Stage and event builders: how to bill every last-minute change

Every stage builder and event electrician knows the call: “Small change — can the stage be two metres wider?” or “We added three food trucks, can you power them?”. The change is made, the show goes on, and two weeks later nobody remembers it when the invoice is sent.

Extra work that is not captured is pure margin lost. Here is how to make every change billable without slowing anyone down.

1. Agree on how changes work before the job

Put a short line in your quote: changes after approval are quoted separately and need written approval. It sets expectations and makes the conversation easier when the change comes.

2. Never approve a change by phone only

A phone call is fine for speed, but follow it with a written change: what changes, what it costs, and when it needs to be ready. The client confirms in writing — ideally with one click.

3. Keep one version of the truth

Drawings, stage plots and power plans change many times. Keep the current version in one place your crew and the client both use, so nobody builds from an old PDF.

4. Quote the change straight away

The best moment to price a change is when it is requested, while the client still feels the urgency. If quoting takes a day, the work often starts before the price is agreed.

5. Invoice from the job, not from memory

When every accepted change is attached to the job, the final invoice is a sum of what was agreed — not a reconstruction from WhatsApp messages.

How Porta helps

Porta gives every event its own client page with the quote, drawings or power plan to approve, and every change request. Changes become extra quote lines the client accepts with one click, and everything stays attached to the job. Read more for stage and event builders or event electrical contractors.