A written scope and an itemised price
For anyone with drawings, a unit number or a space we can look at.
A written scope stating what is included, what is excluded and what we could not establish without opening something up, plus a price with a quantity, a rate and a total against every line. You can put it next to any other contractor's price and compare them item by item, which is the point of producing it that way.
Turnaround: three working days from the site visit.
