Construction Products, Windows, Doors & Fenestration worked example

Door Assembly Cost at 72% door assembly cost scope included: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop door assembly cost scope included to 72%, then walk the calculation through step by step. Estimate assembled door cost from door count, slab/frame/hardware cost, scope, and fixed job adders.

The inputs for this scenario

  • Door assemblies in the order: 85 doors (held at the documented default)
  • Fully burdened cost per door assembly: 520 $ / door (held at the documented default)
  • Door assembly cost scope included: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed door setup, prep, and freight adder: 3,100 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable door assembly cost = door assemblies in the order × fully burdened cost per door assembly × door assembly cost scope included.
  • total door assembly cost works out to 34,924 $ at these inputs, and this is the headline figure for the scenario.
  • cost per door assembly works out to 411 $ / piece at these inputs.
  • variable door assembly cost works out to 31,824 $ at these inputs.
  • fixed door setup, prep, and freight adder works out to 3,100 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where door assembly cost scope included sits at 100% and the headline result is 47,300 $, this scenario comes in 26.16% below the baseline at 34,924 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to door assembly cost scope included, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. Accuracy depends entirely on the burdened per-door cost you supply; if that figure misses glass, hardware, or finishing labor, the total will understate true cost.

Results at a glance

  • total door assembly cost: 34,924 $ (headline result)
  • cost per door assembly: 411 $ / piece
  • variable door assembly cost: 31,824 $
  • fixed door setup, prep, and freight adder: 3,100 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Door Assembly Cost calculator, set door assembly cost scope included to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.