What an annual contract actually buys
An AMC is not a discount on call-outs. What it buys is a schedule somebody else keeps, and a record that the property was managed rather than reacted to. The visits are booked in advance against the calendar rather than against a problem, so the tank clean happens before anyone notices the water, and the pest round happens before an infestation, which is both cheaper and less disruptive than the alternative.
The second thing it buys is a single point of accountability. A building running three suppliers has three schedules, three report formats and three people to chase, and the gap between them is where things get missed. One contract across cleaning, maintenance and pest control means one schedule, one HSE file and one report format, and nobody at your end assembling a compliance picture the night before an inspection.

