Booking lead time is the time between a customer asking for service and the first appointment you can honestly offer them, usually measured in days. It tells you how far out your board is booked, as the customer sees it.
The formula
Booking lead time = Date of first offered slot − Date of request
Average it over a week or a month, and split it by service type and area. A company-wide average hides the zone that is booked two weeks out while another sits half empty.
Example: in one week, 120 customers request a tune-up. The first offered slot is the same day for 10, one day out for 30, two days out for 50 and four days out for 30. Average lead time is (10 × 0 + 30 × 1 + 50 × 2 + 30 × 4) ÷ 120 = 250 ÷ 120, or about 2.1 days.
Offered vs booked lead time
Two related numbers are easy to mix up:
- Offered lead time: how soon the first available slot is. This measures your capacity.
- Booked lead time: how far out the appointment the customer actually chose is. This mixes capacity with customer preference.
A customer who books next Tuesday because that is their day off tells you nothing about capacity. Track offered lead time for capacity decisions.
Why it matters
Lead time moves before most other numbers. When demand rises faster than capacity, the first open slot drifts further out days or weeks before utilization or revenue show anything. That makes it a useful trigger for capacity planning: add hours, shift techs between areas or bring in partner crews when lead time crosses a threshold you set.
It also costs bookings. A caller offered a slot four days out may call the next company on the list. If you sell same-day service, lead time on that service should be close to zero, and any drift means the reserved capacity is being eaten by other work.
The "reachable" part
Lead time is only honest if the offered slot is one a tech can actually reach. A board that offers an empty block across town looks like a short lead time and turns into a late arrival or a reschedule. CrewLink offers only start times a qualified tech can make, counting their other jobs and the drive at that hour, so the first offered time is a reachable one.
The capacity planning guide shows how to turn lead time and other signals into a staffing decision.
What to take away
- Booking lead time = first offered slot − request date, averaged by service and area.
- Track offered lead time for capacity; booked lead time includes customer preference.
- Rising lead time is an early sign that demand is outrunning capacity.
Common questions
What is a good booking lead time for field service?
It depends on the service. Emergency and same-day work should be near zero; maintenance work can run several days out without losing customers. Set a target per service and watch for drift.
How is booking lead time different from response time?
Booking lead time is how soon you can offer an appointment. Response time is usually how long it takes to reply to the request or to arrive after it. They are related but measured from different events.
How do I reduce booking lead time?
Add capacity where lead time is longest, move techs between areas, reduce wasted drive so each tech fits more jobs, or send overflow to partner crews.