Pool closing

• The date, with an eye on the first frostToo early grows algae, too late risks the freeze
• What equipment has to be drainedPump, filter, heater, any cleaner
• The cover you have and its conditionA safety cover, a solid cover with a pump, or a tarp
• Whether anything needs fixing firstCheaper now than discovered under a cover in April

General guidance, not advice on your own situation. The person you hire decides what applies to it.