Estimates are the quotes you have out: who they went to, what they are worth, and which ones became work.
Why this is the number to watch first
Revenue tells you about last month. Estimates tell you about next month, and they are the earliest number in the business that does.
A quiet week in the estimate list shows up in the bank account six weeks later. By the time it does, the opportunity to react to it has passed.
Three things to read
Total value outstanding. What is in play. Judge it against a normal month's revenue rather than in the abstract.
Age. A quote that has not moved in several weeks is usually a no that nobody has said out loud. Treating it as still live keeps the pipeline flattering and the follow-up misdirected.
How many became jobs. This is close rate, and it is the number that separates "not enough people asking" from "not enough saying yes" — two problems that feel identical and have opposite fixes.
The follow-up gap
Quotes are lost to silence far more often than to a competitor's price. The customer got busy, the quote moved down the pile, and eventually somebody else called them.
A quote followed up within a few days closes materially more often than the same quote followed up in three weeks. This is the cheapest improvement available to most service businesses, and it requires no change to pricing, marketing or staffing.
Where they come from
Estimates sync from your field service system, so this is the same list your team is working from. Creating and sending quotes happens there; this is where you see them against the money.