Off-site construction can overlap with site work, but overlap creates value only when the design, approvals, foundation, utilities, access, and factory release remain synchronized. A dependable timeline is a network of accepted prerequisites rather than an optimistic list of dates.
Decision snapshot
| Decision | Practical approach | Watch for |
|---|---|---|
| Definition | What decision freezes the next scope? | Accepted document or written approval |
| Production | What must be approved before factory work proceeds? | Release package and change cutoff |
| Site | What must be verified before delivery, set, and occupancy? | Inspection and readiness evidence |
h
Start with milestones and acceptance evidence
h
Map design and approval dependencies
h
Coordinate factory and field work
h
Model the set-to-occupancy tail
h
Update by exception, not optimism
Action checklist
- Milestone acceptance definitions
- Design and selection deadlines
- Approval and inspection lead times
- Factory/site interface hold points
- Delivery and set prerequisites
- Closeout and occupancy path
Working worksheet
Record these fields in the same working document so the decision can be reviewed and handed off:
- Milestone
- Required predecessors
- Owner
- Acceptance evidence
- Forecast and recovery action
Common failure patterns
- Copying a supplier’s generic timeline into the contract plan
- Scheduling delivery from factory progress alone
- Ignoring post-set trade and inspection work