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Trade Stacking Cost Calculator
Stacked trades lose productivity 15-30%. This calculator quantifies the cost.
Stacking cost
$43,200
Productivity loss %
24.00%
Cost per stacking hour
$216
How the math works
Cost = labor value × productivity loss %. Loss scales with overlapping trades.
Two trades: 12% productivity loss. Three: 24%. Four+: 36%+. Each adds inefficiency; the math justifies scheduling discipline over acceleration.
How to Use
- Enter trade labor value in stacked area.
- Enter number of overlapping trades.
- Enter hours of concurrent stacking.
- Read stacking cost.
Frequently Asked Questions
Stacking definition?
2+ trades working simultaneously in the same physical area. Typical: drywall + MEP. Extreme: 4+ trades in same 500 sf. Productivity drops 15-40% depending on stack density.
When unavoidable?
Acceleration recovery from behind-schedule positions. Tight site logistics. Fixed handoff dates from owner. Stacking is often the cheapest recovery path vs. full overtime or extended schedule.
Scheduling discipline?
Weekly trade sequence reviews. Define exclusive-use time windows in schedule. Pull-planning meetings with all foremen. Clear sequencing reduces stacking 50-70%.
How often should I rerun this?
Rerun this calculator whenever inputs change materially — new rent roll data, rate moves, loan balance updates, or quarterly operating data. For active deals, monthly refresh is typical. For stabilized assets under monitoring, quarterly is fine. Treat the output as a decision tool, not a one-time answer — market conditions evolve and so should your analysis.
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