5 min read · Updated 2026
Delay is rarely caused by trades working slowly. It is caused by decisions, approvals and materials arriving later than the plan assumed. Nearly all of it is foreseeable.
Permitting and plan review
Incomplete submissions and comment cycles push dates. Countermeasure: identify jurisdiction requirements early, submit complete packages, and track review as a scheduled activity with a named owner.
Long-lead materials and equipment
Switchgear, rooftop units, generators, custom glazing and specialty equipment can outrun the construction schedule. Countermeasure: identify long-lead items in preconstruction and release procurement early, even before permit where risk allows.
Owner decisions
Finish selections, equipment confirmations and layout approvals sit in queues. Countermeasure: put decision deadlines on the schedule with the same weight as trade activities.
Existing conditions
Record drawings do not match reality in most older buildings. Countermeasure: field verification and selective investigative demolition before pricing, plus documented allowances for what remains unknown.
Utility coordination
Service upgrades and new connections depend on third-party timelines that no contractor controls. Countermeasure: open those applications at the earliest possible date and track them weekly.
Changes during construction
Every change consumes pricing time, approval time and often re-sequencing. Countermeasure: resolve scope during design, and require written cost and schedule impact with every change before approval.
Coordination and trade stacking
Too many trades in one area destroys productivity. Countermeasure: realistic sequencing, weekly look-aheads and active superintendent management of the work face.
Inspections
Failed or unscheduled inspections stall rough-in and closeout. Countermeasure: pre-inspection walks and scheduling inspections against realistic readiness dates.