If you bid work based on what the client tells you they need, you have almost certainly been caught by this one. The job looked clear. The client said they needed items one, two, and three, you priced one, two, and three, and everyone signed off. Then the work starts, and doing those three things correctly turns out to require three more that nobody mentioned.
How it plays out on a job
- Work begins and the real scope turns out to be larger than the bid.
- You are explaining a change order for something you could not have priced.
- The client feels blindsided and believes you should have caught it.
- Equipment already ordered turns out to be wrong for the application.
- The schedule slips waiting on a replacement with a long lead time.
Why the late discovery is the expensive part
None of this was in the scope, none of it was in the price, and now it is on you to explain. By the time the gap surfaces, money and schedule are already spent, so every remaining option is an expensive one. Specialty electrical gear can carry lead times of six months to more than a year, which means a wrong order is not a swap. It is a stalled job and a hard conversation about who pays. A decision made to save a few days at the start becomes the most expensive part of the project.
The step that was skipped
The job got priced before anyone confirmed what the job actually was.
The client described what they believed the problem was. That was a fair guess, and it was frequently a symptom rather than a root cause. Nobody was wrong on purpose. The information simply was not available yet, and the number went out anyway.
Without a step that checks the real scope before the price is committed, the gap between the assumed job and the actual job stays hidden until it is expensive. It repeats from one job to the next because skipping it never hurts right away. The scope nobody priced does not disappear. It waits for the point in the project where it costs the most to deal with.
What would have caught it
There is a defined phase that exists specifically to make the real scope visible before anyone spends money against a guess. It costs a small fraction of the project, and it is the line item contractors cut most often.