My project plans look slightly different.

For example, I have one phase of construction and it’s called “Shed? [Y/N]”

While I may not have 3D models, I feel I can convey the same ideas through scattered sheets of paper with eraser rips and lashing out at others.
If you require access to the reference materials, the majority have fallen behind the workbench so we’re both fucked.

Cost is three times whatever estimate I give.
Project duration is calculated using a similar nuanced algorithm.