Construction Products, Windows, Doors & Fenestration worked example

Door Assembly Cost at 110% door assembly cost scope included: a worked example

What does the result look like when door assembly cost scope included reaches 110%? The full calculation is worked below with real intermediate numbers. quoting entry doors, patio doors, service doors, or project door packages

The inputs for this scenario

  • Door assemblies in the order: 85 doors (unchanged)
  • Fully burdened cost per door assembly: 520 $ / door (unchanged)
  • Door assembly cost scope included: 110 % (raised for this scenario; the documented default is 100)
  • Fixed door setup, prep, and freight adder: 3,100 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable door assembly cost = door assemblies in the order × fully burdened cost per door assembly × door assembly cost scope included) to the inputs above produces each figure below.
  • At this operating point the engine returns 51,720 $ for total door assembly cost, the number this scenario is built around.
  • At this operating point the engine returns 608 $ / piece for cost per door assembly.
  • At this operating point the engine returns 48,620 $ for variable door assembly cost.
  • At this operating point the engine returns 3,100 $ for fixed door setup, prep, and freight adder.

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 9.34% above the baseline at 51,720 $.
  • A figure at this level is achievable when door assembly cost scope included is genuinely sustained, not just peaked for a shift. 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: 51,720 $ (headline result)
  • cost per door assembly: 608 $ / piece
  • variable door assembly cost: 48,620 $
  • fixed door setup, prep, and freight adder: 3,100 $

Run it with your numbers

  • Every input above is editable in the live Door Assembly Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.