The fastest way to lose a customer permanently is to bill them for your mistake under a label that sounds procedural. Say what happened, absorb it, move on. The return on eating a bad measurement is higher than the invoice you would have written.

The failure mode here is rarely charging too much. It is treating all three the same way.

The on-site sequence

Stop work on the affected area first. Continuing while you negotiate signals that the work was going to happen anyway, which weakens the ask and makes the invoice feel like a fait accompli.

Photograph the condition — one wide shot, one close shot. Photos do the arguing so your technician does not have to.

Call rather than text if the change is material. A text is fine for a small addition; a significant discovery deserves a voice. Lead with what you found, then what happens if it is not addressed, then the price, then the effect on the schedule. That order matters. A number lands very differently after the consequence than before it.

Offer options wherever options genuinely exist: fix it fully now, fix the critical part now and schedule the rest, or document it and defer with a signed acknowledgement. A customer who feels cornered says no. A customer with three doors picks one.

Get written approval before the crew resumes. A photo of a signed line item, an e-signature link, or a reply that says go ahead all work, as long as it is in writing and attached to the job record.

Then update the schedule. Half the real cost of a change order is the time it steals from the next appointment. If today slips, the next customer should hear it from you before they notice it themselves.

What to automate, and what stays your call

Automate the paperwork. The change-order template, the per-unit price list, the signature link, attaching the photos to the job record, and the message to the next customer that your window moved — all of it is mechanical, and all of it degrades when a technician does it by hand from a truck. The document should generate in under a minute from a price list you set once.

Automate the chasing. A change approved verbally and never signed is the one that turns into an invoice dispute six weeks later. A rule that flags any job carrying unsigned changes before it can be marked complete costs nothing and prevents the argument entirely.

Automate the reporting. Track change orders by job type, average value, approval rate, and how often they trace back to your own scoping errors. That last number is a management report rather than a sales one. If a meaningful share of your change orders come from bad measurements, the fix belongs in the estimating process, not in the on-site script.

What stays human is the part that decides the outcome: which of the three buckets this change belongs in, the conversation itself, and any decision to waive the charge. Those depend on the customer’s history with you, the size of the relationship, and what you could see on their face. No system knows that this customer paid without complaint two winters ago, or that this one is going to write a review either way. Automate the form and the follow-through. Keep the judgement, and the phone call, with a person.