Build an interface list
Identify where one party’s work prepares the way for another. Examples include mitigation records before enclosure, utility work before equipment installation, and substrate preparation before finishes. State who supplies information, who performs the work, and who accepts readiness at each interface.
Schedule by area and dependency
Use one coordinated schedule showing access, design answers, deliveries, inspections, and work by owner vendors. Confirm prerequisite tasks before bringing the next trade to site. A calendar full of names is not a sequence if the conditions needed for each task remain unresolved.
Control field instructions
Name the party responsible for overall coordination and the owner representative authorized to approve changes. Use current drawings and scope versions. When a conflict appears, record the issue, affected work, options, and decision needed rather than allowing separate vendors to solve it inconsistently.
Close the interfaces as well as the tasks
At turnover, confirm connections, testing responsibilities, protection removal, and records by each vendor. Identify gaps that remain with the owner or another contractor. A joint review of an operating area is more useful than assuming several individual completion notices add up to a ready space.