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Made 4 Tradies

#46 most asked· Invoicing, payments & cash collection

Approve the extra on site, before the tools come back out

The tech adds a scope item, the customer e-signs on the spot, and the variation auto-merges into the final invoice.

By Daniel Hall · Automation builder at Made 4 Tradies

Most disputes about extras start the same way: a tech finds something mid-job, mentions it verbally, does the work, then adds it to the invoice weeks later. By then the customer has forgotten the conversation and the margin turns into an argument. This automation closes that gap on site. When the tech finds extra scope, they add it as a line item on their phone, attach a photo, and hand the device to the customer to e-sign. The signed variation is stamped with a time and stored against the job, then auto-merges onto the final invoice as its own clearly-labelled line. Nobody has to remember the conversation, because the customer agreed and signed before the work was done. The example here is a switchboard upgrade in Cessnock where the tech finds a corroded sub-main: $640 added, photo attached, signature captured, and it lands on the $3,120 final invoice as a tracked variation. The dollar figures shown are one illustrative job, not a benchmark.

See it in action

The flow, end to end

What the customer signs on site

Phone mockup showing messages from Variation approval

Job #1182 · Cessnock

Switchboard upgrade — M. Petrović

14 Vintage Dr, NSW 2325

Added on site

Replace corroded sub-main

Found during upgrade — existing 16mm cable failed insulation test. Supply & install 25mm + labour.

$640
Photo of corroded cable attached

Customer signature

M. Petrović
Approve & sign — $640

Approved 2:14 PM · copy emailed to both parties

Final invoice — auto-merged

Switchboard upgrade (quoted)$2,480
VariationSub-main replacement$640
Total$3,120

The signed extra lands on the final invoice as its own line, with the on-site photo and signature stored against it.

Why it matters

Disputed extras eat margin and trust.

On-site approval makes the change-order non-negotiable: the customer agreed, signed, and has the photo — before the work was done.

Less paper to chase

One r/Construction owner says he spends “half my day just chasing paper” — copy-pasted RAMS, loose sign-offs. This keeps the approval on the record instead.

How it works

Trigger → actions → outcome

  1. 1

    Trigger

    The tech finds extra scope mid-job and opens the variation on their phone rather than making a mental note for later.

  2. 2

    Action 1

    They add the extra as a line item with a price and snap a photo of the issue as evidence (the corroded sub-main here).

  3. 3

    Action 2

    The customer reviews the line item and photo on the device and e-signs to approve it on the spot.

  4. 4

    Action 3

    A time-stamped copy of the signed variation is emailed to both parties and stored against the job record.

  5. 5

    Outcome

    The approved extra auto-merges onto the final invoice as its own labelled line, so the customer has already agreed before they ever see the total.

What this means for your business

The numbers behind it

$640

Extra captured on site

Illustrative — one job in this example, not a benchmark

Signed

Before the work was done

Photo plus signature stored against the job

"Half my day"

Spent chasing paper

Reported by one r/Construction owner on Reddit

Questions

Common questions

What does the "On-site variation / change-order with e-sign" automation do?
The tech adds an extra scope item on site, the customer e-signs, and the variation auto-merges into the final invoice.
Why would a tradie business want this?
Disputed extras eat margin and trust. On-site approval workflows are non-negotiable.

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