Word Choice

Attached is the documentation regarding what plans are needed for the permit.

This is quite a cut, and may be too severe. I'm assuming the recipient knows all about it.

Without knowing more about what the scope of work is, it's the best I can come up with.

Thank you!

Happy to help.

It's always nice when someone aays Thank You.

“Scope of work” is not the same as plans, which would need a permit.

Do you mean to say:

Attached is our proposed scope of work according to the plans, which would need a permit.