An office move is a logistics project with a fixed end date. The old lease ends, the new space opens, and the business needs to be working on Monday. Planning backwards from that date is what makes it work: when packing starts, when the trucks load, when the building on each end is booked, and when set-up finishes.
Buildings set the schedule as much as the movers do. Freight elevators are booked in time slots, loading docks have their own hours, and most landlords need a certificate of insurance with specific wording before anyone is allowed in. Getting these from both property managers a week ahead avoids a truck waiting on the street.
An inventory is the starting point. Desks, chairs, filing cabinets, boardroom tables, IT equipment and anything that is being thrown out or donated. A good inventory decides the truck size, the crew size and whether storage is needed between dates.
Moves between cities add transit time and sometimes storage. A Toronto office moving to Montreal, for example, needs the load out, a day on the road and the load in to line up with two buildings' schedules. We plan the whole sequence as one booking, with one contact who knows where everything is.